經(jīng)銷威格士臥式動力單元，美國VICKERS臥式動力單元性能要求
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so oil is going over the relief valve for fixed volume pumps or compensation is reached for
variable piston pumps. Note the pressure settings shown on Pages 6-8 for the maximum suggested
pressure value. 3. Check system pressure gauge.
4. Loosen lock nut on relief valve or compensator adjustment valve. 5. Turn the adjustment screw:
? Clockwise (CW) to increase pressure setting. ? Counterclockwise (CCW) to decrease pressure setting.
6. When the desired pressure is reached on the pressure gauge, tighten lock nut.
? Note: To set the relief valve on a unit that has a pressure compensator: Close the compensator CW
all the way before adjusting the relief. Set the relief to no more than 16 bar (220 psi)
above the maximum recommended operating pressure. Open the compensator CCW to the lower of 9 bar
(120 psi) below the relief setting, or 7 bar (100psi) above the desired operating pressure.
General Operating Specifications ? Maintain fluid cleanliness at an ISO code of 18/16/14 or better.
Use original equipment replacement filter elements ? Filtration return line 18/16/14 or better
? Operating temperature 66? C (150? F) maximum ? Fluid viscosity 70-250 SUS (13-54 cSt)
? Inlet pressure 5 In. Hg. vacuum – atmospheric ? When looking at the fan end of
the motor or shaft end of the pump, the typical motor rotation is clockwise.
Standard Features ? Continuous-duty Rated Electric Motors… for Durability and Long Life
? Aeroquip Hose & Fittings… Leak Free Design ? Lift-off Tops… for Easy Maintenance
? Close-coupled Pump & Motor… for Easy Service and Reliability ? Standard Relief Valve, and Pressure Level /
Temperature Gauges… for System Protection ? Long List of Optional Accessories… for Custom Applications
? Optional Cutler-Hammer Motor Starters… for Ease of Installation
this unit is factory set at 0 - 25 bar (0-350 psi), unless otherwise specified at time of order.
Use the formula HP = PSI * GPM * 0.00073 for a general guideline before adjusting the relief
valve or compensator to ensure you are within the operating limits of the electric motor being used.
Refer to the tables on Page for specific operation limitations. Set the relief valve at least
9 bar (120 psi) higher than the compensator if this unit has a pressure compensated pump (see note below).
It is recommended that the compensator (or relief valve in the case of a non-compensated pump)
be approximately 7 bar (100 psi) higher than the operating pressure required. To adjust the setting,
refer to the following steps: 1. Turn unit on. 2. Block supply port or extend cylinder to full stroke
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? Motor bearings should be greased per the motor manufacturer’s recommended procedure.
? Filters should be checked at least once a month and changed per indicators. Fluid condition should
be checked at regular intervals, depending on environment and application conditions,
to maintain optimum component life. Recommended cleanliness levels for systems
operating 3000 psi or below and using petroleum oil under common conditions should meet an ISO code
level of 18/16/14 or better. Fluids other than petroleum, severe service cycles, proportional
or servo valve applications, or temperature extremes are cause for adjustment of this cleanliness code.
See Eaton Hydraulic Fluids Information Update #03-401 for exact details.
Vickers Fluid Analysis Kit # 894277 or similar should be used to monitor the fluid life. Contact your Eaton
Representative for more information on our Contamination Control Programs.
? Fluid reservoir should be filled to maintain fluid level between the high and low black lines on the sight-level gauge.
? At least once a year or every 4,000 operating hours, the air vent filter should be
replaced and the entire system checked for possible future difficulties. Some applications or
environmental conditions may dictate such maintenance should be performed at more frequent intervals.
Adjusting Relief Valve/Compensator Setting The relief valve and/or compensator on
經(jīng)銷威格士臥式動力單元，美國VICKERS臥式動力單元性能要求
