Troubleshooting Chart - Enerpac NS Serie Instrucciones

CAUTION: Be careful when handling blades. Fractured
edges can be sharp. Wear appropriate hand protection
when removing and installing blades.
3. Determine if the old blade has any reusable edges. If a new
blade is to be installed, refer to Section 3.1 for replacement
blade part numbers. Be sure to use the proper blade for the
cutting head used on your nut splitter model.
4. From the underside of the head, slide the new or rotated blade
into the dovetail shaped groove in the blade holder, until the
ball detent snaps into position. The blade is fully installed
when the bottom of the blade is fl ush with the fl at bottom of
the blade holder.
Problem
1. Nut splitter cylinder will not
hold pressure.
2. Nut splitter cylinder builds
pressure, but piston and blade
do not move or move only a
partial amount.
3. Nut splitter cylinder will not
build pressure.
4. Nut splitter cylinder will not
retract or retracts very slowly.
5. Nut splitter builds full pressure,
but will not split nut.
6. Hose is diffi cult to assemble.
7. Frequent blade replacement.
8. Leakage from nut splitter oil
bleed hole on underside of
blade holder.

Troubleshooting Chart

Possible Cause
Piston seal leaking.
Coupler leaking.
Cylinder internal relief valve malfunction. Check relief valve and replace if required.
Hydraulic pump malfunction.
Pump reservoir not vented.
Coupler not fully assembled.
Both hoses not connected.
(double acting models only)
Piston at full stroke.
Blocked hose.
Pump release valve open.
Piston seal leaking.
Cylinder internal relief valve malfunction. Check relief valve and replace if required.
Insuffi cient oil in pump.
Coupler leaking.
Loose coupler.
Restricted or blocked hose.
Incorrect coupler being used.
Incorrect hose being used.
Pump release valve closed.
Broken or weak piston return spring.
(single acting models only)
(See Section 6.4 of instructions.)
Damaged coupler.
Internal pressure within hose.
Lubricant not used.
Pressure above 10,000 psi [700 bar].
8.0 TROUBLESHOOTING
The Troubleshooting Chart is intended as a guide to help you
diagnose and correct various possible problems.
Only qualifi ed hydraulic technicians should troubleshoot and
service the nut splitter. For repair service, contact the Authorized
Enerpac Service Center in your area.
WARNING: Fully release hydraulic pressure and
disconnect hydraulic hose(s) from nut splitter cylinder
before performing
maintenance.
CAUTION: Piston retract spring and other internal parts
may eject from cylinder suddenly during disassembly.
To avoid personal injury, use caution if cylinder
disassembly is necessary. Cylinder disassembly and repairs
should be performed only by qualifi ed personnel.
Action
Replace seal.
Replace coupler.
Check hydraulic pump for proper operation. Repair or
replace pump as required.
If using a vented pump, loosen vent/fi ll cap or vent
screw as required to provide venting.
Check couplers.
Be sure that both hoses are connected.
Allow piston to retract.
Replace hose.
Close pump release valve.
Replace seal.
Add oil to pump reservoir as required.
Replace coupler.
Check coupler and tighten if loose.
Replace hose.
Install correct coupler.
Install correct hose.
Open pump release valve.
Replace return spring.
(See Section 6.4 of instructions.)
Replace coupler.
Vent hose.
Use lubricant.
Release system pressure to allow cylinder internal
relief valve to reset.
7
any adjustments, repairs or