Gorman-Rupp Pumps 16C2-F4L 913960 thru 1013565 - Manual (Page 17)

OM−00725−06 10 SERIES
TROUBLESHOOTING PAGE D − 2
TROUBLE POSSIBLE CAUSE PROBABLE REMEDY
PUMP REQUIRES
TOO MUCH
POWER
PUMP CLOGS
FREQUENTLY
Impeller or other wearing parts worn
or damaged. Replace worn or damaged parts.
Check that impeller is properly
centered and rotates freely.
Impeller clogged. Free impeller of debris.
Pump speed too slow. Check engine output; consult en-
gine operation manual.
Discharge head too low. Adjust discharge valve.
Liquid solution too thick. Dilute if possible.
Bearing(s) frozen. Disassemble pump and check
bearing(s).
Liquid solution too thick. Dilute if possible.
Discharge flow too slow. Open discharge valve fully to in-
crease flow rate, and run power
source at maximum governed
speed.
Suction check valve or foot valve
clogged or binding. Clean valve.
Suction intake not submerged at
proper level or sump too small. Check installation and correct sub-
mergence as needed.
Suction lift or discharge head too
high. Check piping installation and in-
stall bypass line if needed. See
INSTALLATION.
Pump speed too high. Check engine output.
PUMP STOPS OR
FAILS TO DELIVER
RATED FLOW OR
PRESSURE Air leak in suction line.
Lining of suction hose collapsed.
Correct leak.
Replace suction hose.
Leaking or worn seal or pump gasket. Check pump vacuum. Replace
leaking or worn seal or gasket.
Strainer clogged. Check strainer and clean if neces-
sary.