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Disconnect the threaded pick-up at the top of the flow meter and pull the flow meter out of the MCS
12.
unit.
Remove the threaded pick-up and cable from the MCS unit, and disconnect from the connector
13.
labeled X14 on the water group controller.
To replace this component, see "Replacing the flow meter (on page 117)."
Replacing the flow meter
NOTE:
NOTE:
the top of the flow meter. For information concerning the installation of the paddle-wheel
sensor, see Replacing the flow meter paddle-wheel sensor (on page 57).
Insert the two fiber gaskets on either side of the flow meter.
1.
IMPORTANT:
to ensure proper water flow.
Insert the flow meter back into place on the water line.
2.
Using the 46-mm wrench (included in the miscellaneous hardware kit), tighten the two union nuts to
3.
secure the flow meter to the water line.
Route the flow meter paddle-wheel sensor cable through to the front of the MCS unit.
4.
Connect the flow meter paddle-wheel sensor cable connector to the connector labeled X14 on the
5.
water group controller.
Replace the AC transfer switch
6.
Replace the magnetic solenoid valve
7.
Replace the bottom heat exchanger unit
8.
63).
This procedure is specifically for the replacement of the Type 2 flow meter.
The Type 2 flow meter should arrive with the paddle-wheel sensor already installed in
Be sure the arrow on the flow meter is pointing toward the rear of the MCS unit
("Replacing the AC transfer
switch" on page 28).
("Replacing the magnetic solenoid
("Replacing the heat exchanger unit with
Technician repair removal and replacement procedures 117
valve" on page 84).
couplers" on page
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