Materials Of Construction; Adjusting The Pump Cycle Counter - QED AutoPump AP-2 Operation Manual

AP-2 Manual

Materials of Construction

QED PCCs are made of the following:
• Anodized Aluminum
• Stainless Steel
• Engineering Plastics
Pump Cycle Counter Weight - 0.4 lbs (0.2 kg)

Adjusting the Pump Cycle Counter

Note:
To get the most reliable performance, adjust the counter after it is installed
and the pump is running. Typically, the Display Assembly that holds the
digital readout is set 1/2-inch (13mm) from the upstream hex. Before
adjusting the PCC be sure there is no air leak downstream of the counter. A
leak could influence the travel of the magnet shuttle when the pump cycles.
STEP 1 -
STEP 2 -
STEP 3 -
STEP 4 -
STEP 5 -
Revision 7 - August, 2007
Loosen, but do not remove, the thumb screw (item #3) that locks the
Display Assembly. (See Figure 36)
Slide the Display Assembly on the magnet housing (item #6) (back and
forth or up and down as the case may be) while the pump is cycling
until the digital display (item #4) advances once per pump cycle.
Slowly slide the Display Assembly upstream towards the air source
until the digital display (item #4) stops counting. Using a pencil, mark
this point on the magnet housing (item #6).
Slowly slide the Display Assembly in the opposite direction, towards
the pump, past where the counting occurs until the digital display (item
#4) stops counting. Using a pencil, mark this point on the magnet
housing (item #6).
Position the Display Assembly between the two extremes where
counting did not occur. Lock the Display Assembly in place with the
thumb screw. (item #3)
Appendix F: Pump Cycle Counter
• Brass
• Viton
Page 89