Bva-hydraulics J50100 Manuel d'utilisateur télécharger pdf (Page 5)

Figure 2 - Horizontal and Vertical orientations

OPERATION

WARNING: ALWAYS monitor pressure, load or position

using suitable equipment. Pressure may be monitored by

means of an optional manifold and gauge. Load may be

monitored by means of a load cell and digital indicator.

NOTICE: Any attachment that is not loaded centrally, as

through the centerline of the ram, is considered to be “offset”.

When extension tubes and/or offset attachments are used,

the rated capacity is always reduced by 50% for each tube or

offset attachment connected.

1. Pump may be used in horizontal and vertical position as

illustrated on gure 2 below.

Changing Hydraulic Oil

For best performance and increased system life, replace the

complete uid supply at least once per year.

1. With ram fully lowered, remove the oil ller screw from the

pump reservoir as above.

2. Lay the pump on its side and drain the uid into a suitable

container.

NOTICE: Dispose of hydraulic uid in accordance with local

environmental regulations.

3. Set pump in its level upright position.

4. Fill with good quality jack oil to within 3/8" of the oil ller

screw hole opening. Reinstall oil ller screw.

Lubrication

A coating of light lubricating oil to pivot points and hinges will

help to prevent rust and assure that pump assemblies move

freely.

Cleaning

Periodically check the pump piston and ram for signs of rust or

corrosion. Clean as needed and wipe with an oily cloth.

NOTICE: Never use sandpaper or abrasive material on ram

or pump piston.

Storage

When not in use, store with the pump piston and ram fully

retracted.

How to remove faulty coupler:

If ram does not retract,:

1. Secure load by other means.

2. Depressurize pump and hose

3. Remove the ram from application.

4. Disconnect and replace with new coupler.

NOTICE: Do not attempt to grasp ram with pliers or wrench

without rst wrapping the jaws of such tool with rags or similar

padding.

How to bleed air from system:

1. Place pump at a higher elevation than the hose and ram as

shown in gure 3 below.

2. Operate pump to fully extend and retract the ram 2 or 3

times. The objective is to force the air bubbles up hill and

back to the pump reservoir.

3. To bleed the air from pump reservoir, simply open the oil

ller screw. Re-install after bleeding.

2. Locate and close release valve by turning it clockwise until

rmly closed. (Do not over tighten)

3. Operate by pumping handle. This will send uid from the

pump reservoir into the high pressure hose assembly and

into the ram assembly.

4. Continue pumping until ram reaches desired position.

WARNING: NEVER operate pump with release valve

closed and disconnected from application. If operated

in this condition, the hose and connections become

pressurized. This increases burst hazard. Damage may

occur to pump and its components.

5. To Release Pressure on work piece: Slowly, carefully turn

the release valve counter-clockwise until ram retracts to

desired position. Never turn release valve more than 1/2 full

turn. The ram return system is spring loaded and the release

valve system is metered, allowing controlled retraction of

the ram.

MAINTENANCE

1. Inspect hoses and connections daily. Replace damaged

components immediately with BVA Hydraulics Replacement

Parts only.

2. Tighten connections as needed. Use pipe thread sealing

compound when servicing connections.

3. Use only good quality hydraulic uid. Mobil DTE 13M

or equivalent is recommended. Never use brake uid,

transmission uid, turbine oil, motor oil, alcohol, glycerin

etc. Use of other than good quality hydraulic oil will void

warranty and damage the pump, hose, and application.

Adding Hydraulic Oil

1. With ram fully lowered, set pump unit in its normal, level

position. Locate and remove oil ller screw.

2. Fill until oil is within 3/8" of the oil ller screw hole opening,

re-install oil ller screw.

Figure 3 - Illustration to bleed air from system

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Bva-hydraulics J50100 Manuel d'utilisateur Page 5

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