2 re-priming the pump head – Pulsafeeder PulsaPro 900 EN User Manual

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7.2

Re-Priming the Pump Head

The

PulsaPro

must maintain hydraulic prime to operate properly. While its Hydraulic System includes

several components to protect its prime – the HPV, HBV and PTP – they will not automatically restore
hydraulic prime if the oil is drained from the hydraulic chamber (the space between the piston and the
diaphragm). This would commonly occur when the diaphragm is replaced for example. This procedure
describes how to efficiently re-prime the Pump Head.

Re-Priming the Pump Head is not required when performing a normal oil change. Typically
the Pump Head hydraulic chamber will retain its prime while you drain the oil using the
drain valve in the Gear Box.

This procedure may be helpful in cases where the system has experienced a severe upset (for
example, when a valve in the suction line is shut off for more than 30 minutes).

Figure 13

DIAGNOSTIC WINDOW

PUSH TO PRIME (PTP)

RESERVOIR OIL LEVEL

RESERVOIR

HYDRAULIC CHAMBER