Repairs, when required, should be performed by your Authorized Nilfisk-Advance Service Center, who employs factory trained service personnel, and maintains an inventory of Nilfisk-Advance original replacement parts and accessories. Call the NILFISK-ADVANCE DEALER named below for repair parts or service. Please specify the Model and Serial Number when discussing your machine.
This machine is not suitable for picking up hazardous dust. • Do not use scarifier discs and grinding stones. Nilfisk-Advance will not be held responsible for any damage to floor surfaces caused by scarifiers or grinding stones (can also cause damage to the brush drive system).
Note: See the individual machine system sections for maintenance information. * Cylindrical models only. ** Have Nilfisk-Advance: Check vacuum motor carbon brushes (Qty 2) once a year or after 300 operating hours. Check brush motor carbon brushes (Qty 4) once a year or after 500 operating hours.
L M W Recovery Tank Drain Hose & Cap C D L Squeegee Pick-Up Hose Back flush C D L Page 1 of 2 Copyright 2001 Nilfisk-Advance. 4/18/01 revised 10/01 FORM NO. 56043058 Hydro-Retriever™ 3800 / 2042 / BR 1100 - 7...
Page 10
ACKNOWLEDGED BY: Service Technician Signature Date Customer Signature Date COMMENTS: ___________________________________________________________________________ ___________________________________________________________________________ ___________________________________________________________________________ ___________________________________________________________________________ ___________________________________________________________________________ ___________________________________________________________________________ ___________________________________________________________________________ ___________________________________________________________________________ Page 2 of 2 Copyright 2001 Nilfisk-Advance. 4/18/01 8 - FORM NO. 56043058 Hydro-Retriever™ 3800 / 2042 / BR 1100 revised 10/01...
KNOW YOUR MACHINE Recovery Tank Covers Emergency Stop Switch / Battery Disconnect Solution Tank Fill Cover Scrub Brush Deck and Side Skirts Operator Seat w/Safety Switch Rear Wheel Solution Tank Drain Hose Battery Compartment Steering Wheel Adj. Tilt Knob Recovery Tank Shutoff Float Brake Pedal &...
Page 12
KNOW YOUR MACHINE CONTROL PANEL Main Power Indicator Solution System Fault Indicator Scrub Off Button Normal Scrub Button Heavy Scrub Button Solution System Indicator Vacuum Button Solution Button Battery Condition Indicator Hourmeter/Status Display Master On/Off Key Switch Scrub Mode Off Indicator Normal Scrub Mode Indicator Heavy Scrub Mode Indicator Vacuum System Indicator...
KNOW YOUR MACHINE FUNCTIONAL DESCRIPTION OF CONTROL BUTTONS: The controls were designed with one touch operation in mind. For single pass scrubbing the user can simply press one button and all systems on the machine will be ready to go. For most single-pass scrubbing operations, the operator should only need to use the first three buttons on the control panel.
KNOW YOUR MACHINE DESCRIPTION OF INDICATORS ON THE CONTROL PANEL: In general, the following guidelines apply to the control panel indicators: A steady red indicator means that the function is inhibited for some reason. For example, if the scrub system is off and the operator is not on the seat, the scrub system indicator will be red indicating that the system cannot be turned on until the operator is on the seat.
KNOW YOUR MACHINE DESCRIPTION OF INDICATORS ON THE CONTROL PANEL: (CONTINUED) Main Power Indicator (23): • This indicator will be GREEN when the key switch is ON. • This indicator will flash RED if there is a system fault that requires turning the Master ON/OFF Key Switch (33) off to reset. •...
SOLUTION SYSTEM FUNCTIONAL OVERVIEW The plastic (polyethylene) molded main body structure fulfills three (design) functional uses. They are the platform for the operator’s seat, mount location cavity for the electrical panel and as the storage tank for the machine’s scrubbing solution. The solution tank fill capacity is 53 gallons (200 L).
SOLUTION SYSTEM FIGURE 2 YEL/BLK RED/BRN ORN/GRN GRN/WHT ORN/GRN ORN /GRN RED/BRN RED/WHT BRN /WHT GRN/WHT RED/WHT BRN/WHT TROUBLESHOOTING GUIDE Problem Possible Cause Inadequate or no solution flow No solution in the tank Main solution flow control valve lever is in the off position Clogged solution filter, valves, hoses &...
SOLUTION SYSTEM SOLUTION SOLENOID REMOVAL FIGURE 3 Drain the solution tank or put the flow control lever in the full OFF position to prevent solution loss. With the operator seated turn on the key switch then press FRONT the normal scrub button to lower the scrub deck to the floor. Note: Don’t turn the key switch off until disconnecting the battery pack (push emergency disconnect knob (12)).
SOLUTION SYSTEM SOLUTION FLOW CONTROL VALVE REMOVAL Drain the solution tank using the drain hose. Open the right side scrub brush access door then remove the skirt assembly (2 knobs) to access the valve. See Figure 5. Loosen the (2) (I) Hose Clamps and pry off the inlet & outlet solution hoses from the valve’s barbed fittings. Remove the Retainer Ring (J) from the solution control rod and separate from the valve handle.
SCRUB BRUSH SYSTEM FUNCTIONAL OVERVIEW • Disc Brush System Overview See Figure 3. The machines Hydro-Retriever ™ 3800 and BR 1100 (model #’s 56411000 & 56411002) use the disc type scrub system. A single 3HP 36V DC permanent magnet motor is connected at both ends with (2) 90-degree gearboxes that drive the two 20" disc (rotary) brushes. •...
SCRUB BRUSH SYSTEM SCRUB BRUSH SYSTEM TROUBLESHOOTING On all models (disc & cylindrical) the scrub system’s major electrical components are monitored by the main controller (A3) to detect any system function failures (error codes). The system components covered are the brush motor(s) (M2 & M11), brush solenoid (K3) and brush lift actuator motor (M1).
SCRUB BRUSH SYSTEM SCRUB BRUSH DECK REMOVAL (DISC) Open both the left and right side brush housing doors. Then remove both splash skirts and scrub brushes. Place wood blocking (2 by 4) under both brush drive discs and lower the deck to the floor by pressing the normal scrub panel button. After brush deck is in the lowered position don’t turn the key switch off until disconnecting the battery pack (push in the emergency disconnect (12)).
Note: Apply a small amount of grease or “Never Seize” to the gear box output shaft when reinstalling the drive Hub(s) (L). Note: The gearbox output shaft rotates the brush holders in the opposite direction of other Nilfisk-Advance auto scrubbers (see below). FRONT FRONT revised 10/01 FORM NO.
SCRUB BRUSH SYSTEM SCRUB BRUSH GEAR BOX REPLACEMENT If the need to replace a disc scrub drive gearbox should arise, please follow the re-assembly instructions below. Installing the shaft keys-See Figure 4 Install (1) Shaft Key (U) into each end of motor shaft, you may need to use a hammer to complete this operation. Applying Never Seize Starting with the back-end of the motor.
Page 25
SCRUB BRUSH SYSTEM Leads at 12:00 FIGURE 4 Commutator End Back-End Apply Never Seize Shafts facing LEFT VIEW FIGURE 5 Motor terminals must be on the right hand side of the machine, pointing towards the front of the machine. FRONT revised 12/02 FORM NO.
SCRUB BRUSH SYSTEM SCRUB BRUSH SIDE SKIRT REPLACEMENT (DISC) See Figure 6. Loosen the (4) side skirt Retainer Knobs (AB) (2 per side) and pull the Skirt Assemblies (AC) off from the scrub deck. Remove all the hardware that holds both the (short and long) blades and retainers to the skirt housing. Each of the (2) long blades has 4 working edges and the (2) short blades have 2.
SCRUB BRUSH SYSTEM SCRUB BRUSH LIFT ACTUATOR REMOVAL (DISC & CYLINDRICAL) Note: All new replacement actuator motors are not shipped with the lift nut pre-adjusted for any machine model applications. If possible lower the scrub deck with the scrub brushes installed. Don’t turn the key switch off until disconnecting the battery pack by using the emergency disconnect (12).
SCRUB BRUSH SYSTEM SCRUB BRUSH DECK ASSEMBLY REMOVAL (CYLINDRICAL) Lower the scrub deck with the cylindrical brushes installed. Note: Don’t turn the key switch off until disconnecting the battery pack by pushing in the emergency disconnect knob (12). This procedure is done to prevent the scrub deck from automatically raising itself when the key is turned off.
SCRUB BRUSH SYSTEM SCRUB BRUSH DECK LEVELING ADJUSTMENT (CYLINDRICAL) See Figure 9. On a level floor surface put the scrub deck in the raised (stored) position and measure the distance from the floor to the bottom edge of the scrub deck at all Four Corners as shown. The four measurements should be approximately 2-1/2 inches (64 mm).
SCRUB BRUSH SYSTEM SCRUB BRUSH MOTOR(S) REMOVAL (CYLINDRICAL) See Figure 10. First open both the left and right side brush housing doors, and then remove the Hairpin (N) from both the scrub deck skirt assemblies and swing them open. Next remove the Belt Guards (O) (4 screws per side). With an operator in the driver’s seat with the key switch ON and the normal scrub function selected press the drive pedal to start the scrub brushes and observe which brush motor needs to be removed.
SCRUB BRUSH SYSTEM FIGURE 11 Brush Left Motor Right Motor FRONT – Belt – Belt – Brush SCRUB BRUSH REMOVAL AND INSTALLATION (CYLINDRICAL) Make sure the key switch is off and disconnect the battery pack before servicing. To access the brushes, swing open both the side skirt assemblies. See Figure 10. Note: The skirts are held in place by Hairpins (N) on each side, remove the pins and swing the skirt assemblies out of the way.
SIDE BROOM SYSTEM (2042 / BR 1100C-XL) GENERAL FUNCTIONAL OVERVIEW Side Broom System 2042 / BR 1100C-XL The models 2042 & BR 1100C-XL only are equipped with two (left & right) 20-inch front corner mounted rotary sweeping brooms. Light sweepable debris can easily be directed into the two main cylindrical scrub brushes and collected in a removable debris tray.
SIDE BROOM SYSTEM (2042 / BR 1100C-XL) 2042 / BR 1100C-XL SWEEP FRAME ASSEMBLY REMOVAL Lower the side brooms to the floor, then shut off machine power by pushing in the emergency quick disconnect knob (12). From underneath front of machine unplug the side broom system wire harness connector. Also cut and remove any tie straps securing harness to chassis.
SIDE BROOM SYSTEM (2042 / BR 1100C-XL) SIDE BROOM MOTOR(S) REMOVAL Have the side brooms in the up (stored) position, then shut off machine power by pushing in the emergency quick disconnect knob (12). See Figure 1. Next remove the Corner Bumper Roller (N) from the machine side requiring the broom motor repair. See Figure 3.
RECOVERY SYSTEM FUNCTIONAL OVERVIEW Vacuum / Recovery System General Dirt and water are lifted off the floor into the recovery tank by airflow, created by a 3-Stage 36V vacuum motor. The wastewater and air enter the vacuum system at the squeegee tool, through small openings (notches) located in the front squeegee blade. The small openings are the entrance points for the water and air, and help speed up the airflow producing the suction to lift the wastewater off of the floor.
RECOVERY SYSTEM VACUUM / RECOVERY SYSTEM SERVICE MAINTENANCE CHECKLIST Whenever there is a vacuum problem, it’s best to check over the entire system. Use the checklist below as a guide, to thoroughly check the vacuum system. Clean built-up dirt from the inside of the squeegee tool. Replace the squeegee blades if they are nicked or torn.
SQUEEGEE SYSTEM SQUEEGEE SYSTEM LIFT MOTOR OVERVIEW The squeegee pickup tool is raised and lowered by a 36V actuator motor assembly mounted horizontally in the left rear of the chassis underneath the recovery tank. The main control board assembly A3 regulates (manages) the machine’s squeegee tool system input and output operating functions.
Page 39
SQUEEGEE SYSTEM FIGURE 2 FRONT revised 12/02 FORM NO. 56043058 Hydro-Retriever™ 3800 / 2042 / BR 1100 - 37...
SQUEEGEE SYSTEM SQUEEGEE MAINTENANCE If the squeegee leaves narrow streaks of 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...
WHEEL DRIVE SYSTEM GENERAL FUNCTIONAL OVERVIEW A 2.7 HP separately excited (field & armature) 36V DC motor/gear/wheel unit (M6) is used to propel the machine. A Curtis model 1243 PMC solid state speed controller (A1) regulates (outputs) the variable speed Fwd/Rev wheel drive motor functions. The controller unit is located to the left of the operator seat, behind the electrical access panel.
Page 43
WHEEL DRIVE SYSTEM FIGURE 1 YEL/BLK ORN/GRN GRN/WHT RED/BRN GRN/WHT ORN/GRN ORN/GRN RED/BRN RED/WHT BRN/WHT To M2 or (M2 & M11) BLK/WHT BLK/WHT GRN/WHT GRN/WHT WHT/BRN BRN/WHT BLU/RED GRN/WHT FRONT revised 12/02 FORM NO. 56043058 Hydro-Retriever™ 3800 / 2042 / BR 1100 - 41...
WHEEL DRIVE SYSTEM Low Current controller A1 Pin Key Detail Pin # Wire Color Controller Pin Description & Function Open not used Red/Wht Fault 1: Controller fault output to operator control panel LED status display. Open not used Blu/Red Main Contactor Driver: Battery (-) output to main contactor K1. Open not used Throttle Control: 0-5V electronic throttle motor speed input.
WHEEL DRIVE SYSTEM STEERING CHAIN ADJUSTMENT The steering chain should be adjusted so that there is about 1/4" (6 mm) total deflection with moderate pressure applied at point (A) shown in Figure 2. Loosen the bolt and lock nut on the chain idler sprocket then move the idler sprocket in the slot to adjust chain tension and retighten. STEERING CHAIN REMOVAL See Figure 2.
WHEEL DRIVE SYSTEM STEERING SPINDLE AND WHEEL DRIVE ASSEMBLY REMOVAL WARNING! Turn the main power key switch (33) to the OFF position and disconnect the battery pack by pushing in the emergency disconnect knob (12). Next set machine parking brake (6) and block both rear wheels so machine can’t roll. See Figure 3.
Page 47
WHEEL DRIVE SYSTEM FIGURE 4 FRONT Steer Plate Spindle Weldment Drive Wheel Motor Mount revised 12/02 FORM NO. 56043058 Hydro-Retriever™ 3800 / 2042 / BR 1100 - 45...
WHEEL DRIVE SYSTEM GEAR HOUSING REMOVAL Follow steps 1-7 of the Steering Spindle and Wheel Drive Assembly Removal section. Follow steps 1-2 & 4 in the Drive Tire Removal section. See Figure 6. Remove the (8) (K) socket headed cap screws (M8x30 mm) from the Motor Flange (L) (use a 6 mm hex socket wrench). Service Tip: Before disassembling punch witness marks into both gear housing and motor mount flanges to reference when re-assembling.
Page 49
WHEEL DRIVE SYSTEM FIGURE 6 FRONT Note position of TORQUE SPECIFICATIONS fill hole to check oil level and fill. Screw Size Torque M10x 35 59 Ft/lb (80Nm) M8x30 29.5 Ft/lb (40Nm) M10x30 59 Ft/lb (80Nm) M5x20 7.4 Ft/lb (10Nm) revised 12/02 FORM NO.
WHEEL DRIVE SYSTEM REMOVAL OF THE CARBON BRUSH END-BELL HOUSING Important Service Note: The motor end-bell housing has (4) small cap screws on the housing end; these fasteners are not for securing the end- bell to the field housing. Do not remove, their purpose is to fix the brush ring to the end bell casting. Read instructions below to remove the brush end-bell from the motor housing.
REAR WHEEL SYSTEM BRAKE SHOE ASSEMBLY INSPECTION WARNING! Never work under machine without safety stands or blocking to support the machine. See Figure 1. Place wheel chokes on the opposite wheel to be serviced then loosen the hub retainer Bolt (A). Open the brush skirt-housing door and position a jack on the frame rail and lift machine 1- 2 inches off the floor and secure with blocking or safety stand.
REAR WHEEL SYSTEM INSTALLATION OF BRAKE SHOE ASSEMBLY See Figure 1. Start with the Brake Arm (D) attached to the Brake Equalizer Bar (J). Next install the Brake Shoe Assembly (H) and rear wheel hub assembly onto the axle shaft. See Figure 2A.
REAR WHEEL SYSTEM BRAKE CABLE ADJUSTMENT Block rear wheels then disconnect main battery cables (POS. & NEG.) and remove the battery box. Note: Use optional battery box lifting straps PN 56409067 to help lift the complete box without removing the batteries. See Figure 3.
Electrical components in this machine can be severely damaged if the batteries are not installed and connected properly. Batteries should be installed by Nilfisk-Advance or by a qualified electrician. 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.
ELECTRICAL SYSTEM DESCRIPTION OF THE BATTERY CONDITION INDICATORS The Battery Condition Indicator (17) will give an indication of the state of charge of the batteries. The battery condition indicator will retain the state-of-charge even if the key has been turned off. The state-of-charge indication is reset to full charge when the batteries have been recharged. It is also possible to choose between two different low voltage thresholds depending on whether maintenance free or standard batteries are being used (have qualified service engineer perform this selection*).
ELECTRICAL SYSTEM ACTUATOR DRIVE NUT ADJUSTMENT This manual section explains the steps for adjusting the drive nut settings for the machine’s two lift actuator motors. Reference the chart below to find the IN & OUT dimensional specification for the specific actuator motor needing adjustment. Part # Actuator Motor Drive Nut IN Position...
Page 57
ELECTRICAL SYSTEM Instructions for Scrub Brush Lift Actuator Drive Nut Adjustment FIGURE 4 See Figures 4 & 5. On a new scrub lift actuator motor remove (spin-off) the Drive Nut (A) and install the short compression Spring (C) onto the actuator (lead screw) shaft first.
ELECTRICAL SYSTEM CURTIS CONTROLLER DIAGNOSTICS Diagnostics Method A: Uses the machine’s control panel LED status display. FUNCTION OF THE SPEED CONTROLLER STATUS LIGHT AND DISPLAY The Curtis 1243 speed control will output a fault code if there is a problem associated with the speed control and wheel drive system. See Figure 6.
Page 59
ELECTRICAL SYSTEM STATUS LED FAULT CODES (TABLE 1) STATUS LIGHT EXPLANATION POSSIBLE CAUSE CODE DISPLAY No power or defective controller Solid On Controller or microprocessor fault Current sensor error 1. Controller defective. O OO Hardware failsafe error 1. Controller defective. O OOO M- fault or motor output short 1.
ELECTRICAL SYSTEM INSTALLATION CHECKOUT FOR THE CURTIS SPEED CONTROLLER SAFETY! The 1243 controller is inherently a high power device. When working around any battery powered vehicle, proper safety precautions should be taken. These include, but are not limited to: proper training, wearing eye protection, avoiding loose clothing and jewelry, and using insulated wrenches.
ELECTRICAL SYSTEM PROGRAMMER OPERATION The optional universal Curtis PMC handheld programmer / PART NUMBER 56409441 (Figure 7) allows you to program, test, and diagnose Curtis PMC 1243 controllers. The programmer is powered by the host 1243 controller, via a modular connector located in the front of the controller. FIGURE 7 A 4-line LCD display is presented in this...
Page 62
ELECTRICAL SYSTEM PROGRAMMER OPERATION (CONTINUED) The programmer is operated via an 8-key keypad. Three keys select operating modes (Program, Test, Diagnostics), two scroll the display up and down, and two change the values of selected parameters. The eighth key, the MORE INFO key, is used to display further information about selected items within any of the three standard modes.
Page 63
ELECTRICAL SYSTEM PROGRAMMER OPERATION (CONTINUED) The two CHANGE VALUE arrow keys are used to increase or decrease the value of a selected menu item. Like the SCROLL DISPLAY arrow keys, the CHANGE VALUE arrow keys can be pressed repeatedly or be held down. The longer a key is held, the faster the parameter changes.
Page 64
ELECTRICAL SYSTEM OPERATING MODES (CONTINUED) The MORE INFO key, when used in the Program mode, displays a bar graph along with the minimum and maximum values possible for the selected parameter. Parameters can be changed either from the main Program Menu or after the MORE INFO key has been pressed and the additional information is being displayed.
Page 65
ELECTRICAL SYSTEM OPERATING MODES (CONTINUED) DIAGNOSTICS MODE In the Diagnostics mode, accessed by pressing the DIAGNOSTICS key, currently active faults detected by the controller are displayed. The MORE INFO key, when used in the Diagnostics mode, causes additional information to be displayed about the selected item. The following is not a menu as such, but a list of possible messages you may see displayed when the programmer is operating in either of the Diagnostics modes.
Page 66
ELECTRICAL SYSTEM OPERATING MODES (CONTINUED) SPECIAL PROGRAM MODE The Special Program mode allows you to perform a variety of tasks, most of which are self-explanatory. Through the Special Program Menu, you can revert to earlier settings, save controller settings into the programmer memory, load the controller settings from the programmer into a controller, clear the controller’s diagnostic history, adjust the contrast of the programmer’s LCD display, select the language to be displayed by the programmer, and display basic information (model number, etc.) about the controller and the programmer.
Page 67
ELECTRICAL SYSTEM OPERATING MODES (CONTINUED) SPECIAL DIAGNOSTICS MODE In the Special Diagnostics mode, the controller’s diagnostic history file is displayed. This file includes a list of all faults observed and recorded by the controller since the history was last cleared. (Note: The maximum and minimum temperatures recorded by the controller are included in the Test Menu).
ELECTRICAL SYSTEM FUNCTIONAL OVERVIEW OF MAIN CONTROL BOARD The primary function of the main control board is to position the scrubbing brush(s) with respect to the floor surface using a lift actuator motor to maintain the correct brush pressure and current draw of the brush motor. When the normal scrub or heavy scrub switch is depressed this will lower the scrub deck to the operating position and by activating the foot pedal start the brush motor.
Page 69
ELECTRICAL SYSTEM MAIN CONTROLLER ERROR CODES (CONTINUED) Error Code Fault Description Troubleshooting Action Err07 Scrub motor overload Check for binding in rotation of brushes or improper brush lift actuator operation. 2. Check the negative supply cable at the brush motor for a wiring problem or improper modifications (this is a special cable and must be replaced with the original OEM PN 56410113).
Page 70
ELECTRICAL SYSTEM MAIN CONTROLLER ERROR CODES (CONTINUED) Error Code Fault Description Troubleshooting Action Err29 Vacuum contactor coil overload 1. Check for correct wiring. 2. Check coil resistance if below 183 ohms replace solenoid. Err30 Vacuum contactor coil severe overload 1. Same as error code 29. 2. Check for a short circuit in wiring or solenoid coil.
Page 71
ELECTRICAL SYSTEM ADDITIONAL ERROR CODE TROUBLESHOOTING INFORMATION When entering the main controller error fault recall mode and a fault Err01 or Err02 has been detected, the service person may see a second set of error codes. Refer to the chart below that shows the additional fault error codes by machine system. These secondary codes give information on a specific failure that is internal on the control board circuit.
ELECTRICAL SYSTEM SERVICE TEST MODE: To assist in the troubleshooting and servicing of the electrical system and related components on the 3800 / BR 1100 / 2042 and BR 1100C-XL scrubbers, a special test mode which allows independent control of the various outputs and monitoring of the various inputs has been incorporated. To enter the service test mode perform the following steps: Turn the master on/off key switch to the off position.
Page 73
ELECTRICAL SYSTEM SERVICE TEST MODE (CONTINUED) Input Indicators: See Figure 10 for button locations. Battery status red indicator (43): Speed control status signal. This is an output from the speed control to the main control unit that indicates the status of the speed control. Normally this indicator will blink every 5 seconds when the key is on.
Page 74
ELECTRICAL SYSTEM SERVICE TEST MODE (CONTINUED) Normal Scrub Switch (26): This switch is used to control the output to the pad/brush lift actuator. Pressing and releasing this switch will cycle the actuator output through 4 states. These are: 1 - output off, direction = up 2 - output on, direction = down 3 - output off, direction = down 4 - output on, direction = up...
Page 75
ELECTRICAL SYSTEM SERVICE TEST MODE (CONTINUED) Vacuum Switch (29): This switch is used to toggle the state of the vacuum motor. Pressing and releasing this switch will alternately turn the vacuum motor on and off. The indicator (37) provides the following status information: Off - Vacuum output is off and there is no current flow through the contactor coil and no vacuum motor current sensed.
ELECTRICAL SYSTEM MAIN CONTROL BOARD SPECIAL PROGRAM OPTIONS Scrub mode description: On the 3800 / BR 1100 / 2042 and BR 1100C-XL, both the normal and heavy scrub modes are independently programmable to have user adjustable or fixed scrub pressure settings. If the adjustable option is selected (factory default), the operator will be able to vary the amount of scrub pressure while operating the machine.
Page 77
ELECTRICAL SYSTEM SPECIAL PROGRAM OPTIONS (CONTINUED) To program the heavy scrub mode for user adjustable scrub pressure perform the following steps: Turn the master key switch off. Press and hold the heavy scrub button. Turn the master key switch on while continuing to hold the heavy scrub button until the status display shows “PA * “, where * is a number from 2 to 12.
Page 78
ELECTRICAL SYSTEM SPECIAL PROGRAM OPTIONS (CONTINUED) CURRENT DRAW OF SCRUB BRUSH MOTORS (TABLE 2) 36V* 3 HP 29.5 38.5 47.5 56.5 65.5 Amps Amps Amps Amps Amps Amps Amps Amps Amps Amps Amps Amps (Disc) (2) 1 HP (Cyl.) Amps Amps Amps Amps...
Page 79
ELECTRICAL SYSTEM SPECIAL PROGRAM OPTIONS (CONTINUED) Enabling Or Disabling The Vacuum Automatic Shutoff Option: FACTORY DEFAULT: ON The 3800 / BR 1100 / 2042 and BR 1100C-XL is equipped with a feature that will automatically shut off the vacuum and scrub systems and display “FULL”...
Page 80
ELECTRICAL SYSTEM SPECIAL PROGRAM OPTIONS (CONTINUED) Brush Type Selection: FACTORY DEFAULT: cyl (cylindrical), disc (disc) The 3800 / BR 1100 can be equipped with two different scrub deck options. One uses cylindrical scrub brushes and the other uses standard disc type scrub brushes.
Page 89
56409569 LIFT SLING KIT For Advance Hydro-Retriever™ 3800 / Nilfisk BR 1000, BR 1100 CONTENTS OF KIT ITEM REF. NO. DESCRIPTION 56040521 Instruction Sheet 56409571 Lift Bar 56015656 Decal, Warning Lifting 56409570 Cable 56491726 Bushing 56002168 1/2 Flat Washer 56003022 1/2-13 x 1-1/4 Loc Bolt Refer to Figure 2 when ordering replacement parts.
Page 90
Note: Use a crane or hoist rated for at least 3,000 lbs (1,350 kg) when lifting. The lift sling has a maximum capacity of 2,800 lbs (1,270 kg). Make sure that no one is present on or below the machine while lifting. Lift, swing and lower slowly.
Page 91
56407236 HEADLIGHT KIT Advance Hydro-Retriever™ 3200 / Hydro-Retriever™ 3800 (model 56410000) Nilfisk BR 850 / BR 1100 CONTENTS OF KIT ITEM PART NO. DESCRIPTION 56040637 Instruction Sheet 56409239 Headlight 56409557 Headlight Guard 56003179 Scr, Hex Thd To Hd M8-1.25 x 20mm 56003389 Nut, Hex Nyl Loc M8-1.25 56321540...
Page 111
See Figure 2. Tip the recovery tank back forward and remove the Left Rear Recovery Tank Cover (B). The Strainer (C) for the Extended Scrub Kit is shipped loose and needs to be installed prior to installing the assembly on the machine. It only needs to be hand tightened onto the elbow.
Page 113
EXTENDED SCRUB KIT Item Ref. No. Description 56002005 Scr, Pan Phil 6-32 x .62 56002830 Nut, Hex Nyl Loc 6-32 56002836 Nut, Hex Nyl Loc SS 10-24 56002896 Scr, Pan Phil SS 10-24 x .62 56002898 Scr, Pan Phil SS 10-24 x1.00 56002900 Scr, Pan Phil SS 10-24 x .50 56002916...
Page 115
See Figure 2. Empty the recovery tank and tip back as shown. Route Cord Assembly (3) along-side the Vacuum Hose (B) in the front of the recovery tank and plug it into the Beacon Assembly Connector (C). Bring Cord Assembly (3) out through the same opening at the bottom of the recovery tank mount weldment that the vacuum hoses are routed through.
Need help?
Do you have a question about the Hydro-Retriever 3800 and is the answer not in the manual?
Questions and answers