Amana AVZC20 Series Service Instructions Manual page 10

REPLACING THE BOARD (2, 3, and 4 TON ONLY)
HIGH VOLTAGE !
D ALL
ISCONNECT POWER BEFORE SERVICING OR
. M
INSTALLING ULTIPLE POWER SOURCES MAY BE
. F
PRESENT AILURE TO DO SO MAY CAUSE PROPERTY
,
DAMAGE PERSONAL INJURY OR DEATH
W
HEN REPLACING THE ELECTRICAL BOARD
. B
HATCHED AREAS EFORE INSTALLING THE NEW ELECTRICAL BOARD
SURE TO WIPE THE GREASE OFF THE REFRIGERANT TUBING
CAUTION TO NOT DAMAGE THE ELECTRICAL CONNECTIONS
D .
ISCONNECT AS NEEDED
Uninstall the electrical board
When uninstalling the main electrical board, remove the screws
holding the cover in place. If board replacement is attempted with-
out following proper uninstallation procedure, the refrigerant
piping might be damaged. Always replace the grease with new
grease on heat sink used for cooling. Not replacing grease may
result in insufficient cooling and may damage the electrical board.
1. Remove the fixing screw A.
2. Lift the cover and open it in the direction shown in the figure.
3. Remove fixing screws B affixing the sheet metal plate.
4. Carefully slide the sheet metal plate with the electrical board
behind the refrigerant tubing as shown.
10
WARNING
.
CAUTION
, NOT
DO TOUCH THE
. E
XERCISE
.
Install the electrical board
When working on a service port, ensure that no refrigerant and/or
compressor oil is sprayed onto the electrical board. This could
damage the board's functionality.
1. Wipe the stale grease completely from the installed piping. If
you reinstall the electrical board, make sure to wipe clean the
heat sink on the board. Coat the surface with the standard
quantity of the specified new grease.
2. Carefully slide the sheet metal plate back in and fix the screws
B.
,
BE
3. Do not apply force to the parts on the PCB. Hold the PCB plate
NOT the PCB.
4. Ensure that the liquid tube does not come in contact with any
part of the PCB assembly.
5. Gently fit the tube in the heat sink troughs. Ensure good con-
tact.
6. Close the cover, slide it downwards, fix it with the nails (two
nails) and tighten fixing screws A so that the piping is tightly
connected.
.20
.20
Use the grease that
is provided with the
service parts
Make sure
that you are
coating
evenly