Gasboy 9800A - Manual

064726 Rev. 1121
OPTICAL ENCODER REPLACEMENT
FOR SERIES 9800A/2600A, 9820A/2620A
Read Important Warnings and Safeguards, 035282 prior to working on your dispenser
1. Remove 4 bolts securing the top cover for the pulser. Use care to prevent nicks or scratches on the mating
surfaces between the top cover and the pulser body (this is a UL flame path).
2. Remove the cotter pin that engages the pulser shaft to the plastic gear.
3. Disconnect the connector from the top of the optical encoder.
4. Grasp the rectangular body of the optical encoder and turn CLOCKWISE to loosen. These are LEFT
HAND THREADS. Remove optical encoder from assembly
5. Slide fiber washer over the new encoder shaft and install the encoder by turning COUNTER-CLOCKWISE.
Tighten securely by hand.
6. The optical encoder comes in two different styles. The function of these is the same, however their physical
shapes are slightly different. Before reinstalling the connector, determine the type of optical encoder that
you have.
•
If the encoder has a silver metal housing, the connection
should be made so that the wires are routed over the top of
the encoder (Fig. 1)
•
If the encoder has a black plastic housing, the connection
should be made so that the wires are routed around the side
of the encoder (Fig. 2). The position of the encoder pins will
vary depending on where they are when the encoder is in its
tightened position. In some cases, it is possible that the wire
leads are too short to allow the connector to reach. If this
occurs, try a different encoder. If this still does not resolve the
issue, you must replace the entire pulser/conduit assembly
rather than just the optical encoder.
7. Reinstall the cotter pin and bend in a manner that does not cause
interference with the top of the gear that drives the pulser shaft
(Fig. 3).
8. Reassemble top cover ensuring that the connector wires are not
pinched in the mating surface.