This manual will help you get the most from your Nilfi sk Rider Scrubber. Read it thoroughly before operating the machine.
Note: Bold numbers in parentheses indicate an item illustrated on pages A-4 – A-5.
This product is intended for commercial use only.
PARTS AND SERVICE
Repairs, when required, should be performed by your Authorized Nilfi sk Service Center, who employs factory trained service personnel, and maintains an
inventory of Nilfi sk original replacement parts and accessories.
Call the NILFISK DEALER named below for repair parts or service. Please specify the Model and Serial Number when discussing your machine.
MODIFICATIONS
Modifi cations 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 Nilfi sk-Advance Inc. Unapproved modifi cations will void the machine warranty and make the customer liable for any resulting accidents.
NAME PLATE
The Model Number and Serial Number of your machine are shown on the Nameplate on the machine. This information is needed when ordering repair parts
for the machine. Use the space below to note the Model Number and Serial Number of your machine for future reference.
MODEL NUMBER _______________________________________________________
SERIAL NUMBER ______________________________________________________
UNCRATE THE MACHINE
When the machine is delivered, carefully inspect the shipping carton and the machine for damage. If damage is evident, save the shipping carton so that it
can be inspected. Contact the Nilfi sk Customer Service Department immediately to fi le a freight damage claim.
After removing the carton, cut the plastic straps and remove the wooden blocks next to the wheels. Use a ramp to roll the machine from the pallet to the fl oor.
A-2 - FORM NO. 56041813 - BR850S SBG SPECIAL
8/2009
revised 1/2013
ENGLISH / A-3
CAUTIONS AND WARNINGS
SYMBOLS
Nilfi sk uses the symbols below to signal potentially dangerous conditions. Always 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.
GENERAL SAFETY INSTRUCTIONS
Specifi c 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 offi ces other than normal residential housekeeping
purposes.
WARNING!
* This machine shall be used only 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.
* While on ramps or inclines, avoid sudden stops. Avoid abrupt sharp turns. Use low speed down ramps.
* Keep sparks, fl ame 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
fl ame. 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 fl ammable cleaning agents, operate the machine on or near these agents, or operate in areas where fl ammable
liquids exist.
* Do not clean this machine with a pressure washer.
* Only use the brushes provided with the appliance or those specifi ed 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.
CAUTION!
* This machine is not approved for use on public paths or roads.
* This machine is not suitable for picking up hazardous dust.
* Do not use scarifi er discs and grinding stones. Nilfi sk will not be held responsible for any damage to fl oor surfaces caused by
scarifi ers or grinding stones (can also cause damage to the brush drive system).
* 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 fi rst turning the key switch off (O), removing the key and applying the parking brake.
* 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 fi ttings. Flush with windshield washer fl uid.
*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.
8/2009
SAVE THESE INSTRUCTIONS
FORM NO. 56041813 - BR850S SBG SPECIAL - A-3
A-4 / ENGLISH
1
2
3
4
5
6
7
8
10
11
12
14
15
16
17
18
19
20
21
22
23
24
9
26
26
ON
OFF
13
25
27
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 2 pages.
1 Recovery Tank Cover
2 Solution Tank Fill Cover
3 Operator’s Seat
4 Solution Tank Drain Hose
5 Steering Wheel Tilt Adjust Knob
6 Brake Pedal / Parking Brake
7 Solution Flow Control Lever
8 Drive Pedal, Directional/Speed
9 Hopper (cylindrical models only)
10 Drive and Steer Wheel
11 Wheel Drive Circuit Breaker
12 Control Circuit Circuit Breaker
13 Emergency Stop Switch / Battery Disconnect
A Scrub OFF Indicator
B Scrub OFF Switch
C Scrub Pressure Decrease Indicator
D Scrub Pressure Decrease Switch
E Scrub Pressure Increase Indicator
F Scrub Pressure Increase Switch
G Scrub Pressure / Hourmeter Display
H Wand Switch Indicator
I Wand Switch
J Key Switch
K Battery Condition Indicator
L Speed Select Switch
M Speed Select Indicator
N Horn Switch
O Vacuum Switch
P Vacuum System Indicator
Q Solution System Indicator
R Solution Switch
8/2009
FORM NO. 56041813 - BR850S SBG SPECIAL - A-5
A-6 / ENGLISH
415 Ah, 20 Hr. Rate
revised 1/2013
DESCRIPTION OF THE BATTERY CONDITION INDICATORS
The battery condition indicator (K) consists of three lights, a green, a yellow, and a red. The voltage indication will change based on the cutoff level (standard
or alternate) selected in the control unit. The battery voltage ranges for the various indications are listed below:
Standard Alternate
Green 34.00+ 34.50+
Green & Yellow 33.00-33.99 34.00-34.49
Yellow 32.00-32.99 33.50-33.99
Yellow & Red 31.50-31.99 33.00-33.49
Red 31.00-31.49 32.50-32.99
Flashing Red/Cutoff <31.00 <32.50
NOTE: Refer to service manual for selection of alternate cut-off level. Once the low voltage cutout level has been reached (fl ashing red indicator) the
batteries must be FULLY recharged to reset the battery condition indicator. The scrub system will not function until the indicator has been reset.
INSTALL THE BATTERIES
WARNING!
Use extreme caution when working with batteries. Sulfuric acid in batteries can cause severe injury if allowed to contact the skin
or eyes. Explosive hydrogen gas is vented from inside the batteries through openings in the battery caps. This gas can be ignited
by any electrical arc, spark or fl ame.
When Servicing Batteries...
* Remove all jewelry.
* Do not smoke.
* Wear safety glasses, a rubber apron and rubber gloves.
* Work in a well-ventilated area.
* Do not allow tools to touch more than one battery terminal at a time.
CAUTION!
Electrical components in this machine can be severely damaged if the batteries are not installed and connected properly.
Batteries should be installed by Nilfi sk or by a qualifi ed electrician.
1 Turn the Key Switch (J) off (O) and remove the key. Then swing open the Battery Compartment Cover (16).
2 Using (2) people and an appropriate lifting strap, carefully lift the batteries into the compartment tray exactly as shown. Refer to decal 56380513 battery
cable layout.
3 See Figure 1. Install battery cables as shown and tighten the nuts on the battery terminals.
4 Install the battery boots and secure tightly to the battery cables with the supplied tie straps.
5 Connect the battery pack connector to the machine connector (22) and close the battery compartment cover.
When changing batteries or the charger, please contact your local authorized service center for correct battery, charger and
machine settings to prevent battery damage.
FIGURE 1
A-6 - FORM NO. 56041813 - BR850S SBG SPECIAL
8/2009
revised 4/2014
ENGLISH / A-7
INSTALL THE BRUSHES (DISC SYSTEM)
CAUTION!
Turn the key switch off (O) and remove the key, before changing the brushes, and before opening any access panels.
1 Make sure the Key Switch (J) is off (O). To access the brushes, remove both side skirt assemblies. Note: The skirts are held in place by two large Knobs, loosen these
knobs and slide the skirt assemblies off of the Scrub Deck.
2 To mount the brushes (or pad holders) align the lugs on the brush with the holes on the mounting plate and turn to lock in place (turn outside edge of brush towards front
of machine).
INSTALL THE BRUSHES (CYLINDRICAL SYSTEM)
CAUTION!
Turn the key switch off (O) and remove the key, before changing the brushes, and before opening any access panels.
1 Make sure the Key Switch (J) is off (O). To access the brushes, swing both side skirt assemblies open. Note: The skirts are held in place by a large cotter pin on each
side, remove the pins and swing the skirt assemblies out of the way. Loosen the black knobs (one on each side) on top of the idler assemblies and remove the idler
assemblies. Slide the brush into the housing, lift slightly, push and turn until it seats. Re-install the idler assemblies, close the skirt assemblies and secure with cotter pins.
INSTALL THE SQUEEGEE
1 Make sure the Squeegee (19) is up (O) and the Key Switch (J) is off (O). Hold the squeegee tool so that the curved ends point forward, then slide the
squeegee tool onto the Mount (A) (See Figure 2).
2 Hand tighten the Thumb Nuts (B) and then connect the vacuum hose to the Squeegee Tube (C) (vacuum hose should loop to the right).
3 Lower the squeegee, move the machine ahead slightly and adjust the squeegee tilt and height using the Squeegee Tilt Adjust Knob (24) and Squeegee
Height Wheels (D) so that the rear squeegee blade touches the fl oor evenly across its entire width and is bent over slightly as shown in the squeegee
cross section.
FILL THE SOLUTION TANK
Read the cleaning chemical label and fi gure the proper amount of chemical to mix for a tank that holds 40 US gallons (151 liters).
Open the Solution Tank Cover (2), then fi ll the tank 1/3 full of water, add the cleaning chemical, then fi ll the tank to 7.62cm (3 inches) from the top of the tank
opening (fi ll to bottom of the wall in tank opening).
CAUTION!
Use only low-foaming, non-fl ammable liquid detergents intended for automatic scrubber machine applications. Water
temperature should not exceed 130 degrees Fahrenheit (54.4 degrees Celsius).
FIGURE 2
8/2009
FORM NO. 56041813 - BR850S SBG SPECIAL - A-7
A-8 / ENGLISH
revised 1/2010
OPERATING THE MACHINE
WARNING!
Be sure you understand the operator controls and their functions.
While on ramps or inclines, avoid sudden stops when loaded. Avoid abrupt sharp turns. Use low speed down hills.
To Scrub...
Follow the instructions in preparing the machine for use section of this manual.
1 While seated on the machine, adjust the seat and steering wheel to a comfortable operating position using the adjustment controls (25) and (5).
2 Turn the Master Key Switch (J) ON (I). This will display the control panel indicator lights, reference the Battery Condition Indicator (K) and Hour Meter
(G).
3 Release the Parking Brake (6). To transport the machine to the work area, apply even pressure with your foot on the front of the Drive Pedal (8) to go
forward or the rear of the pedal for reverse. Vary the pressure on the foot pedal to obtain the desired speed.
4 Adjust the Solution Flow Control Valve Lever (7) to about 1/4 to 1/3 open position.
The fl ow rate can be changed to allow variable solution fl ow for different types of fl oors to be scrubbed. Example: A rough or absorbent fl oor surface
such as unfi nished concrete, will require more solution than a smooth fi nished fl oor.NOTE: For a consistent reduced fl ow of solution; open the Solution Flow Control Valve Lever (7) all the way and then turn ON the ECO Solution™
Valve (26). When the lever is in the “OFF” position; the machine operates conventionally; solution fl ow is determined by the Solution Flow Control Lever
(7). When the lever is in the “ON” position; solution fl ow is controlled automatically. The Solution Flow Control Lever (7) should not be shut off, but is
otherwise inactive. Make sure that the lever for Valve (26) is all the way ON or all the way OFF, never in between. If more solution is needed, turn OFF
the ECO Solution™ Valve (26) and adjust the solution fl ow with the Solution Flow Control Valve Lever (7).
NOTE: The solution and vacuum systems are automatically activated when the Scrub Pressure Decrease Switch (D) or the Scrub Pressure Increase
Switch (F) is pressed. No further action is required. Any individual system can be turned OFF or back ON by simply pressing its switch at any time
during scrubbing.
5 Press and hold the Solution Switch (R) for 5 seconds to pre-wet the fl oor. NOTE: This must be done prior to pressing the Scrub ON Switch (F).
6 When the Scrub Pressure Decrease Switch (D) or the Scrub Pressure Increase Switch (F) is selected, the brushes and squeegee are automatically
lowered to the fl oor. The machine’s scrub brush rotation, solution system fl ow and vacuum starts when the Drive Pedal (8) is activated. Note: When
operating the machine in reverse, only the brushes will rotate, the solution is automatically shut off to conserve usage.
7 Begin scrubbing by driving the machine forward in a straight line at a normal walking speed and overlap each path by 2-3 inches (50-75 mm). Adjust
when necessary the machine speed and solution fl ow according to the condition of the
fl oor.
CAUTION!
To avoid damaging the fl oor, keep the machine moving while the brushes are turning.
8 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.
9 For extremely dirty fl oors, 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 fi rst pass the squeegee is in the up position (press the Vacuum Switch (O) to raise the squeegee).
This allows the cleaning solution to remain on the fl oor to work longer. The fi nal pass is made over the same area, with the squeegee lowered to pick
up the accumulated solution.
10 The recovery tank has an automatic fl oat shut-off to prevent solution from entering the vacuum system when the recovery tank is full. When the fl oat
shut-off is activated, the control system will shut down the scrub, vacuum and solution systems. The Scrub Pressure / Hourmeter Display (G) will
display “FULL”. To clear the display, press the Scrub OFF Switch (B), Scrub Pressure Decrease Switch (D), Scrub Pressure Increase Switch (F) or the
Vacuum Switch (O). When the fl oat closes, the recovery tank must be emptied. The machine will not pick up water with the fl oat closed. NOTE: If
the control repeatedly gives a full indication when the tank is not full, the automatic shut-off feature can be disabled, have a qualifi ed service technician
refer to the service manual to perform this function.
11 When the operator wants to stop scrubbing or the recovery tank is full, press the Scrub OFF Switch (B) once. This will automatically stop the scrub
brushes and solution fl ow and the scrub deck will raise UP. NOTE: the vacuum/squeegee system will not be turned off when the switch is only pressed
once, this is to allow any remaining water to be picked up without turning the vacuum back on. Press the switch a second time and the squeegee will
raise and the vacuum will stop after a 10 second delay.
12 Drive the machine to a designated waste water “DISPOSAL SITE” and empty the recovery tank. To empty, pull the Drain Hose (21) from its rear
storage area, then remove the plug (hold the end of the hose above the water level in the tank to avoid sudden, uncontrolled fl ow of waste water). Refi ll
the solution tank and continue scrubbing.
WET VACUUMING
Steps to follow in fi tting the machine with optional attachments for wet vacuuming.
1 Disconnect the recovery hose from the squeegee. Connect the coupler and hose from the wand kit to the recovery hose.
2 Attach suitable wet pick-up tools to the hose. (An optional Wand Kit PN56314307 is available from Nilfi sk).
3 Turn the Master Key Switch (J) ON, next press the Wand Switch (I). The vacuum motor and pump will run continuously until the switch is pressed
again to turn them OFF. NOTE: If the control repeatedly gives a full indication when the tank is not full, the automatic shut-off feature can be disabled,
have a qualifi ed service technician perform this function.
A-8 - FORM NO. 56041813 - BR850S SBG SPECIAL
8/2009
revised 1/2010
ENGLISH / A-9
AFTER USE
1 When fi nished scrubbing, press the Scrub Off Switch (B) twice, this will automatically raise, retract and stop all the machine systems (brush, squeegee,
vacuum and solution). Then drive the machine to a service area for daily maintenance and review of other needed service up keep.
2 To empty the solution tank, remove the Solution Drain Hose (4) from its storage clamp. Direct the hose to a designated “DISPOSAL SITE” and remove
the plug. Rinse the tank with clean water.
3 To empty the recovery tank, pull the Recovery Tank Drain Hose (21) from its storage area. Direct the hose to a designated “DISPOSAL SITE” and
remove the plug (hold the end of the hose above the water level in the tank to avoid sudden, uncontrolled fl ow of waste water). Rinse the tank with
clean water.
4 Remove the brushes or pad holders. Rinse the brushes or pads in warm water and hang up to dry.
5 Remove the squeegee, rinse it with warm water and re-install on mount.
6 Remove the hopper on cylindrical systems and clean thoroughly. Remove from either side of the machine by opening the skirt and tilting the hopper up
and away from housing, then pull out.
7 Check the maintenance schedule below and perform any required maintenance before storage
MAINTENANCE SCHEDULE
MAINTENANCE ITEMDailyWeeklyMonthlyYearly
Charge BatteriesX
Check/Clean Tanks & HosesX
Check/Clean/Rotate the Brushes/PadsX
Check/Clean the SqueegeeX
Check/Clean Vacuum Shut-Off FloatX
Check/Clean the vacuum motor foam fi lter(s)X
Empty/Clean Strainer Basket in Recovery TankX
Clean Hopper on Cylindrical SystemX
Check Each Battery Cell(s) Water LevelX
Inspect Scrub Housing SkirtsX
Inspect and clean Solution FilterX
Check Foot/ Parking Brake For Wear & AdjustmentX
Clean Solution Trough on Cylindrical SystemX
Lubrication - Grease FittingsX
* Check Carbon BrushesX
* Have Nilfi sk check the vacuum motor carbon motor brushes once a year or after 300 operating hours. The brush and drive motor carbon brushes check
every 500 hours or once a year.
NOTE: Refer to the Service Manual for more detail on maintenance and service repairs.
8 Store the machine indoors in a clean dry place. Keep from freezing. Leave the tanks open to air them out.
9 Turn the Master Key Switch (J) OFF (O) and remove the key.
LUBRICATING THE MACHINE
Once a month, pump a small amount of grease into each grease fi tting on the machine until grease seeps out around the bearings.
Grease fi tting locations are:
• Squeegee Caster Wheel Axle
• Steering Wheel Shaft Universal joint
Once a month, apply light machine oil to lubricate the:
• Steering Chain
• General Pivot Points For the Squeegee, Brush Linkage and Side Skirts
• Squeegee mount angle adjustment knob threads
8/2009
FORM NO. 56041813 - BR850S SBG SPECIAL - A-9
A-10 / ENGLISH
CHARGING THE BATTERIES
Charge the batteries each time the machine is used, or whenever the Battery Condition Meter (K) is showing a yellow , red or fl ashing red indicator light(s).
To Charge the Batteries...
1 Depress the Battery Disconnect (13).
2 Open the Battery Compartment Cover (16) to provide proper ventilation.
3 Push the connector from the charger into the Battery Connector (22).
4 Follow the instructions on the battery charger.
5 Check the fl uid level in all battery cells after charging the batteries. Add distilled water, if necessary, to bring the fl uid level up to the bottom of the fi ller
tubes.
WARNING!
Do not fi ll the batteries before charging.
Only charge batteries in a well-ventilated area.
Do not smoke while servicing the batteries.
CAUTION!
To avoid damage to fl oor surfaces, always wipe water and acid from the top of the batteries after charging.
CHECKING THE BATTERY ELECTROLYTE LEVEL
Check the electrolyte level of the batteries at least once a week.
After charging the batteries, remove the vent caps and check the electrolyte level in each battery cell. Use distilled water to fi ll the batteries to the bottom of
the fi ller tube.
Do not over-fi ll the batteries!
CAUTION!
Acid can spill onto the fl oor if the batteries are overfi lled.
Tighten the vent caps. If there is acid on the batteries, wash the tops of the batteries with a solution of baking soda and water (2 tablespoons of baking soda
to 1 quart of water).
A-10 - FORM NO. 56041813 - BR850S SBG SPECIAL
8/2009
ENGLISH / A-11
SQUEEGEE MAINTENANCE
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...
1 See Figure 3. Raise the squeegee tool off the fl oor, then unsnap the Rear Squeegee Blade Removal Latch (A) on the squeegee tool.
2 Remove the Tension Strap (B).
3 Slip the rear blade off the alignment pins.
4 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.
5 Install the blade, following the steps in reverse order and adjust the squeegee tilt.
To Reverse or Replace the Front Squeegee Blade...
1 Raise the squeegee tool off the fl oor, then loosen the (2) Thumb Nuts (C) on top of the squeegee and remove the squeegee tool from the mount.
2 Loosen the Front Squeegee Blade Removal Thumb Nut (D), then remove Tension Strap (E) and blade.
3 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.
4 Install the blade, following the steps in reverse order and adjust the squeegee tilt.
SQUEEGEE ADJUSTMENT
There are two squeegee tool adjustments possible, angle and height.
Adjust the squeegee angle whenever a blade is reversed or replaced, or if the squeegee is not wiping the fl oor dry.
1 Park the machine on a fl at, even surface and lower the squeegee. Then drive the machine forward enough to have the squeegee blades fold over to
the rear.
2 Adjust the squeegee tilt and height using the Squeegee Tilt Adjust Knob (24) and Squeegee Height Wheel (F) so that the rear squeegee blade touches
the fl oor evenly across its entire width and is bent over slightly as shown in the squeegee cross section.
FIGURE 3
8/2009
FORM NO. 56041813 - BR850S SBG SPECIAL - A-11
A-12 / ENGLISH
revised 4/2014
SIDE SKIRT MAINTENANCE (DISC SYSTEM)
The side skirt’s function is to channel the waste water to the squeegee, helping contain the water within the machines cleaning path. During normal use the
blades will wear in time. The operator will notice a small amount of water leaking out underneath the side skirts. A height adjustment can easily be made to
lower the blades so that all the water can be pick-up by the squeegee.
To reverse or replace the scrub system side skirt(s) ...
1 See Figure 4. Loosen the (2) side skirt Retainer Knobs (A) (2 per side) and pull the Skirt Assemblies (B) off from the scrub deck.
2 Remove all the hardware that holds the blades to the skirt housings.
3 Replace the blades as a set if they are nicked, torn or worn beyond their ability to be adjusted.
4 Reinstall the skirt housing assemblies onto the machine and adjust the blade for proper contact to the fl oor when the brush deck is placed in the scrub
position.
SIDE SKIRT HEIGHT ADJUSTMENT (DISC SYSTEM)
1 The side skirt housing knob retainer screw studs have leveling Adjuster Collars (C), that are to be raised or lowered to compensate for blade wear.
2 To adjust, remove the Skirt Assemblies (B) from the Scrub Deck (D) to access the Adjuster Collars (C). Adjustment Tip: The skirts Retainer Knobs (A)
can be loosened with skirts left on and the Adjuster Collars (C) rotated by reaching under the skirt housing.
3 Turn the Adjuster Collars (C) (Up or Down) to where the blades just fold over enough when scrubbing that all the waste water is contained inside the
skirting. Note: Make small adjustments to obtain good blade wiping. Do not lower the blades too much to where they fold over excessively and cause
unneeded blade wear.
FIGURE 4
A-12 - FORM NO. 56041813 - BR850S SBG SPECIAL
8/2009
revised 4/2014
ENGLISH / A-13
SIDE SKIRT MAINTENANCE (CYLINDRICAL SYSTEM)
The side skirts function is to channel the waste water to the squeegee, helping contain the water within the machines cleaning path. During normal use the
blades will wear in time. The operator will notice a small amount of water leaking out underneath the side skirts. Skirt height adjustment is automatic on this
system. The skirt assemblies should move up and down freely for proper operation.
To replace the scrub system side skirt(s) ...
1 See Figure 5. Remove the (2) (A) Cotter Pins and swing the Skirt Assemblies open. Remove the (B) Screws and Nuts, remove the Skirts and replace.
FIGURE 5
8/2009
FORM NO. 56041813 - BR850S SBG SPECIAL - A-13
A-14 / ENGLISH
GENERAL MACHINE TROUBLESHOOTING
ProblemPossible CauseRemedy
Poor water pick-upWorn or torn squeegee bladesReverse or replace
Squeegee out of adjustmentAdjust so blades touch fl oor evenly
across entire width
Recovery tank fullEmpty recovery tank
Recovery tank drain hose leakSecure drain hose cap or replace
Recovery tank cover gasket leakReplace gasket / Seat cover properly
Debris caught in squeegeeClean squeegee tool
Vacuum hose cloggedRemove debris
Using too much solutionAdjust solution control valves
Foam fi lter cover not seatedSeat cover properly
Poor scrubbing performanceWorn brush or padRotate or replace brushes
Wrong brush or pad typeConsult Nilfi sk
Wrong cleaning chemicalConsult Nilfi sk
Moving machine too fastSlow down
Not using enough solutionAdjust solution control valves
Inadequate solution fl ow
or no solution
Machine does not runEmergency stop switch trippedReconnect battery connectors
No FWD/REV wheel driveDrive system speed contollerCheck error fault codes
Vacuum shuts off and display shows
“FULL” when recovery tank is not full
Poor Sweeping Performance
(Cylindrical System)
Solution tank emptyFill solution tank
Solution lines, valves, fi lter or trough
clogged
Solution control valves not open Adjust solution control valves
Solution solenoid valveClean or replace valve
Operator seat safety switchCheck for open circuit and replace
Main system controllerCheck error fault codes
Tripped 10 Amp circuit breakerCheck for electrical short circuit & reset