Pulsafeeder Pulsar Shadow - Manual (Page 19)

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6.2 Suction System
Before operation of any PULSAR pump, carefully ensure that all suction valves are in the open position.
Verify that all filters and strainers are clean and clear. Ensure that any other potential causes of
restriction have been addressed. Unrestricted flow of liquid to the suction side of the pump is critical to
proper operation.
6.3 Priming the Pumphead (Hydraulic System)
All pumps are shipped with a fully primed hydraulic system. However, during shipping and handling
some air may enter the hydraulic system. Generally this air will be automatically purged after a short
run-in period. If necessary, rapid purging may be accomplished by fully depressing and holding the
PTP valve while the pump is operating. With the valve depressed, oil should begin to flow out of the
center diagnostic port. Continue to hold the valve down until the oil is clear of bubbles.
If the pump fails to prime, go to the next section and follow the Priming the Pumphead procedure
(Section 7.2.2). See Appendix I on page 33 for further information if your pump is equipped with a
PULSAlarm leak detection system.
6.4 Priming the Reagent Head (Product System)
1. Open the suction and discharge line shutoff valves.
2. If the piping system design and the storage tank are such that the product flows due to gravity through
the pump, no priming is required. In the event the discharge line contains a significant amount of
pressurized air or other gas, it may be necessary to lower the discharge pressure to enable the pump to
self-prime.
3. If the installation involves a suction lift, it may be necessary to prime the reagent head and suction
line. Try priming the reagent head first. Remove the discharge valve by unscrewing the four tie bar
bolts and removing the valve as a unit. Fill the head through the discharge valve port with process (or
compatible) liquid, then reinstall the valve and retighten the tie bar bolts.
4. Start the pump at the 0% stroke length setting and slowly increase the setting to 100% to prime the
pump. If this does not work, it will be necessary to fill the suction line.
5. Filling of the suction line will necessitate the use of a foot valve or similar device at the end of the
suction line so that liquid can be maintained above the reservoir level. Remove the suction valve
assembly, fill the line, replace the valve, then remove the discharge valve assembly and fill the
reagent head as described in Step (3) above. The pump will now self-prime when started up per step
(4) above.