Enerpac А-Series - Manual (Page 3)

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CAUTION: Be sure threads are fully engaged. All loads
must be transferred to the face of the plunger. Threads
will be stripped if loaded.
5.0 OPERATION
Refer to the instruction sheet supplied with your pump for
information on installing and operating your pump.
1. Check the oil level in the pump.
2. Make sure all connections are tight and leak free.
3. Remove air from the system by placing the cylinder at a lower
level than the pump and cycling the cylinder several times
until the motion is smooth.
IMPORTANT: Do not exceed the maximum system pressure for
the spreader model being used:
Model A-92: Maximum system pressure must not exceed 5,000
psi (344 bar). Spreader maximum capacity is achieved at 50
percent of the RC-10 cylinder's rated maximum pressure.
Model WR-15: Maximum system pressure varies depending on
spread distance. Refer to WR-15 load ratings table in Section
3.0.
Model WR-5: Maximum system pressure must not exceed
10,000 psi (689 bar).
WARNING: Failure to observe pressure limits may
result in serious personal injury and/or damage to
spreader.
CAUTION: Pressurizing the spreader with the jaws in
the fully open position can damage the spreader and
may result in failure of spreader components.
4. Operate the pump to spread the cylinder jaws. The jaws will
close automatically when the pressure is released. The
speed of retraction is dependent on the length of the hose
and other restrictions in the line.
CAUTION: Keep
hands away from the
pivot point (A) of
spreader jaws.
CAUTION: Keep
hands clear of the
load, away from the
jaws of the spreader.
W ARNING: DO NOT
handle pressurized
hoses. Escaping oil
u n d e r pressure can penetrate
the skin, causing serious injury.
If oil is injected under the skin,
see a doctor immediately.
6.0 MAINTENANCE
Use dust caps on couplers when cylinders are disconnected to
prevent dirt from entering the system. Keep parts clean. Inspect
all components for damage or wear before and after use.
7.0 TROUBLESHOOTING
The following information is intended as an aid in determining
if a problem exists. For repair service, contact the Authorized
Enerpac Service Center in your area.
Troubleshooting
Problem Possible Cause Solution
Cylinder does
not advance,
advances slowly,
or advances in
spurts. Oil level in pump reservoir is low. Add oil according to the pump instructions.
Pump release valve open. Close pump release valve.
Loose hydraulic coupler. Check that all couplers are fully tightened.
Load is too heavy. Do not attempt to lift more than rated tonnage.
Air trapped in system. Remove air according to the instructions above.
Cylinder plunger binding. Check for damage to cylinder.
Have cylinder serviced by a qualifi ed hydraulic technician.
Cylinder
advances, but
does not hold
pressure. Leaking connection. Check that all connections are tight and leak free.
Leaking cylinder seals. Locate leak(s) and have equipment serviced by a qualifi ed
hydraulic technician.
Internal leakage in pump. Have cylinder serviced by a qualifi ed hydraulic technician.
Cylinder does
not retract,
retracts part
way, or retracts
more slowly than
normal. Pump release valve closed. Open pump release valve.
Pump reservoir is over-fi lled. Drain oil level to full mark.
See pump instructions for adding oil.
Loose hydraulic coupler. Check that all couplers are fully tightened.
Air trapped in system. Remove air according to the instructions above.
Hose I.D. too narrow. Use larger diameter hydraulic hose.
Cylinder retraction spring broken or other
cylinder damage. Have cylinder serviced by a qualifi ed hydraulic technician.
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