Instruction 0024-9435
35
Fyrite Tech
5.9 Pump Assembly Replacement
Material Required:
• CO Sensor, P/N 0024-7265
• #1 Phillips Screwdriver
Procedure:
1. Disassemble the analyzer as follows:
a. Remove the battery cover and the batteries, uncovering one of the
cover hold-down screw.
b. Remove and set aside all four cover hold-down screws.
c. With the analyzer on its back, remove the front cover, laying it
face down to the left of the body.
d. Remove the battery connector from top of circuit board. Then
carefully remove the circuit board laying it face down in the top
cover.
2. Remove the pump motot's electrical connector from the circuit board.
3. Unscrew the pump's hold down clamp and remove it from the pump
(see Figure 5-3). Make note of how the pump wiring is routed.
4. Make note of how the tubing connects to the pump, and then care-
fully remove tubing from pump.
5. Remove the old pump and discard.
6. Mount the new pump using the hardware removed in Step 3.
7. Install tubing as was noted in Step 4, being careful not to pinch or
crimp the tubing.
8. Connect the pump's electrical connector to the circuit board, routing
the wiring as was noted in Step 3 (observe polarity, see Figure 5-4).
9. Reassemble the analyzer.