QED AutoPump AP-2, Operation Manual

Page: 95 / 111

Page 87
AP-2 Manual
Appendix F: Pump Cycle Counter
Revision 7 - August, 2007
Pump Cycle Counter Operation/Installation
When a pneumatically operated pump such as the QED AutoPump® has filled,
it triggers itself “On”. This allows air to flow to the pump until a certain volume
of fluid has discharged. The air stops; the pump fills; then the cycle continues
to repeat.
A PCC mounted between a filter/regulator and a pump senses air flow to the
pump. In a piston-like action, the internally located magnet shuttle moves
forward (in the direction of air flow) during the “On” pulse and returns to a
seated position in the “Off” period. (See Figure 35)
The digital display senses the completion of this “to-and-from” movement and
records the cycle, increasing the number one digit that is shown in the clear
plastic display.
This process repeats itself for each pump cycle.
Note:
The PCC will not function properly beyond certain distance limits from
the pump, or, above or below optimum air line diameters. Safe limits are
as follows:
AP-4: 250 ft. maximum with 1/4 inch or 3/8 inch ID air hose.
AP-3: 150 ft. maximum with 1/4 inch or 3/8 inch ID air hose.
AP-2: 75 ft. maximum with 1/4 inch or 3/8 inch ID air hose.
Contact QED for advice.
Digital Display
The digital display has the following features:
• A six digit counter that counts from 0 - 999,999 before resetting itself.
• A clear viewing lens that is water-and-impact resistant.
• Optional : Switch for remote electronic readout available upon
request. (See Figure 37)