Related Manuals for Nilfisk-Advance SC900-28D
Summary of Contents for Nilfisk-Advance SC900-28D
- Page 1 SC900 Service Manual Advance Model Numbers: 56115201 SC900-28D 56115202 SC900-34D 56115203 SC900-32C English 07/2016 Form No. 56043175...
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Page 2: Table Of Contents
Service Manual – SC900 Contents Contents 03 - General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 General Machine Description Service Manual Purpose and Application Other Reference Manuals and Information Sources... - Page 3 Service Manual – SC900 Contents Drive Handle Switches and Harness Hour Meter Drive Handle Reassembly Notes Batteries Specifications Connector Pinouts TrackClean Connector EcoFlex Connector Operator’s Handle Connector Drive Controller Connector Wiring Diagram Harness Diagram 30 - Solution System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 Functional Description Non-Detergent Models Detergent Models...
- Page 4 Service Manual – SC900 Contents 38 - Squeegee System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68 Functional Description Squeegee Maintenance and Adjustment...
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Page 5: 03 - General Information
The SC900-28D has a 28" disc deck. The SC900- 34D has a 34" disc deck. The SC900-32C has a 32" cylindrical deck. -
Page 6: Modifications
Service Manual – SC900 03 - General Information 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 nameplate contains important identification information which will be... -
Page 7: Safety
Service Manual – SC900 03 - General Information Safety Symbols It is important for you to read and understand this manual The information it contains relates to protecting your safety and preventing problems The symbols below are used to help you recognize this information DANGER: Indicates a potentially hazardous situation which, if not avoided, will result in death or serious injury. -
Page 8: Property Damage Messages
Service Manual – SC900 03 - General Information Property Damage Messages − Storage and operation temperature must be above 32°F (0°C) and a humidity between 30% and 95%, non-condensing. − Before use, all doors and hoods should be properly latched. −... -
Page 9: Lifting Or Transporting The Machine
Service Manual – SC900 03 - General Information Lifting or Transporting the Machine CAUTION: Never work under a machine without safety stands or blocks to support the machine. − Drain the recovery and solution tanks to prevent sloshing water from unbalancing the machine. -
Page 10: Technical Specifications
Service Manual – SC900 03 - General Information Technical Specifications Model SC900 28D SC900 34D SC900 32C Model No. 56115201 56115202 56115203 Voltage, Batteries 36V (6 x 6V) Battery Capacity 310 Ah Protection Grade S P L IEC 60335-2-72: 2002 Amend. 1:2005, 66.4 dB(A)/20µPa 66.4 dB(A)/20µPa 68.8 dB(A)/20µPa... -
Page 11: Know Your Machine - Major Components
Service Manual – SC900 03 - General Information Know Your Machine — Major components: Recovery Cover Recovery Tank Control Handle Solution Tank Disk Deck Cylindrical Deck Chassis & Drive Squeegee... -
Page 12: Maintenance Schedule
Service Manual – SC900 03 - General Information Maintenance Schedule Maintenance intervals given are for average operating conditions Machines used in severe operational environments may require service more often Interval Maintenance Item Daily Weekly Monthly Yearly • Charge Batteries • Check/Clean Tanks &... -
Page 13: 14 - Wheel System, Non-Traction
Service Manual – SC900 14 - Wheel System, Non-Traction Functional Description The SC900 machine is propelled by the drive wheels The rear caster wheels add stability and ease of turning Caster Wheels Removal and Installation WARNING: Never work under machine without safety stands or blocking to support the machine. -
Page 14: 20 - Wheel System, Traction
Service Manual – SC900 20 - Wheel System, Traction Functional Description The SC900 machine is driven by an electrically Control Handle powered transaxle The transaxle is an open differential powered by a 1/2 hp, permanent magnet, 36V motor A Curtis 1228 solid state speed controller regulates the speed and direction of the wheel drive motor The motor speed controller is located in the... -
Page 15: Drive Motor Pwm Function
Service Manual – SC900 20 - Wheel System, Traction Drive Motor PWM Function The drive motor is controlled from a Curtis 1228 controller, which is 1-Cycle a pulse-width-modulation speed controller designed specifically for (15kHz) permanent magnet DC motors Pulse-width-Modulation (PWM) is a form of motor speed control that alters the power to a motor by rapidly turning the power on and off The ratio (also called “duty cycle”) between the 25% PWM Duty Cycle... -
Page 16: Circuit Description (Idle)
Service Manual – SC900 20 - Wheel System, Traction Circuit Description (Idle) 36 VDC Main battery power is always present at the speed controller Key Switch from the battery, but the controller remains inhibited until the KSI Closed input is brought to positive battery voltage When the main key switch is closed, positive battery power is provided to the KSI input on the... -
Page 17: Circuit Description (Driving)
Service Manual – SC900 20 - Wheel System, Traction Circuit Description (Driving) 36 VDC When any of the three Go switches is closed, it connects the Pot-Lo Key Switch output (0V) from the controller back to the Throttle-Pot input The drive Closed controller sees this as a full-throttle command and initiates the drive... -
Page 18: Troubleshooting
Service Manual – SC900 20 - Wheel System, Traction Troubleshooting The primary tool for troubleshooting the drive controller is the Curtis handheld programmer This tool interfaces with the drive controller to report back error codes, control status, and other functions The Curtis manual will describe this in greater detail, but the primary troubleshooting functions are under the Monitor and Diagnostics menus... - Page 19 Service Manual – SC900 20 - Wheel System, Traction Status Led Fault Codes Code Name / Explanation Possible Cause • Main contactor welded or stuck open MAIN CONT FLTS • Main contactor driver fault Main contactor fault • Brake coil resistance too high • Main contactor driver failed closed MAIN ON FAULT Main contactor driver On fault...
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Page 20: Removal And Installation
Service Manual – SC900 20 - Wheel System, Traction Removal and Installation Drive Controller WARNING: Unswitched battery power is present at the drive controller. Disconnect the battery connector before servicing the machine. Note: Drive controllers are factory pre-programmed for the specific machine. Use only factory authorized replacement controllers. -
Page 21: Wheels
Service Manual – SC900 20 - Wheel System, Traction Wheels WARNING: To avoid unexpected movement, disconnect the battery connector before servicing the machine. − Never work under the machine without safety stands or blocking to support the machine. − To avoid instability of the lifted machine, block the rear (caster) wheels so that the weight of the machine is not on the caster wheels, which can pivot unexpectedly. -
Page 22: Drive Motor
Service Manual – SC900 20 - Wheel System, Traction Drive Motor WARNING: To avoid unexpected movement, disconnect the battery connector before servicing the machine. − Never work under the machine without safety stands or blocking to support the machine. − To avoid instability of the lifted machine, block the rear (caster) wheels so that the weight of the machine is not on the caster wheels, which can pivot unexpectedly. -
Page 23: Motor Brushes
Service Manual – SC900 20 - Wheel System, Traction Motor Brushes It is possible to replace the motor brushes without removing the motor from the transaxle, if you wish This is a decision you should make before you start, however, because one method requires removing the right wheel and the other method removes the left wheel Replacing the brushes is a relatively easy task, with the exception being the access to the upper-front brush This procedure is written from the standpoint of leaving the motor in place... -
Page 24: Transaxle
Service Manual – SC900 20 - Wheel System, Traction Transaxle WARNING: To avoid unexpected movement, disconnect the battery connector before servicing the machine. − Never work under the machine without safety stands or blocking to support the machine. − To avoid instability of the lifted machine, block the rear (caster) wheels so that the weight of the machine is not on the caster wheels, which can pivot unexpectedly. - Page 25 Service Manual – SC900 20 - Wheel System, Traction Remove the three lug nuts that secure each wheel to the transaxle, and remove both wheels Remove the ground wire (A) from the transaxle 10 Disconnect the motor connector (B) 11 To prevent the transaxle from falling to the floor, place supports or cushioning under the transaxle. 12 Remove the 4 bolts (C) and nuts (D) securing the right and left retaining plates (E) to the frame •...
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Page 26: Specifications
Service Manual – SC900 20 - Wheel System, Traction Specifications Shop Measurements Drive Controller Connector Pin Terminal Wire Color Circuit Voltage (DC Volts to GND) Pot-Hi White 5 Volt bias to the speed limit pot 4.95 V Thrtl Pot Blue Input from the Go switches 4.95 V @ Off 0 V @ On... -
Page 27: Special Tools
Service Manual – SC900 20 - Wheel System, Traction Special Tools Curtis Programmer The Curtis 1313, 1311, or 1307 generation Programmers may be used to display drive controller error codes and program the drive controller The programmer presents complete diagnostic information in plain language without codes to decipher Faults are displayed in the Diagnostic Menu, and the status of the controller inputs/outputs is displayed in the Test Menu The handheld programmer can also be used to access the drive controller’s diagnostic history file. -
Page 28: 24 - Electrical System
Service Manual – SC900 24 - Electrical System Functional Description EcoFlex Control Battery Detergent Charger Pump Electrical Battery Disconnect The SC900 machine is powered using six, 6-volt batteries connected in series, for a total system nominal voltage of 36 volts To protect the batteries from over discharge, the system is protected with 150 A Fuse... - Page 29 Service Manual – SC900 24 - Electrical System On the operator’s handle is a combination battery indicator and hour meter The hour meter increments whenever the scrub system is active The LED bar graph on the battery indicator represents the battery charge The hour meter (battery indicator) also serves as a low-voltage cutout for the scrub system When the battery voltage is above the...
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Page 30: Troubleshooting
Service Manual – SC900 24 - Electrical System Troubleshooting The SC900 machine architecture is based on a hybrid of “Relay Logic” with limited control logic from the Curtis Drive Controller This causes a lot of the system troubleshooting to be interrelated between the standard relay-logic components and the drive system controller Most of the troubleshooting scenarios will be listed here, unless they are specific solely to the drive controller. -
Page 31: Battery Testing
Service Manual – SC900 24 - Electrical System Problem Cause Notes & Correction No Scrub system, but K1 circuit fault The K1 circuit controls all of the scrub functions, and is related drive and vacuum to the low-voltage cutout feature, which is controlled by the operational. -
Page 32: Maintenance And Adjustment
Service Manual – SC900 24 - Electrical System Maintenance and Adjustment Setting Onboard Charger Battery Profile The machine may be equipped with the optional onboard battery charger If the charger is just being installed, or the batteries have been replaced with a different type, it will be necessary to program the charger to properly charge the batteries according to their type Batteries operate on chemical reactions that produce an electrical charge Charging a battery reverses these chemical reactions so they can produce power again Because these chemical reactions are complex, their... -
Page 33: Removal And Installation
Service Manual – SC900 24 - Electrical System Removal and Installation Electrical Bay Cover CAUTION: Risk of Arc flash. The electrical bay contains exposed high-amperage electrical components. Take care to not allow tools to come in contact with exposed components. The electrical bay contains the majority of the machine’s electrical components The cover protects the components from debris and... -
Page 34: Drive Handle
Service Manual – SC900 24 - Electrical System Drive Handle Removing and disassembling the drive handle is a prerequisite to other procedures for servicing the hour meter, drive switches, and potentiometer Using a 14mm socket and extension, unscrew the 5 screws (A) that secure the drive handle to the machine •... -
Page 35: Switches And Harness
Service Manual – SC900 24 - Electrical System Switches and Harness Key Switch Hour Meter Go Switch Go Switch Setscrew Reverse Go Switch Switch Disconnect the 2 wires from the key switch, and the connector from the hour meter If the new harness does not contain a potentiometer, then free up the wires and cut them at the longest length you can (You can trim their length later ) If the new harness does contain a potentiometer, then loosen the setscrew on the dial, transfer the dial to the new potentiometer, and remove the old potentiometer from the handle... -
Page 36: Hour Meter
Service Manual – SC900 24 - Electrical System Hour Meter When replacing the hour meter, if possible, record the previous hours for maintenance tracking The hour meter can neither be reset nor changed, but the previous hour meter value should be recorded in an equipment log Disconnect the wiring plug (D) from the hour meter... - Page 37 Service Manual – SC900 24 - Electrical System Place the main handle face-down, and inspect to make sure: • All 6 springs are in place • All wires are in their grooves/clips • All switches are in place Feed the harness connector through the back handle, and carefully align the two handle halves Install all 11 screws Inspect the movement of the drive switches and speed pot to make sure they move freely Key Switch...
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Page 38: Batteries
Service Manual – SC900 24 - Electrical System Batteries CAUTION: 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 the batteries through openings in the battery caps. Do not smoke while servicing the batteries. -
Page 39: Specifications
Service Manual – SC900 24 - Electrical System Specifications Connector Pinouts TrackClean Connector Pin # Name Wire Color, ID Interlock VIO, W093 Interlock BRN/VIO, W026 Batt+ RED, W040 Vacuum GRAY, W035 Scrub VIO/WHT, W031 Drive PINK/BLUE, W023 Key Switch BRN/VIO, W026 Batt- BLACK, W030 EcoFlex Connector... -
Page 40: Drive Controller Connector
Service Manual – SC900 24 - Electrical System Drive Controller Connector Pin # Name Wire Color, ID Pot High WHT, W019 Throttle Pot BLU, W059 VIO, W011 Brake- PNK-BLU, W023 Pot Low YEL, W058 Brake+ PNK, W137 Reverse GRY-VIO, W018 Speed Pot ORN, W020... -
Page 41: Wiring Diagram
Service Manual – SC900 24 - Electrical System Drawing: 56115276 Rev E Wiring Diagram CONFIDENTIAL THIS DRAWING AND THE DESIGN REPRESENTED HEREON IS THE PROPERTY OF NILFISK-ADVANCE, INC., PLYMOUTH, MINNESOTA AND IT HAS BEEN ISSUED WITH THE UNDERSTANDING THAT IT WILL NOT BE REPRO- DUCED NOR COPIED NOR USED FOR ANY PURPOSE OTHER THAN FOR WHICH IT WAS ISSUED AND RECIPIENT AGREES TO RETURN IT UPON REQUEST. -
Page 42: Harness Diagram
Service Manual – SC900 24 - Electrical System Drawing: 56115277 Rev E Harness Diagram CONFIDENTIAL THIS DRAWING AND THE DESIGN REPRESENTED HERON IS THE PROPERTY OF NILFISK INC., BROOKLYN PARK, MINNESOTA AND IT HAS BEEN ISSUED WITH THE UNDERSTANDING THAT IT WILL NOT BE REPRO- DUCED NOR COPIED NOR USED FOR ANY PURPOSE OTHER THAN FOR WHICH IT WAS ISSUED AND RECIPIENT AGREES TO RETURN IT UPON REQUEST. -
Page 43: 30 - Solution System
Service Manual – SC900 30 - Solution System Functional Description The SC900 machine has a 29 5-gallon (112 liter) solution tank incorporated into the main body of the machine. A clear tube on the right side of the machine below the fill cap serves as a water level indicator for the tank At the outlet of the solution tank, under the machine, is a manual shutoff valve followed by a serviceable solution filter that prevents debris from entering the rest of the solution system. -
Page 44: Detergent Models
Service Manual – SC900 30 - Solution System Detergent Models 36 VDC Machines that have on-board detergent mixing (EcoFlex Models) have a solution control circuit board, detergent pump, SW, SPST KEY and detergent bottle From an enabling CURTIS 1228 standpoint, the detergent module (circuit board) has the same prerequisite control PNK/BLU BRAKE+... -
Page 45: Troubleshooting
Service Manual – SC900 30 - Solution System Troubleshooting Scrub System, General One of the first things about troubleshooting any part of the scrub system, is to make the scrub system active, so you can make observations It is possible to active the scrub system without the machine moving, and without the brushes contacting the floor. -
Page 46: No Solution Flow
Service Manual – SC900 30 - Solution System No Solution Flow • Make sure the solution shutoff valve is open • For a non-EcoFlex machine, make sure the solution cable is connected to the valve and moves through its full cycle as the solution lever is moved •... -
Page 47: Removal And Installation
Service Manual – SC900 30 - Solution System Removal and Installation Scrub Skirt Removing the scrub skirt (B) allows easy access to the scrub deck components It is held in place with 4 screws (A) on the sides, and a tab in the center Using a 3mm hex key, remove the 4 screws and washers (A) Slide the skirt toward the front to free the center... -
Page 48: Solution Filter
Service Manual – SC900 30 - Solution System Solution Filter Shutoff the solution valve (B) Unscrew the solution filter (A) There will likely still be some liquid in the line that will spill out Clean the filter bowl and screen (C) Note that the screen is not removable from the bowl... -
Page 49: Solution Control Panel And Cable
Service Manual – SC900 30 - Solution System Solution Control Panel and Cable The solution control panel is located to the right of the operator’s handle, and the cable passes down through the machine to the solution shutoff valve Remove the cable clamp (A) Remove the screw, nut, and washer (B) that secures the cable to the solution shutoff valve... -
Page 50: Ecoflex Control Panel
Service Manual – SC900 30 - Solution System EcoFlex Control Panel For machines equipped with the option EcoFlex system, the standard solution control panel is replaced with the EcoFlex control panel Remove the 4 screws that secure the control panel to the solution tank, and lift the panel away from the tank Disconnect the electrical connector, and remove the control panel... -
Page 51: 34 - Scrub System, Disc
Service Manual – SC900 34 - Scrub System, Disc Functional Description The scrub system consists of a scrub deck that is raised and lowered with a foot pedal at the rear of the machine The two counter rotating brushes are driven by independent motors with integral speed reduction gear boxes The scrub deck is supported by a parallelogram linkage to maintain level with the floor at any... -
Page 52: Circuit Overview
Service Manual – SC900 34 - Scrub System, Disc Circuit Overview 36 VDC The brush circuit has several prerequisites to operate All of the following must to be true for the brushes to run: SW, SPST KEY CURTIS 1228 • Key switch on •... -
Page 53: Troubleshooting
Service Manual – SC900 34 - Scrub System, Disc Troubleshooting Scrub System, General One of the first things about troubleshooting any part of the scrub system, is to make the scrub system active, so you can make observations It is possible to active the scrub system without the machine moving, and without the brushes contacting the floor. -
Page 54: One Brush Not Working
Service Manual – SC900 34 - Scrub System, Disc One Brush Not Working If only one brush is not working, you know it is not related to the drive controller, nor the power relay (K2) The problem is isolated between the 25 amp circuit breaker and the motor •... -
Page 55: Removal And Installation
Service Manual – SC900 34 - Scrub System, Disc Removal and Installation Scrub Skirt Removing the scrub skirt (B) allows easy access to the scrub deck components It is held in place with 4 screws (A) on the sides, and a tab in the center Using a 3mm hex key, remove the 4 screws and washers (A) Slide the skirt toward the front to free the center... -
Page 56: Brush Motor Brushes
Service Manual – SC900 34 - Scrub System, Disc Brush Motor Brushes Unless you need to remove the motor(s), it is easier to complete this procedure with the motor(s) installed in the machine As long as you disconnected the main battery connector, you don’t even need to disconnect the motor connector But if desired, remove the Scrub Brush Motor described on page 55... - Page 57 Service Manual – SC900 34 - Scrub System, Disc 10 Remove the terminal screw (J) from the brush wire 11 Pull the brush (F) outward and remove it from the brush holder (G) 12 While holding the coil spring out of the way, insert the new brush into the brush holder Note that the brush wire is away from the phenolic base 13 Re-secure the brush wire to the contact with the screw...
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Page 58: Specifications
Service Manual – SC900 34 - Scrub System, Disc Specifications Parameter Range 118 Ω K2 Brush Relay Coil Resistance... -
Page 59: 34 - Scrub System, Cylindrical
Service Manual – SC900 34 - Scrub System, Cylindrical Functional Description The scrub system consists of a scrub deck that is raised and lowered with a foot pedal at the rear of the machine The two counter rotating cylindrical brushes are driven by independent motors and belt drives The scrub deck is supported by a parallelogram linkage to maintain level with the floor at any... -
Page 60: Circuit Overview
Service Manual – SC900 34 - Scrub System, Cylindrical Circuit Overview 36 VDC The brush circuit has several prerequisites to operate All of the following must to be true for the brushes to run: SW, SPST KEY CURTIS 1228 • Key switch on •... -
Page 61: Troubleshooting
Service Manual – SC900 34 - Scrub System, Cylindrical Troubleshooting Scrub System, General One of the first things about troubleshooting any part of the scrub system, is to make the scrub system active, so you can make observations It is possible to active the scrub system without the machine moving, and without the brushes contacting the floor. -
Page 62: One Brush Not Working
Service Manual – SC900 34 - Scrub System, Cylindrical One Brush Not Working If only one brush is not working, you know it is not related to the drive controller, nor the power relay (K2) The problem is isolated between the 25 amp circuit breaker and the motor •... -
Page 63: Removal And Installation
Service Manual – SC900 34 - Scrub System, Cylindrical Removal and Installation Scrub Skirt Removing the scrub skirt (B) allows easy access to the scrub deck components It is held in place with 4 screws (A) on the sides, and a tab in the center Using a 3mm hex key, remove the 4 screws and washers (A) Slide the skirt toward the front to free the center... -
Page 64: Brush Motor Brushes
Service Manual – SC900 34 - Scrub System, Cylindrical Brush Motor Brushes Drain the recovery tank and disconnect the main battery connector Remove the Scrub Skirt described on page 63 Remove the Scrub Brush Motor described on page 63 Remove both scrub brushes Important: Using a marker or paint pen, mark the alignment (A) of the top and bottom end caps with respect to the motor housing (D) - Page 65 Service Manual – SC900 34 - Scrub System, Cylindrical Note: When placing the coil spring and brush back into position, note the direction the coil spring faces so that it uncoils properly. Note: You will need 4 temporary retaining pins, such as straightened out paperclips.
- Page 66 Service Manual – SC900 34 - Scrub System, Cylindrical Note: The wave washer (J) fits between the rotor bearing and the end cap. When placing it in the end cap before assembly, note that the fingers (K) face toward the bearing. The picture to the right is only for reference.
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Page 67: Specifications
Service Manual – SC900 34 - Scrub System, Cylindrical Specifications Parameter Range 118 Ω K2 Brush Relay Coil Resistance... -
Page 68: 38 - Squeegee System
Service Manual – SC900 38 - Squeegee System Functional Description The squeegee tool collects wastewater from the floor for the recovery system to lift the water into the recovery tank. The floor squeegee is wider than the swath of the scrub deck to ensure collection of all wastewater from the perimeter of the scrubbing area The squeegee also pivots to the side to permit operation near walls and... -
Page 69: Maintenance And Adjustment
38 - Squeegee System Service Manual – SC900 Maintenance and Adjustment Squeegee Blade Cleaning and Inspection Periodically clean and inspect the squeegee assembly and blades Loosen the two thumb nuts (A), and slide the squeegee assembly off the lift mechanism Clean the squeegee blades (B&C) and suction area between the blades (D) with soap and water... -
Page 70: Removal And Installation
38 - Squeegee System Service Manual – SC900 Removal and Installation Squeegee Blade Replacement Remove the squeegee assembly from the machine Release the rear (main) squeegee latch (B) by pushing back on the latch release (A) and pulling the latch outward Remove the tension strap (C) from the end hooks, and remove the squeegee blade (D) The squeegee blade has 4 working edges Turn... -
Page 71: 40-Recovery System
Service Manual – SC900 40-Recovery System Functional Description Recovery The recovery system extracts wastewater from Tank the floor and deposits it into the on-board Suction Inlet recovery tank Vacuum Motor and Recovery Tank The vacuum motor generates airflow through the recovery tank and suction hose to the squeegee The high velocity air at the squeegee pulls the wastewater off the floor and up through the... -
Page 72: Circuit Overview
Service Manual – SC900 40-Recovery System Circuit Overview 36 VDC Unlike other machine functions, the vacuum circuit is not dependant on the drive function nor the low voltage cutout of the hour meter The only prerequisite for the vacuum circuit is SW, SPST KEY TELEMATICS the main key switch... -
Page 73: Vacuum Suction Test
Service Manual – SC900 40-Recovery System Vacuum Suction Test Use this procedure to verify that the vacuum system is performing within factory specifications. This procedure can also be used to isolate the cause of a vacuum problem between a clog or leak It is a two-part procedure that verifies both static pressure and flow rate. -
Page 74: Removal And Installation
Service Manual – SC900 40-Recovery System Removal and Installation Vacuum Motor Drain the recovery tank and move it to the open position Disconnect the vacuum motor cable connector (C) Loosen the hose clamp (A) on the exhaust hose, and remove the hose Remove the three screws and washers (B) that secure the vacuum retaining plate (D), and remove the plate and motor Take care... -
Page 75: Vacuum Motor Brushes
Service Manual – SC900 40-Recovery System Vacuum Motor Brushes Remove the Vacuum Motor described on page 74 Remove the two screws (A) that secure the motor cover to the motor, and remove the cover Remove the two screws (C) that secure the contact strap (D), and remove the strap Take care to not bend the wire any more than necessary... -
Page 76: Specifications
Service Manual – SC900 40-Recovery System Specifications Parameter Range 105 Ω K3 Vac Relay Coil Resistance Special Tools Vacuum Pressure Gauge 1-inch open hole adapter part number 56205281 Fabricated from PVC... -
Page 77: 90 - Options And Accessories
Service Manual – SC900 90 - Options and Accessories 90 - Options and Accessories The SC900 machine may be equipped with optional accessories depending on the needs of the owner Some of these accessories don’t directly impact servicing the machine, but some may So it is good to know what accessories you may encounter and how they impact the machine Onboard Charger The onboard battery charger is located in front of the battery bay The charger connects directly to the...