Summary of Contents for Hoover SCRUBMAX
- Page 1 SERVICE INSTRUCTIONS BATTERY POWERED WALK BEHIND SCRUBBERS Maytag Services 16025785...
- Page 2 Simple and quick brush or pad changing Superior 4-wheel stability Will run 8 hour shift under normal operating conditions The ScrubMAX is available in both 26" and 32' brush widths. II. Basic operation All operations of the ScrubMAX are easily accessed near the control panel at the rear of the unit.
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Page 3: Table Of Contents
Repair Guide Table of Contents Battery Cautions Batteries - Cell Levels Batteries - Remove & Installation Battery Testing Procedures Brush Chain Tensioner Assembly Brush Drive Chain Replacement Brush Hub, Bearings & Brush Sprocket Brush Motor & Brush Motor Sprocket Brush Motor Shut-Off Switch Circuit Breaker - Test &... -
Page 4: Battery Cautions
2. Overfilling the cells will result in the cells Battery Cautions boiling over during charging, emitting excess acid and associated gases. These acids are highly 1. Whenever cleaning or filling batteries, wear corrosive and can damage the batteries and protective goggles and gloves. The acid is surrounding metal components. -
Page 5: Battery Testing Procedures
Battery Testing Procedures Note: It is advisable to grease both sides of the sliding part of the tensioner bracket prior to 1. Using a DC voltmeter, read the total voltage at reinstallation. the positive and negative battery terminals where the positive and negative cables from the 6. -
Page 6: Brush Hub, Bearings & Brush Sprocket
8. Apply grease to the inside of the chain while 7. Remove the 4 bolts attaching brush hub to rotating it by hand. Place a large piece of brush sprocket. cardboard under the brush drive assembly. Now run the brush drive under power by turning the 8. -
Page 7: Brush Motor Shut-Off Switch
5. Remove the brush motor sprocket by locating 3. Remove the instrument panel and rear panel the two set screws in the hub of the sprocket and mounting screws (7). loosening them. Next, pry the sprocket off the motor shaft, taking care not to lose the key on the 4. -
Page 8: Differential Shaft & Bearings
6. Reinstall the instrument panel, and positive d. Correct chain tension. battery cable. e. Sprockets aligned. Differential (Drive) Shaft, & Bearings f. All fasteners fully tightened and in place. 1. Remove the batteries and tip the machine on Gate Valve Replacement its LH side. -
Page 9: Idler Sprocket
Idler Sprocket Jackshaft, Bearings & Sprockets 1. De-mount the brush chain, but do not See Diagram - page 102 disconnect. 1. Remove the batteries and tip the machine on 2. Locate the bolt and nut mounting the idler its LH side. sprocket to the brush plate. -
Page 10: One Ohm Resistor
Diagram "A" represents the latest revisions to the 1. Remove the vacuum hose from the "T" bar. printed circuit board on all ScrubMax units. Follow this diagram on all installations or if the 2. Remove the mounting screws from the machine is being converted from an "older"... -
Page 11: Ring Assembly & Hardware
Some of the older boards had a resistor in the orange wire from the potentiometer (#8). When installing a current board, this resistor must be removed. Some older boards were wired per diagram "B" below. When converting this arrangement to the new board, you must reverse the low-pot (brown #6) wire with the high-pot (orange #8) wire to match diagram "A". -
Page 12: Squeegee Blades
3. After all wiring has been transferred, hold the These slits are to be located where the squeegee new solenoid clear of the electrical panel WITH body bends. INSULATED PLIERS and reattach the positive battery cable. 6. Reassemble to the machine and test. 4. -
Page 13: Squeegee "T" Bar Gasket Replacement
Squeegee "T" Bar Gasket Replacement See diagram, page 108. The squeegee "T" bar gasket creates a seal between the squeegee and the vacuum system. It must be maintained or replaced to ensure good solution recovery. 1. Lower the squeegee onto the floor. 2. -
Page 14: Swivel Caster
9. Insert the new switch, noting how the switch 5. Note which lead is connected to the positive sits in the panel cavity, for proper on/ off (+) terminal of the traction motor and identify this operation. lead with a piece of tape, etc. Some motors have a (+) stamped into the appropriate motor lead 10. -
Page 15: Vacuum Motor Shut-Off Assembly
3. Remove the rear panel from the machine. 9. Reassemble in reverse, using new compo- Detach the vacuum hose from the squeegee and nents where necessary. It is advisable to polish feed the hose back through the panel. the brass rod and the inside of the tube prior to reassembly to remove any built-up grime, etc., 4. -
Page 16: Wiring Diagram
8. The new filter screen is installed by "melting" the plastic screen to the plastic vac pot with an electric soldering gun or iron. 9. Reassemble in reverse, using a new vacuum motor and lint filter, if necessary. Wiring Diagram... -
Page 17: Troubleshooting
IV. Troubleshooting check list - ScrubMAX The following is a guide to aid in determining the origin of a problem for which these models could conceivably be brought in for service. Problem Possible Cause Possible Solution A. Machine will 1. Battery condition low.
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