Operating instructions

ADJUSTMENTS AND CONTROLS:

ADJUST PAN SPEED

There are three controls available on this power unit. The first is an adjustable relief

valve mounted into the custom aluminum manifold block. The other two control the

linear speed of the actuator.

RELIEF VALVE:

The relief valve is located underneath an aluminum hexagon cover on the side of the

custom manifold block. This relief valve is factory set to 825 P.S.I. and locked and

should not be adjusted.

If adjustments are necessary, remove the hexagon cover which will give access to the

relief valve screw. With the pump running, and with a suitable flat blade style

screwdriver, rotate the screw clockwise to increase pressure, and counter-clockwise to

decrease pressure. While this operation is being carried out some oil will leak down the

threads of the adjusting screw.

To obtain the pressure required, a pressure gauge will have to be located in the circuit.

The best location is on the cylinder hose. To set the pressure, energize the solenoid to

extend the cylinder fully and thus “deadhead” the system. The pressure can be set as

indicated above. When adjustment is complete, replace the hexagon cover. This will

seal the relief valve area. The actual factory set pressure is noted on the label and

should not be exceeded as this affects the HP draw on the electric motor.

FLOW CONTROL:

There are two flow control valves mounted on the power unit and located on the solenoid

valve subplate. The flow control valves will restrict the capacity of oil passing through

them when the knurled knob is screwed in - in a clockwise direction. This action will

reduce the linear speed of the cylinder. Turning the flow control valve adjustment in the

opposite direction – counter-clockwise, will increase the speed of the cylinder. One flow

control valve (right side) will allow adjustment of the extension speed (travel speed

should be set at minimum 20 seconds), the other (left side) the retraction speed.

(Retraction speed should be set at minimum 10 seconds).

IMPORTANT:

It should be noted that if the cylinder speed is restricted by the flow control valves, the

balance of oil not delivered to the cylinder will go over the relief @ 825 P.S.I. which will

cause unwanted heat in the reservoir.