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Dayton 1P579F Operating Instructions And Parts Manual Page 4

Dayton marine utility pump operating instructions and parts manual.
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Dayton Operating Instructions and Parts Manual
Marine Utility Pump
3. Pump should be checked daily,
5. Grease the new impeller with
weekly, monthly, etc., for proper
Vaseline petroleum jelly or similar
NOTE: Impeller replacement is not
lubricant and align the flat on the
operation. If anything has changed
a warranty item.
inside of the impeller with the
since unit was new, unit should
1. Replace impeller when worn,
flat on the motor shaft. Push
be removed and repaired or
damaged by foreign objects, run
impeller into place and at the same
replaced. Only qualified electricians
dry or when pumping a liquid
time twist in clockwise direction.
or servicemen should attempt
not compatible with impeller.
This will bend the blades in the
to repair this unit. Improper
direction required for running.
repair and/or assembly can
2. Obtain service Repair Kit
cause an electrical shock hazard.
6. Replace cover using new gasket
provided with each 1R387A Repair
3. Remove cover plate and gasket.
Kit. Tighten all screws evenly and
4. Remove impeller.
snugly. DO NOT over-tighten.
Troubleshooting Chart
Possible Cause(s)
Corrective Action
1. No electricity
1. Determine that outlet is for 115VAC
2. Brushes worn out
2. Replace
3. Impeller jammed
3. Clear obstruction
Pump will not run
4. Motor has open circuit
4. Replace
5. Motor overheated
5. Motor has Automatic Thermal Protector. Wait for
fifteen minutes for motor to cool, then restart.
Liquid may be too hot.
1. Faulty suction piping
1. Repair or replace
2. Defective impeller
2. Replace
3. Suction lift too high
3. Lower pump
Pump runs but no fluid is
4. Discharge height too great
4. Lower the height
5. Clogged inlet
5. Clean or replace
6. Pump too far from liquid
6. Relocate
1. Air leak in suction line
1. Repair or replace.
2. Defective impeller
2. Replace
3. Seal worn
3. Replace
4. Gasket leaking
4. Replace
5. Groove worn in shaft at seal area
5. Replace motor
Pump will not prime or retain
prime after operating.
6. Suction lift too high
6. Lower pump
7. Hose kinked
7. Straighten hose
8. Hose fitting not tight on head
8. Tighten hose
9. Inadequate impeller lubrication
9. Lubricate through inlet or outlet of pump head.
See note in Operation.
1. Piping or hose is fouled or damaged
1. Clean or replace
2. Clogged impeller
2. Clear obstruction
Flow rate is low
3. Worn cam or impeller
3. Replace
4. Voltage incorrect
4. Supply to be 115VAC, 60Hz
1. Seal worn out
1. Replace
Shaft seal leaks
2. Shaft grooved
2. Replace motor
3. Pump head loose on motor
3. Repair
1. Voltage incorrect
1. Supply to be 115VAC, 60Hz
2. Excessive discharge pressure
2. Reduce pressure
3. Impeller swollen
3. Replace
Motor runs too hot
4. Liquid too viscous
4. Reduce viscosity of liquid
5. Plugged or kinked discharge
5. Examine and repair
6. Insufficient air flow on motor
6. Be sure ample fresh air is available at the motor.

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