SC901 ST instructions for use
Instructions for Use · Original Instructions
Form no. 56091217 · 3/2019 revised 4/2019 REV B
Sections: A-English, B-Español, C-Français
Advance models:
- 56115530 (SC901 ST-28D)
- 56115531 (SC901 ST-34D)
- 56115532 (SC901 ST-32C)
Table of contents
- Introduction (A-3)
- Parts and service (A-3)
- Nameplate (A-3)
- Unpacking the machine (A-3)
- Cautions and warnings (A-4)
- Know your machine (A-6 – A-7)
- Control panel (A-8)
- Control panel – EcoFlex™ (A-8)
- Preparing the machine for use
- Batteries (A-9 – A-10)
- Installing the brushes (A-11 – A-12)
- Filling the solution tank (A-13)
- Squeegee installation (A-13)
- Detergent system (EcoFlex™) (A-14 – A-15)
- Operating the machine
- Wet scrubbing (A-16 – A-17)
- After using the machine (A-18)
- Maintenance schedule (A-19)
- Servicing the vacuum motor (A-19)
- Lubricating the machine (A-19)
- Maintenance
- Charging the batteries (wet) (A-20)
- Charging the batteries (gel) (A-20)
- Servicing the squeegee (A-21)
- Adjusting the squeegee (A-21)
- Troubleshooting (A-22)
- Technical specifications (A-23)
- Material composition (A-24)
Introduction
This manual will help you get the most from your Advance™ automatic scrubber/dryer. Read it thoroughly before operating the machine.
Note: Bold numbers in parentheses indicate an item illustrated on pages A-6 – A-8 unless otherwise noted.
This product is intended for commercial use only.
Parts and service
Repairs, when required, should be performed by your Authorized Advance Service Center, who employs factory trained service personnel, and maintains an inventory of Advance original replacement parts and accessories.
Call Advance for repair parts or service. Please specify the Model and Serial Number when discussing your machine.
Modifications
Modifications and additions to the cleaning machine which affect capacity and safe operation shall not be performed by the customer or user without prior written approval from Nilfisk Inc. Unapproved modifications will void the machine warranty and make the customer liable for any resulting accidents.
Nameplate
The Model Number (also known as Part Number) and Serial Number of your machine are shown on the Nameplate in the battery compartment. This information is needed when ordering repair parts for the machine. Use the space below to note the Part Number and Serial Number of your machine for future reference.
PART NO. ______________________________________
SERIAL NO. ____________________________________
Unpacking the machine
When the machine is delivered, carefully inspect the shipping packaging and the machine for damage. If damage is evident, save the shipping carton (if applicable) so that it can be inspected. Contact the Advance Customer Service Department immediately to file a freight damage claim. Refer to the unpacking instruction sheet included with the machine to remove the machine from the pallet.
Regulatory
FCC: This device complies with part 15 of the FCC rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
Users are not permitted to make changes or modify the device in any way. Changes or modifications not expressly approved by Nilfisk, Inc. will void the user’s authority to operate the equipment.
IC: This device complies with Industry Canada ICES-002. Operation is subject to the following two conditions: (1) This device may not cause harmful interference and (2) This device must accept any interference received, including interference that may cause undesired operation of the device.
Cautions and warnings
Symbols
Advance uses the symbols below to signal potentially dangerous conditions. Read this information carefully and take the necessary steps to protect personnel and property.
- DANGER! Is used to warn of immediate hazards that will cause severe personal injury or death.
- WARNING! Is used to call attention to a situation that could cause severe personal injury.
- CAUTION! Is used to call attention to a situation that could cause minor personal injury or damage to the machine or other property.
Read all instructions before using.
Batteries and chargers: make sure your charger is compatible with your batteries, and set its charging algorithm to your battery pack before you use it.
General safety instructions
Specific Cautions and Warnings are included to warn you of potential danger of machine damage or bodily harm.
This machine is for commercial use, for example in hotels, schools, hospitals, factories, shops and offices other than normal residential housekeeping purposes.
- This machine should only be used by properly trained and authorized persons.
- This machine is not intended for use by persons (including children) with reduced physical, sensory or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the machine by a person responsible for their safety.
- Children should be supervised to ensure that they do not play with the machine.
- Close attention is necessary when used near children.
- While on ramps or inclines, avoid sudden stops. Avoid abrupt sharp turns. Use low speed down ramps.
- Keep sparks, flame and smoking materials away from batteries. Explosive gases are vented during normal operation.
- Charging the batteries produces highly explosive hydrogen gas. Charge batteries only in well-ventilated areas, away from open flame. Do not smoke while charging the batteries.
- Remove all jewelry when working near electrical components.
- Turn the key switch off (O) and disconnect the batteries before servicing electrical components.
- Never work under a machine without safety blocks or stands to support the machine.
- Do not dispense flammable cleaning agents, operate the machine on or near these agents, or operate in areas where flammable liquids exist.
- Do not clean this machine with a pressure washer.
- Only use the brushes provided with the appliance or those specified in the instruction manual. The use of other brushes may impair safety.
- Observe the Gross Vehicle Weight, GVW, of the machine when loading, driving, lifting or supporting the machine.
Cautions and warnings – continued
- This machine is not approved for use on public paths or roads.
- This machine is not suitable for picking up hazardous dust.
- Use care when using scarifier discs and grinding stones. Advance will not be held responsible for any damage to floor surfaces caused by scarifiers or grinding stones.
- When operating this machine, ensure that third parties, particularly children, are not endangered.
- Before performing any service function, carefully read all instructions pertaining to that function.
- Do not leave the machine unattended without first turning the key switch off (O), removing the key and securing the machine.
- Turn the key switch off (O) and remove the key, before changing the brushes, and before opening any access panels.
- Take precautions to prevent hair, jewelry, or loose clothing from becoming caught in moving parts.
- Use caution when moving this machine in below freezing temperature conditions. Any water in the solution, recovery or detergent tanks or in the hose lines could freeze, causing damage to valves and fittings. Flush with windshield washer fluid.
- The batteries must be removed from the machine before the machine is scrapped. The disposal of the batteries should be safely done in accordance with your local environmental regulations.
- Do not use on surfaces having a gradient exceeding that marked on the machine.
- All doors and covers are to be positioned as indicated in the instruction manual before using the machine.
- Refer to the battery charger OEM product manual for additional specific battery charger warnings.
SAVE THESE INSTRUCTIONS
Know your machine
As you read this manual, you will occasionally run across a bold number or letter in parentheses - example: (2). These numbers refer to an item shown on these pages unless otherwise noted. Refer back to these pages whenever necessary to pinpoint the location of an item mentioned in the text.
NOTE: Refer to the service manual for detailed explanations of each item illustrated on the next 3 pages.
- 1 Solution Tank Fill
- 2 Operator Control Handle
- 3 Bottle Holder / Squeegee hanger location
- 4 Vacuum Motor Shutoff Float
- 5 Debris Tray
- 6 Recovery Tank Lid
- 7 Recovery Tank (Detergent Cartridge Access Cover)
- 7a Detergent Cartridge (EcoFlex models only)
- 7b Detergent Module (EcoFlex models only)
- 8 Scrub Deck (Disc models)
- 9 Brush Housings (include Bristle Skirt)
- 10 Scrub Deck Bumper Wheel
- 11 Drive Wheel
- 12 Squeegee Assembly
- 13 Solution Filter
- 14 Solution Shut-off Valve
- 15 Battery Pack Connector
- 16 Brush Motor Circuit Breakers (30 Amp)
- 17 Vacuum Fan Circuit Breaker (20 Amp)
- 18 Wheel Drive Circuit Breaker (30 Amp)
- 19 Key Switch Circuit Breaker (2.5 Amp)
Know your machine
- 2 Operator Control Handle
- 20 Solution Manifold (Cylindrical Models Only)
- 21 Idler Assembly (Cylindrical Models Only)
- 22 Debris Hopper (Cylindrical Models Only)
- 23 Forward / Reverse Drive Paddle
- 24 Onboard Battery Charger (Not found on all models)
- 25 Solution Control
- 26 Speed Limit Control Knob
- 27 Battery Hour Gauge
- 28 Water proof Key Switch
- 29 Recovery Tank Drain Hose
- 30 Squeegee Raise / Lower Lever
- 31 Solution Drain Hose / Level Indicator
- 32 Scrub Deck Raise / Lower Lever
- 33 Squeegee Mount Thumb Nut
- 34 Recovery Hose
- 35 Squeegee Blade Tension Strap
- 36 Squeegee Blade Alignment Pins
- 37 Squeegee Blade Latch
Control panel
- A Key Switch (Main Power)
- B Speed Control Knob
- C Forward / Reverse Drive Paddle
- D Operator Control Handle
- E Solution Control (ST Models)
- F Battery / Hour Gauge
The non-resettable Hour Gauge displays the running total of hours accumulated on the scrub motors up to 99,999 hours. The hour glass symbol flashes on/off to indicate time counting.
Control panel – EcoFlex™
- G Detergent Module (EcoFlex models only)
- H Solution Flow Control Knob (EcoFlex models only)
- J Detergent System Control Knob (EcoFlex models only)
- K Burst of Power Switch (EcoFlex models only)
- L Burst of Power Switch LED (EcoFlex models only)
Batteries
If your machine shipped with batteries installed do the following:
- Check that the batteries are connected to the machine (15).
- Turn ON the Key Switch (A) and check the Battery / Hour Gauge (F). Battery Charge capacity is indicated using a 10 segment LED bar graph display from full (right LED segment lit) to empty (left LED segment lit). LED Flash Alert™ flashes the 2nd LED from the left as a warning that the battery has discharged 70%.
- At 80% discharge, LED Flash Alert™ alternately flashes the left 2 LEDs to indicate very low capacity is remaining. At this level the scrub systems are disabled to protect the battery. The vacuum system will continue to operate to allow recovery of any solution remaining on floor.
IMPORTANT!: BATTERIES SHOULD BE FULLY CHARGED BEFORE EACH USE. SEE THE “CHARGING THE BATTERIES” SECTION.
IMPORTANT!: IF YOUR MACHINE HAS AN ONBOARD BATTERY CHARGER REFER TO THE OEM PRODUCT MANUAL FOR INSTRUCTIONS REGARDING SETTING THE CHARGER FOR BATTERY TYPE.
Batteries and chargers: make sure your charger is compatible with your batteries, and set its charging algorithm to your battery pack before you use it.
If your machine shipped without batteries installed do the following:
- Consult your Authorized Advance dealer for recommended batteries.
- Install the batteries by following the instructions below.
- DO NOT install three 12 volt batteries in your machine. This affects the stability of the machine.
IMPORTANT!: IF YOUR MACHINE HAS AN ONBOARD BATTERY CHARGER REFER TO THE OEM PRODUCT MANUAL FOR INSTRUCTIONS REGARDING SETTING THE CHARGER FOR BATTERY TYPE.
When servicing batteries...
- Remove all jewelry
- Do not smoke
- Wear safety glasses, rubber gloves and a rubber apron
- Work in a well-ventilated area
- Do not allow tools to touch more than one battery terminal at a time
- ALWAYS disconnect the negative (ground) cable first when replacing batteries to prevent sparks.
- ALWAYS connect the negative cable last when installing batteries.
When changing batteries or the charger, please contact your local authorized service center for correct battery, charger and machine settings to prevent battery damage.
Batteries (continued)
- Remove the batteries from their shipping crate and carefully inspect them for cracks or other damage. If damage is evident, contact the carrier that delivered them or the battery manufacturer to file a damage claim.
- Turn the Master Key Switch (A) OFF and remove the key.
- Tip the recovery tank to the side, locked position. Remove the battery cables from inside the battery compartment.
- Your machine comes from the factory with enough battery cables to install six 6 volt batteries. Carefully lift the batteries into the battery compartment and arrange them exactly as shown in Figure 1. Secure the batteries as close to the back of the machine as possible.
NOTE: Battery spacers (O) need to be installed between the bottom of the batteries and the short wall on the bottom of the tank to create more space between the batteries and prevent the Deck Lever Arm (P) from hitting the batteries.
- Install the battery cables as shown. Position the cables so the battery caps can be easily removed for battery service. To prevent interference, route the cable (Q) over the top of the Deck Lever Arm (P) as shown in Figure 1.
IMPORTANT!: The protective caps supplied with the batteries need to be left on or re-used to completely cover the portion of the battery terminals that are not being protected by the battery cable terminal cover boots supplied with the battery cables. This also applies to the inline fuse holder boot.
- Carefully tighten the nut in each battery terminal until the terminal will not turn. Do not over-tighten the terminals, or they will be very difficult to remove for future service.
- Coat the terminals with spray-on battery terminal coating (available at most auto parts stores).
- Put one of the rubber terminal cover boots over each of the terminals and connect the Battery Pack Connector (15).
- Make sure the Fuse Holder Boot (R) is covering the fuse holder, the cable end of the Battery Pack Connector (15), and as much of the battery terminal as possible. Leave the protective caps supplied with the batteries in place or re-use to cover the terminal areas not protected by the terminal cover boots.
Figure 1 is labeled 310AH @ 20HR RATE and shows six 6V batteries in two rows of three, with a battery spacer between the rows.
Installing the brushes (disc system)
- Make sure the Scrub Deck (8) is in the RAISED position. Make sure the Key Switch (A) is off (O).
- If using pads, install the pads on the pad holders.
- See Figure 2. To mount the Brushes (AA) (or pad holders) align the Lugs (BB) on the brush with the holes on the mounting plate and turn to lock in place (turn the outside edge of brush towards the rear of machine as shown (CC)). NOTE: During operation the brushes should rotate in direction (DD).
Install the brushes (cylindrical system)
- Make sure the Brush Deck is in the RAISED position. Make sure the Key Switch (A) is off (O).
- See Figure 3. To access the brushes loosen the black knobs (one on each side) on top of the idler assemblies (21) and remove the idler assemblies. Slide the brush into the housing, lift slightly, push and turn until it seats. Re-install the idler assemblies.
Filling the solution tank
Fill the solution tank with a maximum of 30 gallons (113.5 Liters) of cleaning solution. Do not fill the solution tank above 3 inches (7.5 cm) from the bottom of the Solution Fill (1). The solution should be a mixture of water and the proper cleaning chemical for the job. Always follow the dilution instructions on the chemical container label. NOTE: EcoFlex machines can either be used conventionally with detergent mixed in the tank or the detergent dispensing system can be used.
Squeegee installation
- See Figure 4. Ensure the Squeegee Seal (39) is free from debris and installed in the Squeegee Mount Bracket (M).
- Slide the Squeegee Assembly (12) onto the Squeegee Mount Bracket (M) and tighten the Squeegee Mount Thumb Nuts (33).
IMPORTANT!: HAND TIGHTEN THE SQUEEGEE THUMB NUTS ONLY, DO NOT USE TOOLS.
- Connect the Recovery Hose (34) to the squeegee inlet.
- The Squeegee Mount Bracket (M) has a factory set position so that the rear squeegee blade touches the floor evenly across its entire width and is bent over slightly as shown.
NOTE: A service technician can adjust the Turnbuckle Assembly (N) to change the squeegee angle if needed.
Detergent system preparation and use (EcoFlex models only)
Common instructions
The system should be purged of previous detergent when switching to a different detergent. SERVICE NOTE: Move machine over floor drain before purging because a small amount of detergent will be dispensed in the process.
To purge weekly or when changing chemicals:
- Disconnect and remove the detergent cartridge. Install and connect a cartridge filled with clean water and transport machine to a floor drain.
- See Figure 5. Turn the Key Switch (A) ON. Turn the Speed Control Knob (B) to its lowest setting. Turn the Solution Knob (H), and Detergent Knob (J) to its maximum settings. Drop the scrub deck and press the Drive Paddle (C) forward for 1 minute to run water thru the EcoFlex system. Normally one purge cycle is adequate to purge the system.
- Use visual inspection of the Detergent Cartridge (7a) to determine when it is empty. You should be able to simply pour an entire 1 gallon (3.80 L) bottle of detergent into the Cartridge to refill without worrying about measuring.
Detergent ratio:
- See Figure 5. The solution flow rate is controlled by manually turning Solution Knob (H) which varies solution flow rate from 0 to 1 gallon (3.80 L) per minute (gpm).
- The Detergent Knob (J) varies detergent concentration from 400:1 to 32:1. Manually select the center position of the desired ratio that is color coded on the Detergent Module (G, 7b) and color coded with the settings listed on the chemical settings decal. Green=1/2 oz./gallon, Blue=1 oz./gallon, Yellow=2 oz./gallon, Red=3 oz./gallon. The detergent ratio is variable and you can run it leaner or richer from the center position of the desired ratio.
- Both knobs have small dead zones at both endpoints. The lower dead zone will turn that feature “off” (solution = 0 gpm, or detergent = 1:0). The upper dead zone will set that feature to max (solution = 1 gpm, or detergent = 32:1).
- The Burst of Power Switch (K) enables and disables the Burst of Power feature. Burst of Power will increase solution flow rate by 0.33 gpm (1.25 lpm), and double the concentration of detergent for 60 seconds. Pressing the Burst of Power Switch (K) while the feature is enabled will disable it.
- The Burst of Power Switch LED (L) will turn on when scrubbing. Normally the LED is continuous, but it will flash when the Burst of Power feature is “on”. This flashing will increase in speed for the last 10 seconds of Burst of Power’s 60 second timeout.
Cartridge specific instructions
Fill the detergent cartridge (7a) with a maximum of 1.25 gallons (4.73 L) of detergent. SERVICE NOTE: Remove the detergent cartridge from the machine prior to filling to avoid spilling detergent on the machine.
It is recommended that a separate cartridge be used for each detergent you plan to use. The detergent cartridges have a white decal on them so you can write the detergent name on each cartridge to avoid mixing them up. When installing a new cartridge, remove the Cap (AA) and place the cartridge in the detergent box. Install the Dry Break Cap (BB) as shown.
Detergent system preparation and use (EcoFlex models only)
The chemical settings decal reads:
| Quantity | % | Ratio | Color |
|---|---|---|---|
| 0.5 oz/gal | 0.4% | 1:256 | Green |
| 1 oz/gal | 0.8% | 1:128 | Blue |
| 2 oz/gal | 1.6% | 1:64 | Yellow |
| 3 oz/gal | 2.3% | 1:43 | Red |
The Burst of Power decal reads “1 Min.” with a plus sign beside the solution (faucet) symbol and a plus sign beside the detergent (flask) symbol.
Wet scrubbing
- Follow the instructions in the Preparing the Machine For Use section of this manual.
- Turn the Master Key Switch (A, 28) ON (I). This will display the control panel indicator lights; reference the Battery / Hour Gauge on the Display (F, 27).
- To transport the machine to the work area, start with your hands on the Operator Control Handle (D, 2). Push the Drive Paddle (C, 23) to go forward or pull the Drive Paddle (C, 23) backward to move the machine in reverse. Vary the pressure on the Drive Paddle (C, 23) to obtain the desired speed. NOTE: Speed Control Knob (B, 26) is used to control the maximum speed in either forward or reverse.
- Stop the machine by releasing the Drive Paddle (C, 23).
- Use Deck Lever (32) to lower deck, (machine is now ready to scrub when the machine begins to move). Use Deck Lever (32) to increase scrub pressure by locking lever into the medium or high position on the Deck Lever Support. SEE DETAIL 1. When using the high scrub position in aggressive applications brush motor overload may occur and the brush motor circuit breakers will trip, protecting the motor from damage. If this occurs frequently, avoid this high pressure setting or install the heavy duty scrub kit, P/N 56115458.
- Use Solution Control Lever (E) to regulate the amount of solution being dispensed. Solution will only dispense while scrubbing. EcoFlex models only: Use the Detergent Module (G, 7b) to regulate the amount of solution and detergent being dispensed.
- Lower the squeegee with the Squeegee Raise / Lower Lever (30). Vacuum motor will turn on when squeegee is lowered and turn off when raised.
- When the Drive Paddle (C, 23) is not being pressed or pulled and the machine is stationary the scrub, solution and detergent (EcoFlex models) systems will pause. Grip the Operator Control Handle (2) and press the Drive Paddle (C, 23) for forward direction or pull back on the Drive Paddle (C, 23) for reverse direction to resume scrubbing. For best results, move the machine at a slow walking speed.
- When scrubbing, check behind the machine occasionally to see that all of the waste water is being picked up. If there is water trailing the machine, you may be dispensing too much solution, the recovery tank may be full, or the squeegee tool may require adjustment.
- For extremely dirty floors, a one-pass scrubbing operation may not be satisfactory and a “double-scrub” operation may be required. This operation is the same as a one-pass scrubbing except on the first pass the squeegee is in the up position. This allows the cleaning solution to remain on the floor to work longer. The final pass is made over the same area, with the squeegee lowered to pick up the accumulated solution.
- The recovery tank has a shut-off float (4) that causes a change in pitch in the vac motor. When this float is activated, the recovery tank must be emptied. The machine will not pick up water with the float activated. NOTE: Empty the debris catch cage every time you drain the recovery tank.
- When the operator wants to stop scrubbing or the recovery tank is full;
- Raise the deck and lift the squeegee when all the water has been picked up.
- Drive the machine to a designated wastewater “DISPOSAL SITE” and empty the recovery tank. To empty, pull the Recovery Tank Drain Hose (29) from its hanger and open the cap (hold the end of the hose above the water level in the tank to avoid sudden, uncontrolled flow of waste water). The Recovery Tank Drain Hose (29) can be squeezed to regulate the flow. Refill the solution tank and continue scrubbing.
NOTE: Make sure the Recovery Tank Cover (6) and the Recovery Tank Drain Hose (29) cap is properly seated or the machine will not pick-up water correctly. When the batteries require recharging the Battery / Hour Gauge (F, 27) flashes the 2nd LED from the left as a warning that the battery has discharged 70%. At 80% discharge, the display alternately flashes the left 2 LEDs to indicate very low capacity is remaining. At this level the scrub systems are disabled to protect the battery. The vacuum system will continue to operate to allow recovery of any solution remaining on floor. Transport the machine to a service area and recharge the batteries according to the instructions in the Battery section of this manual.
SERVICE NOTE: Refer to the service manual for detailed functional descriptions of all controls.
Wet scrubbing
Detail 1, Deck Lever Support, shows the lever positions from top to bottom: High Position, Medium Position, Float Position, Raised Position.
After use
Batteries and chargers: make sure your charger is compatible with your batteries, and set its charging algorithm to your battery pack before you use it.
- Raise the brushes (or pads) and raise the squeegee. Move the machine to a service area.
- Turn the Master Key Switch (A) OFF and remove the key.
- To empty the solution tank, pull the Solution Drain Hose (31) off the upper connector. Direct the hose to a floor drain or bucket. Rinse the tank with clean water. Inspect the solution hoses; replace if kinked or damaged.
- To empty the recovery tank, remove the Recovery Tank Drain Hose (29) from its hanger and remove the cap (hold the end of the hose above the water level in the tank to avoid sudden, uncontrolled flow of waste water). The Recovery Tank Drain Hose (29) can be squeezed to regulate the flow. Rinse the recovery tank and shut-off float (4) with clean water. Inspect the recovery and vacuum hoses; replace if kinked or damaged.
- Remove the brushes or pad holders. Rinse the brushes or pads with warm water and hang up to dry. Allow buffing pads to dry completely before using again. NOTE: You need to remove the brushes manually for all SC901 models).
- Remove the squeegee, rinse it with warm water and hang it up to dry.
- See Figure 6. Use the Recovery Tank or Bottle Holder storage locations to hang the squeegee from.
- Check the maintenance schedule below and perform any required maintenance before storage.
- Store the machine indoors in a clean dry place. Keep from freezing. Leave the tanks open to air them out.
- Turn the Key Switch (A) OFF (O) and remove the key.
- Batteries are the most expensive replacement item on this machine. To protect your investment and to get as many cycles from the batteries as possible, remember the following:
- When installing batteries make certain the machine and charger is programed for the correct battery type.
- Batteries will last longer if they are kept fully charged.
- Batteries will prematurely fail if stored in a discharged state.
- Battery chargers will not over or undercharge the batteries.
- Every day after use, the battery charger must be plugged in and the charger must be allowed to run through a full charging sequence to fully charge the batteries. This may take 8-12 hours depending on the battery status.
- Always have the charger plugged into an AC outlet if the machine will not be used for a longer period of time to keep the battery(s) charged.
- There is no benefit to discharging to low levels. Do not skip charging because the batteries haven’t been fully discharged.
Maintenance schedule
Batteries and chargers: make sure your charger is compatible with your batteries, and set its charging algorithm to your battery pack before you use it.
| Maintenance item | Daily | Weekly | Monthly | Yearly |
|---|---|---|---|---|
| Charge Batteries | X | |||
| Check/Clean Tanks & Hoses | X | |||
| Check/Clean the Brushes/Pads | X | |||
| Check/Clean the Squeegee | X | |||
| Check/Clean Vacuum Shut-Off Float | X | |||
| Empty/Clean Debris Catch Tray in Recovery Tank | X | |||
| Check Each Battery Cell(s) Water Level | X | |||
| Inspect Scrub Housing Skirt | X | |||
| Inspect and clean Solution Filter | X | |||
| Purge Detergent System | X | |||
| Lubrication of Machine | X | |||
| * Check Carbon Brushes | X |
* Have an Authorized Advance Service Center check the vacuum motor carbon motor brushes once a year or after 300 operating hours. The brush and drive motor carbon brushes should be checked every 500 hours or once a year.
NOTE: Refer to the Service Manual for more detail on maintenance and service repairs.
Servicing the vacuum motor
Have your Advance Dealer check the carbon motor brushes once a year or after 300 operating hours.
Lubricating the machine
Once a month, apply light machine oil to lubricate the:
- General Pivot Points for the Squeegee Linkage (A).
- Squeegee Tool end wheels (B).
- Scrub deck bumper wheel (C).
- General Pivot Points for the Brush Linkage (D).
Once per quarter, Grease the following
- Rear Caster Wheel Swivels (E).
Charging wet batteries
Batteries and chargers: make sure your charger is compatible with your batteries, and set its charging algorithm to your battery pack before you use it.
Charge the batteries each time the machine is used or when the Battery Indicator / Hour Gauge (F) is reading less than full.
When servicing batteries...
- Remove all jewelry
- Do not smoke
- Wear safety glasses, rubber gloves and a rubber apron
- Work in a well-ventilated area
- Do not allow tools to touch more than one battery terminal at a time
- ALWAYS disconnect the negative (ground) cable first when replacing batteries to prevent sparks.
- ALWAYS connect the negative cable last when installing batteries.
If your machine shipped with an onboard battery charger do the following: Turn the Key Switch (A) OFF. Unwind the electrical cord from the side of the onboard charger and plug it into a properly grounded outlet. Refer to the OEM product manual for more detailed operating instructions.
If your machine shipped without an onboard battery charger do the following: Disconnect the batteries from the machine and make sure you plug the connector from the charger into the Battery Pack Connector (15). Follow the instructions on the battery charger.
Checking the battery water level
Check the water level of the batteries at least once a week.
After charging the batteries, remove the vent caps and check the water level in each battery cell. Use distilled or demineralized water in a battery filling dispenser (available at most auto parts stores) to fill each cell to the level indicator (or to 0.4 in (10 mm) over the top of the separators). DO NOT over-fill the batteries!
Tighten the vent caps. Wash the tops of the batteries with a solution of baking soda and water (2 tablespoons of baking soda to about 1 qt (1 L) of water).
Charging gel (VRLA) batteries
Charge the batteries each time the machine is used or when the Battery Indicator / Hour Gauge (F) is reading less than full.
When servicing batteries...
- Remove all jewelry
- Do not smoke
- Wear safety glasses, rubber gloves and a rubber apron
- Work in a well-ventilated area
- Do not allow tools to touch more than one battery terminal at a time
- ALWAYS disconnect the negative (ground) cable first when replacing batteries to prevent sparks.
- ALWAYS connect the negative cable last when installing batteries.
If your machine shipped with an onboard battery charger do the following: Turn the Key Switch (A) OFF. Unwind the electrical cord from the side of the onboard charger and plug it into a properly grounded outlet. Refer to the OEM product manual for more detailed operating instructions.
If your machine shipped without an onboard battery charger do the following: Disconnect the batteries from the machine and make sure you plug the connector from the charger into the Battery Pack Connector (15). Follow the instructions on the battery charger.
Servicing the squeegee
If the squeegee leaves narrow streaks or water, the blades may be dirty or damaged. Remove the squeegee, rinse it under warm water and inspect the blades. Reverse or replace the blades if they are cut, torn, wavy or worn.
To reverse or replace the rear squeegee wiping blade...
- See Figure 7. Raise the squeegee tool off the floor, and then unsnap the Rear Squeegee Blade Removal Latch (37) on the squeegee tool.
- Remove the Tension Strap (35).
- Slip the rear blade off the Alignment Pins (36).
- The squeegee blade has 4 working edges. Turn the blade so a clean, undamaged edge points toward the front of the machine. Replace the blade if all 4 edges are nicked, torn or worn to a large radius.
- Install the blade, following the steps in reverse order and adjust the squeegee angle if needed.
To reverse or replace the front squeegee blade...
- Raise the squeegee tool off the floor, then loosen the (2) Thumb Nuts (33) on top of the squeegee tool. Disconnect the Recovery Hose (34) and remove the Squeegee Assembly (12) from the mount.
- Loosen the Front Squeegee Blade Removal Knob (AA), and then remove Tension Strap (AB) and blade.
- The squeegee blade has 4 working edges. Turn the blade so a clean, undamaged edge points toward the front of the machine. Replace the blade if all 4 edges are nicked, torn or worn to a large radius.
- Install the blade, following the steps in reverse order and adjust the squeegee angle if needed.
Adjusting the squeegee
Adjust the squeegee angle whenever a blade is reversed or replaced, or if the squeegee is not wiping the floor dry.
To adjust the squeegee angle...
- Park the machine on a flat, even surface and lower the squeegee.
- The Squeegee Mount Bracket (M) has a factory set position so that the rear squeegee blade touches the floor evenly across its entire width and is bent over slightly as shown.
NOTE: A service technician can adjust the Turnbuckle Assembly (N) to change the squeegee angle if needed.
General machine troubleshooting
| Problem | Possible cause | Remedy |
|---|---|---|
| Poor water pick-up | Worn or torn squeegee blades | Reverse or replace |
| Squeegee out of adjustment | Adjust so blades touch floor evenly across entire width | |
| Squeegee seal clogged or missing | Clean or replace squeegee seal | |
| Recovery tank full | Empty recovery tank | |
| Recovery tank drain hose leak | Secure drain hose cap or replace Parts › | |
| Recovery tank cover gasket leak | Replace gasket / Seat cover properly | |
| Debris caught in squeegee | Clean squeegee tool | |
| Vacuum hose clogged | Remove debris | |
| Using too much solution | Adjust solution flow at control panel | |
| Debris catch cage full | Empty debris catch cage | |
| Poor scrubbing performance | Worn brush or pad | Rotate or replace brushes Parts › |
| Wrong brush or pad type | Consult Advance | |
| Wrong cleaning chemical | Consult Advance | |
| Moving machine too fast | Slow down | |
| Not using enough solution | Increase solution flow at control panel | |
| Inadequate solution flow or no solution | Solution tank empty | Fill solution tank |
| Solution lines, valves, filter or trough clogged | Flush lines, trough and clean solution filter | |
| Solution shutoff valve closed | Open solution shutoff valve | |
| Solution solenoid valve | Clean or replace valve | |
| Machine does not run | Battery connector disconnected | Reconnect battery connectors |
| Tripped 2.5 Amp circuit breaker | Check for electrical short circuit & reset | |
| No FWD/REV wheel drive | Drive system speed controller | Check error fault codes (see service manual) |
| Tripped 30 Amp circuit breaker | Check for drive motor overload | |
| Poor Sweeping Performance (Cylindrical System) | Hopper Full | Empty and clean hopper |
| Brushes worn | Replace brushes | |
| Bristles have taken a set | Rotate brushes | |
| No Detergent Flow (EcoFlex models only) | Empty detergent cartridge | Fill detergent cartridge |
| Plugged or kinked detergent flow line | Purge system, straighten lines to remove any kinks | |
| Dry seal cap on detergent cartridge not sealed | Reseat dry seal cap | |
| Detergent pump wiring disconnected or backwards | Connect or reconnect wiring |
Technical specifications (as installed and tested on the unit)
| Model | Advance SC901 ST 28D | Advance SC901 ST 34D | Advance SC901 ST 32C | |
|---|---|---|---|---|
| Model No. | 56115530 | 56115531 | 56115532 | |
| Voltage, Batteries | V | 36 | 36 | 36 |
| Battery Capacity | Ah | 310 | 310 | 310 |
| Protection Grade | IPX4 | IPX4 | IPX4 | |
| S P L IEC 60335-2-72: 2002 Amend. 1:2005, ISO 11201 | dB(A)/20µPa | 68 | 68 | 69 |
| S P L – KpA (IEC 60335-2-72, ISO 11201) Uncertainty | dB(A) | ±3.0 | ±3.0 | ±3.0 |
| Vibrations at the Hand Controls (ISO 5349-1) | m/s² | < 2.5 | < 2.5 | < 2.5 |
| Maximum Wheel Floor Loading (right front) | psi / N/mm² | 147 / 1.0 | 128 / 0.89 | 155 / 1.1 |
| Maximum Wheel Floor Loading (left front) | psi / N/mm² | 107 / 0.74 | 132 / 1.0 | 128 / 0.88 |
| Maximum Wheel Floor Loading (right rear) | psi / N/mm² | 205 / 1.4 | 432 / 3.0 | 245 / 1.7 |
| Maximum Wheel Floor Loading (left rear) | psi / N/mm² | 521 / 5.6 | 640 / 4.4 | 416 / 2.9 |
| Machine Width (chassis) | in / cm | 30.3 / 77.0 | 30.3 / 77.0 | 30.6 / 77.7 |
| Machine Width with Squeegee | in / cm | 41.8 / 106.2 | 41.8 / 106.2 | 41.8 / 106.2 |
| Machine Height | in / cm | 44.8 | ||
| Machine Length | in / cm | 65.4 / 166 | 67.4 / 171 | 63.1 / 160.3 |
| Solution Tank Capacity | gal / L | 30 / 113.6 | ||
| Recovery Tank Capacity | gal / L | 32 / 121 | ||
| Battery Compartment Size (approximate) | ||||
| Height (maximum) | in / cm | 15 / 38 | ||
| Width (maximum) | in / cm | 26 / 66 | ||
| Length (maximum) | in / cm | 27.5 / 70 | ||
| Scrub brush size | ||||
| Outside Scrub Brush Diameter - Cylindrical (inside core is x in / x.x cm) | in / cm | - | - | 5.5 / 13.9 |
| Scrub Brush Length - Cylindrical (two brushes per machine) | in / cm | - | - | 31 / 78.7 |
| Brush Diameter – Disc (two brushes per machine) | in / cm | 14 / 35.5 | 17 / 43.1 | - |
| Scrub Brush Speed | RPM | 250 | 250 | 900 |
| Cleaning Path Width (scrubbing path) | in / cm | 28 / 71.1 | 34 / 86.3 | 31 / 78.7 |
| Gross Weight* | lb / kg | 1189 / 539.3 | 1205.5 / 546.8 | 1235 / 560.2 |
| Vacuum Motor Size - 710 watts max | HP | 0.95 | ||
| Drive Motor Size | HP | .5 | ||
| Disc Brush Motor Size | HP | 0.75 | 0.75 | - |
| Cylindrical Motor Size | HP | - | - | 0.75 |
| Brush Pressure | lb / kg | 90 / 41 145 / 65 200 / 90 | 90 / 41 145 / 65 200 / 90 | 75 / 34 100 / 45 125 / 56 |
| Maximum Scrub Speed | 3.2 | 3.2 | 3.2 | |
| Maximum Transport Speed | 3.2 | 3.2 | 3.2 | |
| Transport Weight** (with squeegee and brush deck) | lb | 942 | 979 | 1006 |
| Gradeability Transport | 2% (1.15°) | 2% (1.15°) | 2% (1.15°) | |
| Gradeability Cleaning | 2% (1.15°) | 2% (1.15°) | 2% (1.15°) | |
*Gross Weight: Standard machine without options, full solution tank and empty recovery tank, with removable scrub brushes and 310 AH batteries installed.
**Transportation Weight: Standard machine without options, empty solution and recovery tanks, with batteries installed and no operator.
Material composition
Material composition and recyclability
| Type | % of machine weight | % recyclable |
|---|---|---|
| Aluminum | 5% | 100% |
| Electrical / motors / engines - misc | 20% | 25% |
| Ferrous metals | 20% | 100% |
| Harnesses / cables | 3% | 75% |
| Liquids | 0% | 0% |
| Plastic - non-recyclable | 3% | 0% |
| Plastic - recyclable | 3% | 100% |
| Polyethylene | 39% | 100% |
| Rubber | 8% | 34% |
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Advance is a trademark of Nilfisk, Inc. Southeastern Equipment & Supply is an independent dealer.
