Hi-Force HHR Series Instrukcja obsługi - Strona 4

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Model Series: HVL, HPS, HLS, HSS, HAS, HHA, HHS, HHR, HDA, HFL, HFG, HSG, HGG, HPC.

HVL Cylinders:

Never extend HVL Cylinders unless the base

of the cylinder is fully supported and an external

load is present.

6.0 Relieving Trapped Pressure in the cylinder:

It is possible that on occasion pressure can become

trapped in the hydraulic cylinder, if a hydraulic hose

is disconnected before the system pressure has

been completely released.

Danger: Never attempt to relieve trapped

hydraulic pressure in the cylinder by

loosening or attempting to remove the

coupler. Trapped hydraulic pressure can cause a

loosened coupler to dislodge unexpectedly with

great force. This action could cause serious

personal injury or death, as the coupler could

become a projectile and hit operatives in the

working area.

Loosening a coupler may result in the escape

of hydraulic oil at high pressure that can

penetrate the skin and could cause serious

injury or death.

Never use a hammer and punch to unseat a

coupler check valve that is under pressure.

Doing this could result in the release of

sudden uncontrolled escape of hydraulic oil at high

pressure which could cause serious injury or death.

7.0 Maintenance:

Always use genuine Hi-Force hydraulic oil with the

cylinders. The use of other fluids may invalidate

your warranty.

After use, always retract the pistons fully, and

disconnect hoses. When disconnections have been

made always fit dust caps to the couplings.

Visually inspect the cylinders for signs of general

damage.

Store in clean and dry conditions. If storage is to be

for a prolonged period it is advisable to apply grease

to exposed metal surfaces. NEVER store cylinders

with in piston in the extended position.

Caution: Double Acting cylinders can

become pressurized whilst in storage due to

temperature

rise

temperature the item was stored at. The

approximate calculation for this is 10 bar pressure

for every 1

C rise in temperature. In certain cases

this could cause difficulty in re-connecting

couplings after storage.

Hi-Force Limited – Prospect Way – Daventry – Northants NN11 8PL – United Kingdom

Tel: +44(0) 1327 301000: Fax: +44(0) 1327 706555: Website: www.hi-force.com

INSTRUCTION MANUAL – HYDRAULIC CYLINDERS:

above

the

ambient

8.0 Trouble Shooting:

Refer to the trouble shooting chart for a list of

typical cylinder problems and the possible causes

for those problems. The chart is neither, exhaustive

or definitive and should only be used as an aid to

help diagnose the most common problems.

Hydraulic cylinders should only be serviced and

repaired by trained and experienced hydraulic

engineers.