Aquamatic Selectric - Southeastern Equipment...• If water does not come out of the accessory port, check for a kinked hose between the pump and the solution tank. If the hose is

Revised 8/93 Form Number 56043015

Aquamatic Selectric™

SERVICE MANUALAdvance MODEL 56263500

Aquamatic Selectric™ Service Manual

TABLE OF CONTENTS________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

General Service InstructionsBelt ...................................................................................................................5Bladder.............................................................................................................8Brush................................................................................................................5Brush Drive Motor ............................................................................................5Brush Relay .....................................................................................................2Circuit Breakers ...............................................................................................2Control Handle Switches..................................................................................7Delay Relay (K1) ..............................................................................................2Differential ....................................................................................................... 2Electrical Component Identification..................................................................1Electronic Control Box .................................................................................... 5Rectifier ............................................................................................................2Solenoid Valve ................................................................................................ 5Solution Pump................................................................................................. 5Vacuum Motor ................................................................................................. 2Wheel Drive Motor .......................................................................................... 2Wheel Drive Relay .......................................................................................... 2Wheel Drive Speed Controller .........................................................................2

TroubleshootingBrush Drive System Troubleshooting............................................................. 11Solution System Troubleshooting ....................................................................9Wheel Drive System Troubleshooting ............................................................13


GENERAL SERVICE INSTRUCTIONS

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ELECTRICAL COMPONENT IDENTIFICATION

1 Brush Circuit Breaker (6 amp)2 Wheel Drive Circuit Breaker (2 amp)3 Vacuum Circuit Breaker (13 amp)4 Delay Relay (K1)5 Wheel Drive Speed Controller6 Rectifier7 Wheel Drive Relay8 Brush Relay9 Electronic Control Box10 Wheel Drive Motor11 Solution Pressure Switch12 Brush Drive Motor13 Solution Pump14 Solenoid Valve

10

9

Brush Platform12

13

11

14

FRONT

8

7

6

4 5 3 2 1

FIGURE 1

FIGURE 2

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GENERAL SERVICE INSTRUCTIONS________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

WHEEL DRIVE, VACUUM MOTOR & ELECTRICAL CONTROLS

Note: The components listed below are mounted in the machine frame. See Brush Drive Motor, SolutionPump & Solenoid Valve for service instructions on parts located on the brush platform.

To service... Follow steps...circuit breakers 1 - 3differential 1 - 4rectifier 1 - 6relays 1 - 6vacuum motor 1 - 6wheel drive motor 1 - 7wheel drive speed controller 1 - 6

1 Drain both the solution and recovery tanks and put the drive pedal in the OFF (up) position.

2 Tip the machine up on its nose.

3 See Figure 3. Remove the (4) “A” screws and rear cover “B” from the bottom of the machine.

A

B

FIGURE 3

2



4 See Figure 4. Remove drive belt “E” from the drive motor pulley, remove the (4) “F” nuts and lift differen-tial “G” out of the frame.

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WHEEL DRIVE, VACUUM MOTOR & ELECTRICAL CONTROLS (continued)

FIGURE 4

MN

P

E

F

G

3



5 See Figure 5. Loosen the “H” and “I” hose clamps, pull the hoses off of pickup shoe “J” and vacuummotor “K”.

6 Remove the “L” bolts, disconnect the vacuum motor wiring (cut wire ties straps, if necessary) and removethe vacuum motor from the machine.

7 See Figure 4. Remove the (4) “M” bolts, disconnect the wheel drive motor wiring (cut wire tie straps, ifnecessary) and remove the wheel drive motor from the machine.

• If the drive belt slips after reinstalling the wheel drive motor, loosen the “N” bolts and move plate “P” down1/8 inch. Then test machine for proper operation and repeat adjustment if necessary.

FIGURE 5

L

K

H

L

I

J

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WHEEL DRIVE, VACUUM MOTOR & ELECTRICAL CONTROLS (continued)

4



BRUSH DRIVE MOTOR, SOLUTION PUMP & SOLENOID VALVE

Follow the steps below to service the Brush, the Belt, the Brush Drive Motor, the Solution Pump, the SolenoidValve or the Electronic Control Box.

Note: See Wheel Drive, Vacuum Motor & Electrical Controls section for service instructions on parts mountedin the machine frame.

1 Drain both the solution and recovery tanks. Then tip the machine up on its nose.

2 See Figure 6. Remove the “A” screws securing belt guard “B” and remove the guard from the frame.

3 Place the brush lift pedal in the DOWN position. Then pull the brush platform away from the frame, as faras the lift cable will allow.

4 Remove nut “C” and lift cable “D”.

5 Turn the front caster wheel to the side and pull the brush platform away from the frame.

6 See Figure 7. Loosen lock nut “E” and turn bolt “F” counter-clockwise to loosen the belt tension. Thenremove belt “G” from the motor pulley.

A

B

Brush Platform

C

D FIGURE 6

5



7 See Figure 8. Pry belt cover “H” off the end of the brush housing.

FIGURE 7

E

H

Brush

Brush Housing

G

8 Pull the brush and the belt out of the brush housing.

FIGURE 8Number Visible onBearing Blocks

Brush Housing

G

Follow steps 6 - 8 in reverse order to install the new brush or belt.

Note: Always install the brush in the brush housing so the number “1” on both bearing blocks is visible fromthe bottom of the machine (see Figure 8).

F

H

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BRUSH DRIVE MOTOR, SOLUTION PUMP & SOLENOID VALVE (continued)

6



CONTROL HANDLE SWITCHES

Follow the instructions below to service the (2) switches in the top of the control handle. These switches,which are operated by the levers on the handle, control the brush drive and the wheel drive motors.

1 Remove the (6) screws from the metal cover on the left side of the control handle.

2 Disconnect the 2 sets of Red/Green wires and the 2 sets of White/Green wires at their spade connectors.Then cut the plastic tie straps from the upper portion of these wires.

3 See Figure 9. Remove the (2) “A” screws and (2) “B” nuts and slide the switch box to the left and out ofthe handle.

4 Gently pry box halves “C” and “D” apart, using a flat blade screw driver.

5 Replace parts as required and follow steps in reverse order to reassemble.

FIGURE 9

C

A

B

D

7



BLADDER MAINTENANCE AND REMOVAL

The bladder should be removed at least once a year (more often under heavy usage) for a thorough cleaning.To remove the bladder...

1 Unplug the power cord and empty both tanks.

2 See Figure 10. Pull the hoses off dome lid “H” and remove the dome from the machine.

3 Lift cover “J” and remove the (4) “B” nuts.

4 Remove plate “A” and carefully pull the bladder up and off of the (4) “C” screws.

5 Working through the rear tank opening, remove the (4) sets of hardware items “D” nuts, “E” clips, “F”washers and “G” screws.

6 Collapse the bladder and pull it through the front tank opening.

7 Remove the recovery tank drain plug and flush out the inside of the tank thoroughly.

8 Clean the bladder inside and out, then follow the steps in reverse order to reinstall it.

C

BA

H

JG

F

DE

FIGURE 10

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TROUBLESHOOTING________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________

NO SOLUTION FROM NOZZLE

Before troubleshooting...

• make sure that there is at least 6 inches of water in the solution tank.

• check for solution with the drive levers (on the control handle) UP and the machine moving forward.Solution cannot be dispensed from the nozzle when the machine is stopped or moving backward.

• make sure that the solution symbol on the control panel is lit. If not, press the solution portion of the touchpad to turn it on.

• make sure that the solution valve (on the back of the machine) is open.

• make sure that the solution filter (on the back of the machine) is clean.

• make sure that the solution nozzle (in front of the brush) is not clogged.

1 Remove the quick disconnect socket from the accessory port on the right side of the machine.

• Turn the main switch ON for 30 seconds, then turn it OFF.

• If water comes out of the accessory port, go to step 2.

• If water does not come out of the accessory port, check for a kinked hose between the pump and thesolution tank. If the hose is not kinked, repair or replace the pump.

2 Reinstall the accessory socket, turn the main switch back ON and pull the drive levers UP.

• Check for solution flow out of the nozzle (in front of the brush).

• If you now have flow from the nozzle, the problem was caused by an air lock in the solution lines. Theair was purged by running the pump with the quick disconnect socket removed.

• If you DO NOT have flow from the nozzle, go to step 3.

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TROUBLESHOOTING

3 Disconnect the (2) Red solenoid valve wires from the Yellow and the Black/Yellow wires in the machinewiring harness.

Note: The solenoid valve is mounted on top of the brush platform. (See Brush Drive Motor, Solution Pump &Solenoid Valve).

DANGER!USE EXTREME CAUTION WHEN TESTING A LIVE ELECTRICAL CIRCUIT. THE MACHINE SHOULD BECONNECTED TO A GROUND FAULT CIRCUIT INTERRUPTER WHEN TESTING LIVE CIRCUITS. FAIL-URE TO FOLLOW THESE INSTRUCTIONS COULD RESULT IN ELECTRICAL SHOCK OR ELECTROCU-TION.

• Connect an AC voltmeter to the Yellow and the Black/Yellow wires.

• Turn the main switch back ON and pull the drive levers UP.

• 0 - 50 volts, check for a defective switch in the control handle (see Control Handle Switches).

• 115 volts, clean or replace the solenoid valve.

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SOLUTION WILL NOT STOP

Solution flows whenever the main switch is ON, even with drive levers DOWN or the solution switch OFF.

Note: The solenoid valve is mounted on top of the brush platform. (See Brush Drive Motor, Solution Pump &Solenoid Valve).

1 Disconnect the Red solenoid valve wire from the Yellow wire in the machine wiring harness.

2 Turn the main switch ON.

• If solution is still dispensed, repair or replace the solenoid valve.

• If solution is not dispensed, look for a defective switch in the control handle (see Control Handle Switches).

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NO SOLUTION FROM NOZZLE (continued)

10


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BRUSH DRIVE MOTOR WILL NOT RUN

Before troubleshooting, check the 6 amp brush circuit breaker, push the reset button if necessary.

1 Turn the main switch ON and pull the drive levers UP.

• If the wheel drive motor and the brush drive motor do not run, see No Wheel Drive Forward or Reverse.

• If the wheel drive motor DOES run, but the brush drive motor DOES NOT, go to step 2.

2 Pull apart the brown plastic connector plug between the brush drive motor and the machine wiringharness.

Note: The brush drive motor is mounted on top of the brush platform. (See Brush Drive Motor, Solution Pump& Solenoid Valve).


• Connect an AC voltmeter to the White and the Blue wires in the harness socket.

• Turn the main switch ON and pull the drive levers UP.

• 0 volts - replace the brush circuit breaker.

• 115 volts - go to step 3.

3 Connect an AC voltmeter to the White and the Black wires in the harness socket.


• 0 volts - replace the brush relay.


TROUBLESHOOTING

11



BRUSH DRIVE MOTOR WILL NOT RUN (continued)

12

4 Turn the main switch OFF and disconnect the power cord from the back of the machine.

• Connect a continuity tester to the Violet and the Red wires in the harness socket.

• No continuity - replace the brush relay.

• Yes continuity - repair or replace the brush drive motor.



NO WHEEL DRIVE FORWARD OR REVERSE

Before troubleshooting, check the 2 amp wheel drive circuit breaker, push the reset button if necessary.

1 Turn the main switch ON and pull the drive levers UP.

• If the brush drive motor DOES NOT run, go to step 2.

• If the brush drive motor DOES run, go to step 4.

2 Remove the (6) screws from the metal cover on the left side of the control handle.

• Remove the (2) “A” screws and (2) “B” nuts and slide the switch box to the left and out of the handle.

• Gently pry box halves “C” and “D” apart, using a flat blade screw driver. Disconnect the wires from oneof the switches.

• Connect a continuity tester to this switch as shown in Figure 11.

FIGURE 11

• You SHOULD have continuity through the switch only when the switch lever is pressed.

• Check the other switch, in the same way as the first.

• If a switch does not operate properly, replace it.

• If both switches operate properly, replace the delay relay (K1).

A

C

B

D

13


TROUBLESHOOTING

3 Put the drive pedal in the UP position, and tip the machine up on its nose.

• Remove the rear cover panel from the bottom of the machine. Then remove the differential and thevacuum motor.


• See Figure 12. Connect a DC voltmeter to the White/Blue and the Orange/Red wires on the wheel driverelay (positive lead to the White/Blue wire).

FIGURE 12

V2Orange/Red

Violet/Brown

Black/Yellow

Black/Yellow

White/Blue

Blue/Black

Blue/Black

Yellow/Red

Yellow/Red

Wheel Drive Relay



• 80 volts - repair or replace the wheel drive motor.

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NO WHEEL DRIVE FORWARD OR REVERSE (continued)

14


TROUBLESHOOTING


4 See Figure 13. Connect a DC voltmeter to the Blue/Black and the Yellow/Red wires on the wheel driverelay (positive lead to the Yellow/Red wire).

FIGURE 13

Orange/Red

Violet/Brown Black/Yellow

White/Blue

Yellow/RedBlue/Black

Blue/Black

Yellow/Red

Black/Yellow

Wheel Drive Relay

V2

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• 80 volts - replace the wheel drive relay.

15


TROUBLESHOOTING


5 See Figure 14. Turn the main switch OFF, pull the White wires off the rectifier and connect them to onelead from an AC voltmeter.

• Connect the other voltmeter lead to the Yellow/White wire on the wheel drive speed controller.

FIGURE 14

Violet/Yellow

Yellow/White

Black

Green/White

Yellow/Red

Yellow/White

Blue/Black

Orange/Blue

WhiteWhite

Wheel DriveSpeed Controller

Rectifier



• 120 volts - replace the rectifier.

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16


TROUBLESHOOTING

6 See Figure 15. Turn the main switch OFF. Leave one lead from the AC voltmeter connected to theWhite wires at the rectifier.


• Move the other meter lead to the Orange/Blue wire on the wheel drive speed controller.

FIGURE 15


• 0 volts - replace the 2 amp wheel drive circuit breaker.


Violet/Yellow

Green/White

Blue/Black

Orange/Blue

Black

Yellow/Red

White White

Yellow/White

Yellow/White


Rectifier

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17


TROUBLESHOOTING

7 See Figure 16. Turn the main switch OFF and remove the Green/White wire from the wheel drive speedcontroller.

• Connect one lead from an ohmmeter to the Green/White wire.

• Connect the other ohmmeter lead to the Violet/Yellow wire.

FIGURE 16

Yellow/White

Green/White

Violet/Yellow

Yellow/White Black

Orange/Blue

Blue/BlackYellow/Red

White White

• If the ohmmeter reads between 34,000 - 38,000 ohms, replace the wheel drive speed controller.

• If ohmmeter remains on maximum resistance, replace the electronic control box.


Rectifier

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18



WHEEL DRIVE CHANGES DIRECTION ABRUPTLYorBRUSH DRIVE MOTOR WILL NOT CHANGE DIRECTION

1 Pull the Black/Yellow wire and the Green/Blue wire from the delay relay (K1).


• Connect an AC voltmeter to these wires.

• Turn the main switch ON.

• While holding the drive levers UP, push the reverse button. The meter should go up to 115 volts for one(1) second when the reverse button is pushed, then go back to 0 volts.

• If the voltage DOES NOT go to 115 volts momentarily, replace the electronic control box.

• If the voltage DOES go to 115 volts momentarily, replace the delay relay (K1).

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Nilfisk-Advance, Inc.14600 21st Avenue NorthPlymouth, MN, 55447-3408www.nilfisk-advance.comPhone: 800-989-2235Fax: 800-989-6566

©2002 Nilfisk-Advance, Inc., Plymouth, MN 55447-3408Printed in the U.S.A.

Documents

Aquamatic Selectric - Southeastern Equipment...• If water does not come out of the accessory port, check for a kinked hose between the pump and the solution tank. If the hose is