Advance acoustic Aquamatic Selectric User manual

Revised 8/93 Form Number 56043015
Aquamatic Selectric
™
SERVICE MANUAL
Advance MODEL 56263500

Aquamatic Selectric™ Service Manual
TABLE OF CONTENTS
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General Service Instructions
Belt...................................................................................................................5
Bladder.............................................................................................................8
Brush................................................................................................................5
Brush Drive Motor ............................................................................................5
Brush Relay .....................................................................................................2
Circuit Breakers ...............................................................................................2
Control Handle Switches..................................................................................7
Delay Relay (K1)..............................................................................................2
Differential....................................................................................................... 2
Electrical Component Identification..................................................................1
Electronic Control Box .................................................................................... 5
Rectifier............................................................................................................2
Solenoid Valve ................................................................................................ 5
Solution Pump................................................................................................. 5
Vacuum Motor ................................................................................................. 2
Wheel Drive Motor .......................................................................................... 2
Wheel Drive Relay .......................................................................................... 2
Wheel Drive Speed Controller .........................................................................2
Troubleshooting
Brush Drive System Troubleshooting.............................................................11
Solution System Troubleshooting ....................................................................9
Wheel Drive System Troubleshooting............................................................13

Aquamatic Selectric™ Service Manual
GENERAL SERVICE INSTRUCTIONS
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ELECTRICAL COMPONENT IDENTIFICATION
1Brush Circuit Breaker (6 amp)
2Wheel Drive Circuit Breaker (2 amp)
3Vacuum Circuit Breaker (13 amp)
4Delay Relay (K1)
5Wheel Drive Speed Controller
6Rectifier
7Wheel Drive Relay
8Brush Relay
9Electronic Control Box
10 Wheel Drive Motor
11 Solution Pressure Switch
12 Brush Drive Motor
13 Solution Pump
14 Solenoid Valve
10
9
Brush Platform
12
13
11
14
FRONT
8
7
6
45 32 1
FIGURE 1
FIGURE 2
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Aquamatic Selectric™ Service Manual
GENERAL SERVICE INSTRUCTIONS
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WHEEL DRIVE, VACUUM MOTOR & ELECTRICAL CONTROLS
Note: The components listed below are mounted in the machine frame. See Brush Drive Motor, Solution
Pump & Solenoid Valve for service instructions on parts located on the brush platform.
To service... Follow steps...
circuit breakers 1 - 3
differential 1 - 4
rectifier 1 - 6
relays 1 - 6
vacuum motor 1 - 6
wheel drive motor 1 - 7
wheel drive speed controller 1 - 6
1Drain both the solution and recovery tanks and put the drive pedal in the OFF (up) position.
2Tip the machine up on its nose.
3See Figure 3. Remove the (4) “A” screws and rear cover “B” from the bottom of the machine.
A
B
FIGURE 3
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Aquamatic Selectric™ Service Manual
GENERAL SERVICE INSTRUCTIONS
4See 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
M
N
P
E
F
G
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Aquamatic Selectric™ Service Manual
GENERAL SERVICE INSTRUCTIONS
5See Figure 5. Loosen the “H” and “I” hose clamps, pull the hoses off of pickup shoe “J” and vacuum
motor “K”.
6Remove the “L” bolts, disconnect the vacuum motor wiring (cut wire ties straps, if necessary) and remove
the vacuum motor from the machine.
7See Figure 4. Remove the (4) “M” bolts, disconnect the wheel drive motor wiring (cut wire tie straps, if
necessary) 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” down
1/8 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)
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Aquamatic Selectric™ Service Manual
GENERAL SERVICE INSTRUCTIONS
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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 Solenoid
Valve or the Electronic Control Box.
Note: See Wheel Drive, Vacuum Motor & Electrical Controls section for service instructions on parts mounted
in the machine frame.
1Drain both the solution and recovery tanks. Then tip the machine up on its nose.
2See Figure 6. Remove the “A” screws securing belt guard “B” and remove the guard from the frame.
3Place the brush lift pedal in the DOWN position. Then pull the brush platform away from the frame, as far
as the lift cable will allow.
4Remove nut “C” and lift cable “D”.
5Turn the front caster wheel to the side and pull the brush platform away from the frame.
6See Figure 7. Loosen lock nut “E” and turn bolt “F” counter-clockwise to loosen the belt tension. Then
remove belt “G” from the motor pulley.
A
B
Brush Platform
C
DFIGURE 6
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Aquamatic Selectric™ Service Manual
GENERAL SERVICE INSTRUCTIONS
7See Figure 8. Pry belt cover “H” off the end of the brush housing.
FIGURE 7
E
H
Brush
Brush Housing
G
8Pull the brush and the belt out of the brush housing.
FIGURE 8
Number Visible on
Bearing 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 from
the bottom of the machine (see Figure 8).
F
H
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BRUSH DRIVE MOTOR, SOLUTION PUMP & SOLENOID VALVE (continued)
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Aquamatic Selectric™ Service Manual
GENERAL SERVICE INSTRUCTIONS
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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.
1Remove the (6) screws from the metal cover on the left side of the control handle.
2Disconnect 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.
3See Figure 9. Remove the (2) “A” screws and (2) “B” nuts and slide the switch box to the left and out of
the handle.
4Gently pry box halves “C” and “D” apart, using a flat blade screw driver.
5Replace parts as required and follow steps in reverse order to reassemble.
FIGURE 9
C
A
B
D
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Aquamatic Selectric™ Service Manual
GENERAL SERVICE INSTRUCTIONS
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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...
1Unplug the power cord and empty both tanks.
2See Figure 10. Pull the hoses off dome lid “H” and remove the dome from the machine.
3Lift cover “J” and remove the (4) “B” nuts.
4Remove plate “A” and carefully pull the bladder up and off of the (4) “C” screws.
5Working through the rear tank opening, remove the (4) sets of hardware items “D” nuts, “E” clips, “F”
washers and “G” screws.
6Collapse the bladder and pull it through the front tank opening.
7Remove the recovery tank drain plug and flush out the inside of the tank thoroughly.
8Clean the bladder inside and out, then follow the steps in reverse order to reinstall it.
C
BA
H
JGF
D
E
FIGURE 10
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Aquamatic Selectric™ Service Manual
TROUBLESHOOTING
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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.
•makesure that the solution symbol on the control panel is lit. If not, press the solution portion of the touch
pad 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.
1Remove 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 the
solution tank. If the hose is not kinked, repair or replace the pump.
2Reinstall 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. The
air 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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Aquamatic Selectric™ Service Manual
TROUBLESHOOTING
3Disconnect the (2) Red solenoid valve wires from the Yellow and the Black/Yellow wires in the machine
wiring 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 BE
CONNECTED 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).
1Disconnect the Red solenoid valve wire from the Yellow wire in the machine wiring harness.
2Turn the main switch ON.
• If solution is still dispensed, repair or replace the solenoid valve.
•Ifsolutionisnotdispensed,lookforadefectiveswitchinthecontrolhandle(seeControlHandle Switches).
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NO SOLUTION FROM NOZZLE (continued)
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Aquamatic Selectric™ Service Manual
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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.
1Turn 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.
2Pull apart the brown plastic connector plug between the brush drive motor and the machine wiring
harness.
Note: The brush drive motor 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 BE
CONNECTED 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 White and the Blue wires in the harness socket.
• Turn the main switch ON and pull the drive levers UP.
•0volts - replace the brush circuit breaker.
•115 volts - go to step 3.
3Connect an AC voltmeter to the White and the Black wires in the harness socket.
• Turn the main switch ON and pull the drive levers UP.
•0volts - replace the brush relay.
•115 volts - go to step 4.
TROUBLESHOOTING
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Aquamatic Selectric™ Service Manual
TROUBLESHOOTING
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BRUSH DRIVE MOTOR WILL NOT RUN (continued)
12
4Turn 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.

Aquamatic Selectric™ Service Manual
TROUBLESHOOTING
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NO WHEEL DRIVE FORWARD OR REVERSE
Before troubleshooting, check the 2 amp wheel drive circuit breaker, push the reset button if necessary.
1Turn 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.
2Remove 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 one
of 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
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Aquamatic Selectric™ Service Manual
TROUBLESHOOTING
3Put 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 the
vacuum motor.
DANGER!
USE EXTREME CAUTION WHEN TESTING A LIVE ELECTRICAL CIRCUIT. THE MACHINE SHOULD BE
CONNECTED TO A GROUND FAULT CIRCUIT INTERRUPTER WHEN TESTING LIVE CIRCUITS. FAIL-
URE TO FOLLOW THESE INSTRUCTIONS COULD RESULT IN ELECTRICAL SHOCK OR ELECTROCU-
TION.
•See Figure 12. Connect a DC voltmeter to the White/Blue and the Orange/Red wires on the wheel drive
relay (positive lead to the White/Blue wire).
FIGURE 12
V2
Orange/Red
Violet/Brown
Black/Yellow
Black/Yellow
White/Blue
Blue/Black
Blue/Black
Yellow/Red
Yellow/Red
Wheel Drive Relay
• Turn the main switch ON and pull the drive levers UP.
•0volts - go to step 4.
•80 volts - repair or replace the wheel drive motor.
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NO WHEEL DRIVE FORWARD OR REVERSE (continued)
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Aquamatic Selectric™ Service Manual
TROUBLESHOOTING
DANGER!
USE EXTREME CAUTION WHEN TESTING A LIVE ELECTRICAL CIRCUIT. THE MACHINE SHOULD BE
CONNECTED TO A GROUND FAULT CIRCUIT INTERRUPTER WHEN TESTING LIVE CIRCUITS. FAIL-
URE TO FOLLOW THESE INSTRUCTIONS COULD RESULT IN ELECTRICAL SHOCK OR ELECTROCU-
TION.
4See Figure 13. Connect a DC voltmeter to the Blue/Black and the Yellow/Red wires on the wheel drive
relay (positive lead to the Yellow/Red wire).
FIGURE 13
Orange/Red
Violet/Brown Black/Yellow
White/Blue
Yellow/Red
Blue/Black
Blue/Black
Yellow/Red
Black/Yellow
Wheel Drive Relay
V2
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NO WHEEL DRIVE FORWARD OR REVERSE (continued)
• Turn the main switch ON and pull the drive levers UP.
•0volts - go to step 5.
•80 volts - replace the wheel drive relay.
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Aquamatic Selectric™ Service Manual
TROUBLESHOOTING
DANGER!
USE EXTREME CAUTION WHEN TESTING A LIVE ELECTRICAL CIRCUIT. THE MACHINE SHOULD BE
CONNECTED TO A GROUND FAULT CIRCUIT INTERRUPTER WHEN TESTING LIVE CIRCUITS. FAIL-
URE TO FOLLOW THESE INSTRUCTIONS COULD RESULT IN ELECTRICAL SHOCK OR ELECTROCU-
TION.
5See Figure 14. Turn the main switch OFF, pull the White wires off the rectifier and connect them to one
lead 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
White
White
Wheel Drive
Speed Controller
Rectifier
• Turn the main switch ON and pull the drive levers UP.
•0volts - go to step 6.
•120 volts - replace the rectifier.
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NO WHEEL DRIVE FORWARD OR REVERSE (continued)
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Aquamatic Selectric™ Service Manual
TROUBLESHOOTING
6See Figure 15. Turn the main switch OFF. Leave one lead from the AC voltmeter connected to the
White wires at the rectifier.
DANGER!
USE EXTREME CAUTION WHEN TESTING A LIVE ELECTRICAL CIRCUIT. THE MACHINE SHOULD BE
CONNECTED TO A GROUND FAULT CIRCUIT INTERRUPTER WHEN TESTING LIVE CIRCUITS. FAIL-
URE TO FOLLOW THESE INSTRUCTIONS COULD RESULT IN ELECTRICAL SHOCK OR ELECTROCU-
TION.
• Move the other meter lead to the Orange/Blue wire on the wheel drive speed controller.
FIGURE 15
• Turn the main switch ON and pull the drive levers UP.
•0volts - replace the 2 amp wheel drive circuit breaker.
•120 volts - go to step 7.
Violet/Yellow
Green/White
Blue/Black
Orange/Blue
Black
Yellow/Red
White White
Yellow/White
Yellow/White
Wheel Drive
Speed Controller
Rectifier
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NO WHEEL DRIVE FORWARD OR REVERSE (continued)
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Aquamatic Selectric™ Service Manual
TROUBLESHOOTING
7See Figure 16. Turn the main switch OFF and remove the Green/White wire from the wheel drive speed
controller.
•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/Black
Yellow/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.
Wheel Drive
Speed Controller
Rectifier
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NO WHEEL DRIVE FORWARD OR REVERSE (continued)
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