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Enerpac THQ-Series User Manual

Page 3

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INSTALLATION

Hydraulic Hoses

1. Before operating, visually inspect the system.

2. Check to be sure there are no cracks, kinks, cuts, or other damage

which might cause the hose to leak. Rubber guards protect crimped
areas at each end of the hose.

3. Make sure all hose ends, couplers, or union ends are

clean and threads are in good condition.

4. Hose should not be twisted or bent too sharply. The

bend radius should always be at least 4.5 inches
(11,4 cm). Always use as few bends as possible.

5. Do not drop heavy objects on hose. A sharp impact

may cause internal damage to hose wire strands.
Applying pressure to a damaged hose may cause it
to rupture.

6. Make sure all hose connections between pump and

cylinder are tight and leak free. Do not over-tighten connections or
use tools to tighten connections. Excessive torque may cause
premature thread failure and may cause high pressure fittings to split
at pressure lower than rated capacity. When using quick disconnect
fittings, make sure the fittings are correctly and completely fastened
together.

Fittings and Tubing

The following guidelines should be used whenever fittings are used in
hydraulic systems.

1. Care must be taken that threaded fittings are not cross-threaded.

2. Be sure connections are sealed using high grade pipe thread sealer.

3. Tape or sealing compound should be confined to threaded areas only.

Keep first thread free of tape to avoid pieces of tape getting into the
system.

CAUTION

Use care to ensure that pieces of tape do not enter the hydraulic system.

Pieces of tape in the fluid impairs fluid flow, causing system malfunctions.

4. Vibration and system shock-loads are the primary cause of

fitting/tubing leaks. Use commercially available tube supports to
extend the life of your system. The most critical area to use a tube
support is 4-7 inches behind a fitting.

5. Tubing is not rigid. Long runs must be supported. Unsupported

sections can lead to premature fitting failure. Always hard mount
valves and gauges. Never allow tubing to be their sole support!

(3)

R

=

in.

R

=

11,4

cm

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