Hubbell ETXA Series, Описание, установка и руководство по эксплуатации, Страница: 43 / 52

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Triac:
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Disconnect power.
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Open door.
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Disconnect the wire from the failed triac.
NOTE: Replacement triacs come with replacement wires attached
but are not used in this application.
•
Remove the two (2) nuts securing the triac to the heatsink and
remove the triac. Please note the triac orientation, one
terminal (the triac gate) is narrower than the others.
•
Spread a pea sized amount of the conductive thermal paste included with the
replacement kit on the back of the triac to be installed.
•
Install the replacement triac in the correct orientation to the heatsink with the two (2) nuts
removed previously.
•
Reconnect the wire from the heating element, the wire from the power distribution
block or magnetic contactor (as applicable), and the wire from the temperature
controller.
•
Close door.
•
Turn on power.
Flow Meter:
•
Disconnect power.
•
Shut off cold water inlet and hot water outlet
valves.
•
Drain unit.
•
Open door.
•
Disconnect the flow meter wires from the
controller.
NOTE: The display may need to be removed to access the wires from the flow meter.
The display can be removed by removing the four (4) screws securing the display to
the controller standoffs and then pulling the display from the socket.
•
Disconnect the cold water supply pipe from the quick-connect fitting. See
Disconnecting a Joint in Section III.
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Unscrew the two union couplers from the flow meter.
•
Slide the replacement flow meter into the inlet piping and tighten two union couplers
to the new flow meter.
NOTE: When installing flow meter make sure arrow is pointing in the direction of the
water flow.
•
Connect the flow meter wires to the controller on terminal JP6, WHITE / GREEN /
BROWN .
•
Close door.
•
Open the cold water inlet and hot water outlet valves.
•
Bleed air from the unit. See Checking for Leaks and Purging Air in Section III.
•
Turn on power.