Advance acoustic Aquamatic Selectric Service Manual

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Aquamatic Selectric

SERVICE MANUAL

Advance MODEL 56263500

Revised 8/93 Form Number 56043015

Table of Contents

Troubleshooting

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Summary of Contents for Advance acoustic Aquamatic Selectric

Page 1 ™ Aquamatic Selectric SERVICE MANUAL Advance MODEL 56263500 Revised 8/93 Form Number 56043015...
Page 2: Table Of Contents
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...
Page 3: Electrical Component Identification
Wheel Drive Speed Controller Rectifier Wheel Drive Relay Brush Relay Electronic Control Box 10 Wheel Drive Motor 11 Solution Pressure Switch 12 Brush Drive Motor 13 Solution Pump 14 Solenoid Valve FRONT FIGURE 1 Brush Platform FIGURE 2 Aquamatic Selectric™ Service Manual...
Page 4: Circuit Breakers
Drain both the solution and recovery tanks and put the drive pedal in the OFF (up) position. Tip the machine up on its nose. See Figure 3. Remove the (4) “A” screws and rear cover “B” from the bottom of the machine. FIGURE 3 Aquamatic Selectric™ Service Manual...
Page 5 WHEEL DRIVE, VACUUM MOTOR & ELECTRICAL CONTROLS (continued) 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. FIGURE 4 Aquamatic Selectric™ Service Manual...
Page 6 • 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. Aquamatic Selectric™ Service Manual...
Page 7: Belt
Turn the front caster wheel to the side and pull the brush platform away from the frame. See 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. Aquamatic Selectric™ Service Manual...
Page 8 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). Aquamatic Selectric™ Service Manual...
Page 9: Control Handle Switches
See Figure 9. 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. Replace parts as required and follow steps in reverse order to reassemble. FIGURE 9 Aquamatic Selectric™ Service Manual...
Page 10: Bladder
Collapse the bladder and pull it through the front tank opening. Remove the recovery tank drain plug and flush out the inside of the tank thoroughly. Clean the bladder inside and out, then follow the steps in reverse order to reinstall it. Aquamatic Selectric™ Service Manual...
Page 11: Troubleshooting
• 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. Aquamatic Selectric™ Service Manual...
Page 12: Troubleshooting
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). Aquamatic Selectric™ Service Manual...
Page 13 Connect 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. • 0 volts - replace the brush relay. • 115 volts - go to step 4. Aquamatic Selectric™ Service Manual...
Page 14 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. Aquamatic Selectric™ Service Manual...
Page 15 • 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). Aquamatic Selectric™ Service Manual...
Page 16 Wheel Drive Relay Blue/Black Yellow/Red Yellow/Red Blue/Black • Turn the main switch ON and pull the drive levers UP. • 0 volts - go to step 4. • 80 volts - repair or replace the wheel drive motor. Aquamatic Selectric™ Service Manual...
Page 17 Wheel Drive Relay Yellow/Red Blue/Black Yellow/Red Blue/Black • Turn the main switch ON and pull the drive levers UP. • 0 volts - go to step 5. • 80 volts - replace the wheel drive relay. Aquamatic Selectric™ Service Manual...
Page 18 Yellow/White Black Rectifier Yellow/White Orange/Blue Yellow/Red Blue/Black White White • Turn the main switch ON and pull the drive levers UP. • 0 volts - go to step 6. • 120 volts - replace the rectifier. Aquamatic Selectric™ Service Manual...
Page 19 Yellow/Red Blue/Black White White • Turn the main switch ON and pull the drive levers UP. • 0 volts - replace the 2 amp wheel drive circuit breaker. • 120 volts - go to step 7. Aquamatic Selectric™ Service Manual...
Page 20 Black Rectifier Yellow/White Orange/Blue Yellow/Red Blue/Black 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. Aquamatic Selectric™ Service Manual...
Page 21 (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). Aquamatic Selectric™ Service Manual...
Page 22 Nilfisk-Advance, Inc. 14600 21st Avenue North Plymouth, MN, 55447-3408 www.nilfisk-advance.com Phone: 800-989-2235 Fax: 800-989-6566 ©2002 Nilfisk-Advance, Inc., Plymouth, MN 55447-3408 Printed in the U.S.A.

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56263500