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Enerpac HPT-Series User Manual

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3.1 General Bolting Safety Precautions

DANGER: Failure to observe the following precautions

during bolting procedures may result in serious personal
injury or death.

WARNING: Hydraulic nuts and tensioners must be

installed, operated and maintained only by trained and
experienced personnel familiar with high pressure

bolting devices and related equipment.

Always wear eye protection, gloves and boots when working

near a pressurized hydraulic system.

When working on site, the work area

should be roped-off and all non essential
personnel not involved with the site
operation should be kept clear of the
working area.

Before starting tensioning procedures,

be sure that all personnel are aware that
pressurization of high pressure hydraulic
equipment is about to occur.

Check that the threaded portion of the hydraulic nut or tensioner

is screwed fully onto the stud, and that the thread engagement
is suffi cient.

Never exceed the maximum working pressure of the hydraulic

nut or tensioner.

Do not exceed the maximum allowable ram movement (stroke)

of the hydraulic nut or tensioner.

Always ensure that the piston is fully returned prior to

pressurization of the hydraulic nut or tensioner.

Never stand in-line with the bolt

axis while tensioning or de-tensioning
is in progress. If the bolt should fail,
serious personal injury or death could
result if loose or broken parts become
projectiles. All personnel must be aware
of this potential hazard at all times.

Allow personnel to be near pressurized

hydraulic nuts and tensioners only when absolutely necessary
and only when the pressure is steady. Continually observe the
pump pressure gauge.

Never pressurize the back of

a disconnected male coupler.
Serious personal injury could result
if the coupler fails while under
pressure.

High pressure hydraulic

equipment can be very dangerous
if misused. Keep away from oil
leakages at high pressure. Liquid escaping from highly pressurized
equipment has suffi cient power to penetrate the skin, which can
cause blood poisoning. In the case of such an accident, seek
IMMEDIATE medical attention.

Never attempt to repair leaks while the

system is pressurized. Be sure system
pressure gauge indicates zero (0) PSI /
BAR before making any repairs.

Never attempt to disconnect a hydraulic

coupler while it is under pressure.

Do not exceed the hydraulic hose

manufacturer's specifi ed minimum bend
radius. Do not use kinked hoses.

Before pressurizing the system, carefully inspect all hydraulic

hose assemblies. Replace any damaged, crushed or badly
kinked hoses immediately.

Use caution when pressurizing a system. Pressure can rise

faster than anticipated. Continuously observe the pressure
gauge during pressurization. Be prepared to stop pressurization
immediately at any time.

Never leave a pressurized system unattended. If you must

leave the area, release the pressure and ensure that the release
(return-to-tank) valve on the pump is fully open.

Read, understand and follow manufacturer's instructions when

using bolting equipment such as hydraulic nuts and tensioners.
Observe all safety precautions and hazard statements.

4.0 SPECIFICATIONS

For pump specifi cations, refer to Table 1 located on the back
page of this document.

0

0

0

0

Figure 1, Safety Precautions and Maximum Pressure Limits (decal on pump)

Model HPT-1500

Model HPN-2000