Pulsafeeder Pulsar Shadow - Manual (Page 18)

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6. Startup Procedure
6.1 Output Adjustment
Figure 12
All PULSAR pumps have a hand-wheel for manual stroke length adjustment. Mounted atop the
eccentric box, the hand-wheel can be adjusted at any point (from 0 to 100% stroke setting) by pressing
down and then rotating the hand wheel as required. Stroke length is locked during operation to prevent
drift: pressing the hand-wheel down temporarily disengages the lock for adjustment; release after
adjustment automatically resets the lock at the new setting. An indicator adjacent to the hand-wheel
displays the output setting. Adjustments can be made while the pump is at rest or operating, although
operating adjustments are easier to make. Manual adjustment serves as a backup for pumps provided
with an optional DLC stroke length controller. If the control cover is removed and replaced, the bolts
should be tightened to 20-24 In-lb (225 – 270 N-cm).
If the pump is equipped with a vacuum leak detection system, vacuum must be maintained at
all times during pump operation, whether or not leak detection is required. If the proper level
of vacuum (between 10 in and 26 in. (250mm to 650mm) Hg) is not present, decreased flow
and/or diaphragm damage will occur. See Appendix I on page 33 for further information.
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 on page 33 for further
information.
Leak Detection Diaphragm systems require special hydraulic priming considerations to protect
the diaphragm from damage during initial pump startup. See Appendix I on page 33 for further
information.