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7.
Startup Procedure
7.1 Output Adjustment
All PulsaPro pumps have a hand-knob for manual stroke
length adjustment. Mounted on the side of the gearbox, the
hand-knob can be adjusted at any point (from 0 to 100%
stroke setting) by rotating the hand wheel as required. Stroke
length is locked during operation to prevent drifting. Loosen
the set screw to adjust the stroke rate and retighten after
adjustment. The indicator adjacent to the hand-knob displays
the output setting.
Adjustments can be made while the pump is at rest or
operating, although operating adjustments are easier to make.
Figure 23
IF THE PUMP IS EQUIPPED WITH A PRESSURE LEAK DETECTION SYSTEM, THE SYSTEM
MUST REMAIN SEALED AT ALL TIMES DURING PUMP OPERATION, WHETHER OR NOT LEAK
DETECTION IS REQUIRED. IF THE SEAL IS BROKEN, DECREASED FLOW AND/OR DIAPHRAGM
DAMAGE WILL OCCUR. SEE APPENDIX I FOR FURTHER INFORMATION
LEAK DETECTION DIAPHRAGM SYSTEMS REQUIRE SPECIAL HYDRAULIC PRIMING
CONSIDERATIONS TO PROTECT THE DIAPHRAGM FROM DAMAGE DURING INTIAL PUMP
STARTUP. SEE APPENDIX I FOR FURTHER INFORMATION.
7.2 Suction System
Before operation of any PulsaPro 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.
7.3 Priming the Pump Head
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 for five to ten seconds, while the pump is operating. Repeat as necessary until the pump
stabilizes at rated flow.
7.4 Priming the Reagent Head
o
Open the suction and discharge line shutoff valves
o
If the piping system design and the storage tank are such that the product flow 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.
o
If the installation involves a suction lift, it may be necessary to prime the reagent head and
suction line. Try priming the reagent headfirst. 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 to
the recommended specification.
o
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.
o
Filling of the suction line will necessitate the use of a foot valve or similar device at the end of
