Recommended installation and start up procedure

1

Connect the motor to the power supply – do not rotate the pump under power at this stage. Fluid is left in the pump after factory testing to assist with priming. Rotating the pump will eject this fluid and make priming more difficult.

2

Before connecting the suction line to the pump, ensure that the free flow of fluid from the tank via the suction line is greater than the maximum flow required through the pump.

3

The suction side of the pump should be fitted with a filter of at most 125 microns – this is a maximum figure and should be improved on if flow conditions allow. Connect the suction line, and ensure that the inlet is fully flooded before the pump is rotated.

4

Connect the delivery pipework. The pump should be protected from over- pressurisation by a relief valve set 5–10% above the maximum pressure.

5

Fill the pump case with good quality general purpose lubricating oil to the level indicated on the installation drawing. In the case of vertically mounted pumps,

allow time for the oil to drain down to the case before establishing the final level. For ambient temperatures below 35șC the oil viscosity should be ISO 100. For ambient temperatures above 35șC, or for constant running applications where the case temperature is above 55șC, oil of ISO 150 viscosity should be used.

6

Before starting the pump, loosen the air bleed screws as indicated on the installation drawing and ensure that all air is vented from the inlet, bulkhead and valve gear.

7

Ensure that the pump is started off load. Apply pressure and check the flow rate. Loss of flow and/or vibration indicates that air is trapped in the cylinder block. In this case it may be necessary to open the bleed screws a number of times. If opening the bleed screws fails to remove all the trapped air, it will be necessary to purge the pump by pressurising the inlet and forcing fluid through the chambers. This can be achieved by connecting a flushing or charging pump to the inlet. The maximum pressure applied should not exceed 100 PSI (7.0 bar).