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Appendix F—Troubleshooting Guide (continued)
Pump is noisy
Cavitation from poor
suction conditions
Vanes sticking
Bearings worn
Very high differential
pressure
PTO shaft vibration
Pump leaks
Seal or O-rings failed
around shaft
Appendix G—Storage of the
Z-Series Coro-Vane
If your Corken Z-Series pump is to be removed from service
for some time, the pump must be protected as propane,
butane and anhydrous ammonia all leave the metal "bare"
and open to corrosion. Piping and tanks not in service
should also be protected, as the rust particles can destroy
the pump's seals almost immediately after startup.
1
Fill or thoroughly flush the pump with a light rust
inhibiting oil. (If the pump is flushed with oil, placing
some desicant packets inside the pump will provide
added protection.)
2. Plug all pump openings.
3. Store in a dry location.
4. Before placing the pump back into service, drain the
oil and remove any desicant packets.
5. Refer to the "OPERATION OF YOUR PUMP SYSTEM"
section of this manual.
As above.
As above.
Replace if necessary— grease monthly.
Check for restriction in discharge line. Delivery hose too small
and too long. Slow down pump!
Check vapor release float assembly on meter and meter
differential valve.
Inspect and repair driveline component.
Inspect seal assembly and replace if necessary. Keep new seal
very clean when replacing seal. Recommend a light oil film on
O-rings. Do not run pump dry!
®
Truck Pumps
29
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