Medivance Arctic Sun Stat, Руководство по обслуживанию

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43
English
The current Service Manual can be found at www.medivance.com/manuals
8.16 Replace the AC PCB
1. Remove the power supply per step 8.15.
2. Disconnect the AC breaker harness, power supply
jumper, lower main harness, chiller pump harness,
chiller harness, and the heater harness from the AC
PCB.
3. Using needle nose pliers, carefully disconnect the
two (2) spade terminals connected to the top
of power inlet module. Carefully feed the wires
through the opening in the sheet metal prior to
removing circuit card.
4. Using a phillips head screwdriver, remove the four
(4) screws connecting the AC PCB to the lower
bracket.
5. Mount the new AC PCB back to the frame using the
four screws.
Note : When installing, reconnect the lower main
harness and chiller pump connections first.
6. Route the two (2) power inlet wires through the
opening and reconnect them to the power inlet
module. Note the orientation of the wires (see
figure 8-39).
7. Reconnect the AC breaker harness, chiller harness
lower main harness, chiller pump harness, and
heater harness, if not already connected.
8. Reinstall the power supply, ensure the two (2)
ground wire ring terminals are installed with the
upper right screw on the circuit card.
9. Reinstall the jumper to the AC PCB and connect
the two (2) lower main harness connections on the
power supply board.
Fig 8-39 Placement of power inlet wires
(blue on left, red on right)
Fig 8-40 AC PCB
8.17 Repairs Requiring removal of the Upper Components
Tools and Supplies required:
• 7/16” (11mm) nut driver
The following repairs will require the removal of the Upper
Components via the following steps.
1. Using a 7/16” (11mm) nut driver,disassemble
the connector panel assembly from the frame by
removing the (2) screws on either side of the panel.
Gently suspend the panel by the wiring harness.
2. Using a 7/16” (11mm) nut driver, remove the two
(2) screws on the front of the device holding the
upper bracket to the lower bracket.
3. Using a 7/16” (11mm) nut driver, remove the four
(4) screws on the back of the device holding the
upper bracket to the frame.
4. Remove L tube, connected to the top of the chiller
evaporator, from the tank and push off to the side.
5. Carefully pull up on the upper bracket, leaving the
front in contact with the lower half to prevent the
wire harnesses from getting damaged. It may be
necessary to flex the chiller frame out slightly in
order to clear the flanged sheet metal.
Fig 8-41 Remove screws on front of device (step 2)
Fig 8-42 Remove screws on back of device (step 3)