SECTION V
TROUBLESHOOTING
If the procedures listed below do not remedy the problem -- the pump will require
service and should be taken to an authorized Simplex service center for repair
Problem
Cause -- Solution
Motor Will Not Start
Noisy Operation
Pump Oil is Over Heating
Pump Runs but Will Not Pump Oil
Be sure power cord is not damaged. Check for
tripped circuit breaker--be sure breaker is of ad-
equate size. Have qualified electrician inspect for
loose or faulty wiring. Have motor checked for
defective motor capacitor. Be sure electrical supply
and extension cords are adequate.
1. Air in system.
procedure).
2. Be sure the oil reservoir is filled to normal level.
3. Check all points where air might leak into
system.
1. Oil viscosity too high. Replace with Simplex #9.
2. Check for high pressure leakage on upper
pressure plate. (Leaking at plug).
3. Oil level is low. Fill reservoir to normal level, or
refit the pump with larger reservoir.
1. Pump is not primed. Run pump a few minutes
tipping from side to side.
2. Check to make sure that externally adjustable
relief valve set properly.
Check internal relief valve.
3. Damaged O-Rings. Take to nearest Simplex
service center for repair.
4. Defective control valve. (Troubleshoot
separately).
