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Troubleshooting
Troubleshooting
Problem
The pump fails to operate
The pump operates, but the output is
low on both strokes
The pump operates, but the output is
low on the down stroke
The pump operates, but the output is
low on the upstroke
Erratic or accelerated operation
Pump slowly moves after fluid
shutoff in the down stroke
Pump moves slowly after fluid
shutoff in the upstroke
NOTE: For additional troubleshooting information, go to
help.graco.com and search for E1 Transfer Pumps.
Maintenance
Monthly
Electrical connections can loosen over time due to
transporting equipment and normal operation.
Periodically check all electrical connections and tighten
as needed.
20
1. Follow Pressure Relief Procedure, page 15,
2. Check all possible problems and causes before
Cause
Clogged fluid hose or valve
Clogged fluid hose or valve
Exhausted fluid supply
Worn or damaged valves or seals
Held open or worn intake valve
Worn or damaged valves or seals
Held open or worn piston valve
Worn or damaged valves or seals
Exhausted fluid supply
Clogged or dirty intake valve check
ball
Worn or damaged valves or seats
Clogged or dirty piston ball or seat
Worn or damaged valves or seats
Daily
Check the clamp nut (DN) on a daily basis and tighten if
necessary.
before checking or repairing pump.
disassembling pump.
Clear the hose or valves.
Clear the hose or valves.
Refill the fluid supply and reprime the
pump.
Service the valves or seals.
Clear or service the valve.
Service the valves or seals.
Clear or service the valve.
Service the valves or seals.
Refill the fluid supply and reprime the
pump.
Clean ball and seat.
Install repair kit.
Clean ball and seat.
Install repair kit.
Solution
3A8503C
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