Enerpac VSP Série Instructions page 3

3.0 GENERAL INFORMATION
The Enerpac valve design incorporates the following features into
a single unit:
• 10,000 PSI operating pressure
• Load Holding
• Electrical Fail-safe Control
• Manual Override
• The Enerpac valves are specifically designed for use with
Enerpac electric powered pumps and electric controls.
3.1 Capacity (Flow)
Capacity is 732 cu. in. per min. [12 L/min.] at 10,000 psi [700 bar],
1525 cu. in. per min. [25 L/min.] at 7,300 psi [500 bar].
4.0 OPERATION (SEE APPLICATION CHART FOR
PROPER ELECTRICAL REQUIREMENTS.)
1. Connect and secure hoses and cylinder.
2. Connect pendant.
3. Connect valve to specified electrical supply (if required).
4. Start pump motor. The valve is now automatically in the HOLD
(neutral) position.
Note: All valves are fail-safe; if the pendant is not actuated or the
electrical supply to the valves is interrupted, the valve will
automatically shift to the HOLD position, allowing the pump output
to be directed to the tank and the cylinder load to be held. These
valves can be operated manually by depressing the pin actuator in
the center of the solenoid. See Figure 1 and 2.
5.0 3-WAY VALVE DUMP VERSION
1. To advance load, depress button on pendant.
2. Load will automatically return when button is released.
NOTES:
• Dump version does not have a "HOLD" position. This
version comes with a single-button pendant.
• Any VSP series 3-way valve can be converted to a Dump
version by changing to a single-button "Dump" pendant
(IC32).
• The reverse is also true. Any VSP series Dump valve can
be converted to a 3-way valve with a "HOLD" position by
changing to a two-button pendant. (IC43).
6.0 MAINTENANCE
1. Periodically check all hydraulic connections to be sure they
are tight. Loose or leaking connections may cause erratic
and/or total loss of operation. Replace or repair all defective
parts promptly.
2. Periodically check
your system. Refer to the oil filling instructions for complete
data.
3. Change hydraulic oil approximately every 250-300 hours of
operation. In dusty or dirty areas, it may be necessary to
change the oil more frequently.
the hydraulic oil level
7.0 HYDRAULIC SYSTEM
1. Keep all hydraulic components free of dirt, grease, chips, etc.
2. Keep the hydraulic component operating areas uncluttered
and free of unnecessary equipment.
3. Periodically check your hydraulic system for possible loose
connections, leaks, etc. Replace or properly repair damaged
or leaking hydraulic components immediately.
4. Check hydraulic oil in your hydraulic system every 40 hours
of operation or more frequently in unusually dirty or dusty
areas.
8.0 TROUBLESHOOTING
1. If the system will not build pressure, check relief valves in
pump for proper setting (refer to pump repair sheet). Check
and secure all hose connections. If trouble is not corrected by
this action, remove cylinder and hoses from valve. Now place
a 10,000 psi gauge directly in valve port "A" and place the
valve in ADV position. If pressure cannot be developed, the
unit should be taken to the nearest ENERPAC franchised
service center. If pressure develops, the problem is located in
the cylinder, hoses, or couplers.
2. The cylinder will not load or the cylinder creeps when the valve
is in the HOLD position. This is an indication of internal
leakage; take valve to you nearest Enerpac Service Center.
3. The cylinder is hung-up in either the ADV or RET position. This
type of problem is usually a symptom of contaminated
hydraulic oil. The system should be drained and refilled with
fresh ENERPAC hydraulic fluid.
4. Check if all couplers in system are fully engaged.
5. Center the valve manually by depressing the manual override
pin in the center of each valve solenoid cover. Now press the
ADV and RET buttons several times checking the valve
operation and cylinder movement.
9.0 STORAGE INSTRUCTIONS
In the event that the unit would be stored for any prolonged period
of time (30 days or more), prepare the unit as follows:
1. Wipe the entire unit clean.
2. Disconnect all hydraulic and electrical lines to prevent
accidental operation.
3. Cover the unit with some kind of protective cover.
4. Store in a clean, dry environment that is NOT exposed to
extreme temperatures.
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