Specifications

••• 6 •••

6.3 Flush The Pump

If you suspect your pump has been contaminated or discover sludge or other deposits on internal components, you

should thoroughly ﬂ ush the pump. Remove the old oil from the reservoir, then thoroughly clean the reservoir and reﬁ ll

with a clean, nonﬂ ammable ﬂ ushing oil. Reassemble the pump and motor to the reservoir.

Now run the pump in no load condition for 1 or 2 minutes maximum. Unplug the pump and remove the motor and

pump assembly again. Now drain the ﬂ ushing oil and re-clean the inside of the reservoir. (Make sure ﬂ ushing ﬂ uid is

also drained from pump assembly). Reﬁ ll the reservoir with Simplex hydraulic oil and reassemble the pump.

7.0 TROUBLESHOOTING

PROBLEM CAUSE-SOLUTION

Sporadic Tool Action:

• Air in the hydraulic system. See Section 5.2 for correct bleeding procedure.

• Check reservoir oil level.

Motor Will Not Start:

• Be sure power cord is not damaged.

• Check for tripped circuit breaker; be sure breaker is of adequate size.

• Have motor checked for proper operation.

• Have qualiﬁ ed electrician inspect for loose or faulty wiring or switch.

Noisy Operation:

• Air in system.

• Be sure the oil reservoir is ﬁ lled to normal level.

• Check all points where air might leak into system.

• Clogged or blocked intake screen.

• Back pressure problem, consult factory.

Pump Oil is Over Heating:

• Oil viscosity too high. Replace with Simplex Oil.

• Check for high pressure leakage at the pump (leaking at plug or relief valve).

• Oil level is low. Fill reservoir to normal level, or retroﬁ t the pump with larger

reservoir or heat exchanger.

Pump Runs But Will Not Pump Oil:

• Pump is not primed. Run pump a few minutes tipping from side to side.

• Check to make sure that external adjustable relief valve set properly.

• Damaged O-Rings. Take to nearest Simplex authorized service center for repair.

• Defective control valve.

• Incorrect motor rotation, take to nearest Simplex Authorized Service Center.