Troubleshooting Symptoms and Required Action
Symptom | Probable Cause | Required Action |
|---|---|---|
Pump will not build pressure. | 1. Air Electric supply is low. | 1. Check air pressure or voltage. |
2. Defective relief or regulator valve. | 2. Replace valve. Contact Atlas Copco service. | |
3. Low oil or clogged filter. | 3. Fill reservoir and clean filter. | |
4. Internal leak in oil line from external relief valve to pump body. | 4. Open reservoir, inspect oil line while trying to build pressure- if leaking tighten fittings or replace. | |
5. Defective Solenoid or regulating valve. | 5. See “Cylinder will not build pressure-#2 above” | |
Motor sluggish and inefficient “sounds sick” slow to build pressure. | 1. Air or electric supply is low. | 1. See #1 in preceding block |
2. Clogged filter. | 2. Clean or replace filter | |
Pump heats up. | 1. Improper use. | 1. Operator is continuing to hold down on the advance stroke after the cylinder has reached end of stroke- this causes a lot of oil to go through a very small hole in relief-valve- causing heat build-up. Have operator release advance stroke after disengagement levers spring forward. |
2. Remote control is left in “on” position when pump is not actively in use. | 2. Turn pump off whenever not actually being used. DO NOT leave pump running when tool is not in use. | |
Pump cannot reach 10,000 psi, only 9,000psi | Change regulating valve | 1A.Remove 3 screws of 4 port block manifold IB. Remove regulating valve IC. Replace new regulating valve ID. Don’t forget metal ring IE. Check o’rings on block manifold IF. Replace block manifold IG. Place 1 drop of loctite on each screw IH. Tighten screws firmly - double check screws are fully tightened. |
Pressure can’t reach 4,000 psi | Change cut off valve(s) | IA. Remove the pump from tank IB. Change cut-off valves 3,250 psi /70 bar 90% Chance pump is workingIB. Change cut-off valves 3,250 psi /70 bar 90% Chance pump is working IC. If pump can’t get 10,000 psi change cut-off valve 1,250 psi/350 bar |
Pressure not stable (big variation) | Change solenoid (115v), (220v) | IA. Remove top solenoid IB. Replace new top solenoid IC. Check o’rings |
Pressure not stable (small variation) | Change check valves Part# 20374 Need special tooling | IA. Remove the pump from tank IB. Replace check valve IC. Do not tight too much |
No pressure | Check piping | IA. Remove the pump from tank or Check piping couplers IB. Check t-coupler inside the pump |
Uncontrolled pressure | 1. Check coupling Part#10190 | IA. Remove the pump from the tank IB. Remove piping IC. Remove block pump (screws# 20444) ID. Check attentively coupling IE. Do not forget to replace keys(part #10184) |
2. Check pumps Part# 10168-10169-10170 | 2A. Remove the pump from the tank 2B. Untighten pump’s screws 2C. Check seals 2D. Replace 2E. Tighten firmly |
