Enerpac EBC20B, Инструкция

Страница: 24 / 28

24
Table 3, Troubleshooting Chart, Cutter Hydraulic Components
Symptom Possible Cause Solution Maint. Level
1. Piston does not
advance.
Piston release screw
loosened.
Tighten piston release screw. Operator
Low hydraulic oil level. Check oil level. Add oil if low. Operator
Return stroke incomplete. Manually return the piston. Refer to
procedure in Section 11.2.
Remove any built-up dirt or debris that
may be preventing the piston from fully
retracting.
Operator
Automatic retract valve
remains open due to built-up
dirt.
Remove built-up dirt from automatic
retract valve.
Service Center
Max. pressure valve dirty or
requires replacement.
Clean or replace max. pressure valve. Service Center
2. Piston does not
fully advance and/
or movement is
jerky.
Low hydraulic oil level. Check oil level. Add oil if low. Operator
Air bubbles in the hydraulic
circuit.
Operate tool through several full cycles
to bleed air.
Operator
Max. pressure valve open. Clean or replace max. pressure valve. Service Center
Hydraulic pump dirty or
defective.
Replace hydraulic pump. Service Center
Piston gasket worn. Replace piston gasket. Service Center
Pump O-ring worn or
missing.
Replace pump O-ring. Service Center
3. Tool operates with
insufficient force.
Dirt inside hydraulic pump
control valve.
Replace valve. Service Center
Max. pressure valve open. Replace pressure valve. Service Center
Hydraulic pump dirty or
defective.
Replace hydraulic pump. Service Center
Piston gasket worn. Replace piston gasket. Service Center
Pump O-ring worn or
missing.
Replace pump O-ring. Service Center
4. Piston does not
automatically
retract.
Piston has not reached full
extension.
Fully extend piston and check if it
reverses.
Operator
Automatic retract valve faulty. Replace automatic retract valve. Service Center
Return spring broken. Replace return spring. Service Center
5. Oil leaks from
tank cover.
Diaphragm faulty. Replace diaphragm. Operator
(Refer to Table 2 for electrical component troubleshooting)