Maintenance; Impeller Replacement - red lion RLMPFVK115 Owner's Manual

Priming and Starting the Pump
1. Pumps are self-priming and should prime themselves within 30 seconds after pump is started.
• Wetting the impeller with pumped fluid and keeping the impeller coated with petroleum jelly will
lengthen its life and improve priming action.
IMPORTANT: Running the impeller dry for as little as 30 seconds can ruin the impeller. Keep suction
line as short as possible.
NOTE: An easy way to prime the pump (wet the impeller) is to fill the discharge hose, elevate the hose
slightly to retain water, and start the pump. The water behind the impeller will seal the pump and it will
prime almost immediately.
2. To operate the pump, plug the power cord into an electrical outlet. To reduce the risk of electric shock,
be certain it is connected only to a properly grounded grounding-type receptacle.
3. To stop pump operation, disconnect the power cord.

MAINTENANCE

Risk of severe injury or death by electrical shock, high temperatures, or
pressurized fluids.
• Always unplug the pump power cord and allow pump to cool completely before servicing.
Before each use, inspect the pump for loose screws, misalignment of impeller, cracked or broken parts,
damaged lead wires, and loose or leaking hoses. Any problems should be corrected before pump is
returned to service. Only qualified electricians or servicemen should attempt to repair this unit.
Always check the power cord and electric receptacle for damage or corrosion before each use. The power
cord on these units cannot be replaced. If damaged, replace the pump.
Inspect motor brushes after every 50 hours of operation. If brushes are less than ¼" long they should be
replaced. Brushes should be replaced a minimum of every 100 hours to avoid damaging the motor. If re-
installing old motor brushes, be sure to mark the location from which each came and replace used brushes
in their original orientation.
Replace motor brushes as follows:
1. Remove motor brush caps with screwdriver.
2. Remove used motor brush assembly.
3. Inspect brushes, replace if less than ¼" long.
4. Insert new motor brush assembly.
5. Replace motor brush caps.

Impeller Replacement

1. Remove cover plate mounting screws, cover plate, and
cover plate gasket.
2. Slide damaged or worn impeller off motor shaft.
3. Clean the inside of the pump head and the cover gasket sealing surface. Make certain there are no for-
eign materials that would obstruct the impeller's operation.
4. Apply petroleum jelly or similar lubricant to the inside of the pump head and to the impeller.
5. Align the flat on the inside of the impeller shaft bore with the flat on the motor shaft. Push the impeller
into place, while twisting the impeller vanes in a clockwise rotation.
6. Place a new gasket on the pump head face, align holes and replace cover. Tighten screws evenly.
Priming and Starting the Pump
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MAINTENANCE
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New
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Replace
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