Form No. 102977
Rev. 2 Jun. 02, 2022
6© SPX FLOW, Inc.
4. Adjusting The Pressure Regulating Valve
NOTE: For easy adjustment of the pressure regulating valve, always adjust the pressure by increasing
to the desired pressure setting.
A� Loosen the wing nut on the pressure regulating valve, and turn the knob out a few turns in a
counterclockwise direction� This will decrease the setting to a lower than desired pressure�
B� The pump must be completely connected� Press and hold the Run button on the hand switch�Slowly
turn the pressure regulator knob in a clockwise direction� This gradually increases the pressure setting�
When the desired pressure is reached, lock the knob in position by tightening the wing nut�
PREVENTIVE MAINTENANCE
To help prevent personal injury,
• Disconnect the pump from the power source before performing maintenance or repair
procedures.
• Repairs or maintenance must be performed in a dust-free area by a qualied technician.
1. Bleeding Air from the System
Air can accumulate in the hydraulic system if the reservoir oil level is too low� This air causes the cylinder to
respond in an unstable or slow manner. To remove the air:
A� The hydraulic cylinder(s) must be positioned on their side(s) with the couplers located upward�
B� Remove any load from the cylinder(s), and cycle the hydraulic system through several cycles (fully
extend and retract the cylinders)�
IMPORTANT:
Some of the single-acting spring return cylinders have a cavity in the rod that forms an air pocket. This
type of cylinder must be positioned upside down when the hydraulic system is bled.
2. Hydraulic Fluid Level
A� Check the oil level in the reservoir after each 10 hours of use. Proper oil level is 1/2” from the top of the
ll hole when all cylinders are retracted.
B� Drain, ush, and rell the reservoir with an approved, high-grade hydraulic oil after approximately
every 300 hours of use� The frequency of oil changes will depend upon the general working conditions,
severity of use, and overall cleanliness and care given the pump�
3. Lubrication (Air Driven Motor Only)
If the pump is operated on a continuous duty cycle or a maximum speeds for extended periods, an
automatic air line oiler should be installed in the air inlet line as close to the pumping unit as possible� Set
the unit to feed 1-3 drops of oil per minute (one drop for every 50-75 CFM of air) into the system, or refer to
the pump manufacturer’s instructions� Use SAE No� 10 oil�
Set-Up and Operation Continued
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