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5
V
ENTING FAN REPLACEMENT
Venting fan replacement
■
Remove a venting fan
1.
Remove power from the sign. Note there may be more than one power source present.
2.
Open the sign. See "Opening a sign" on page 5-1.
3.
Turn the sign breaker to the OFF position. Note there may be more than one breaker in a sign.
4.
Locate the fan to be replaced.
5.
Disconnect the wire harness from the failed fan.
6.
Loosen the four screws holding the fan in place.
7.
Remove the fan.
Install a replacement venting fan
1.
Reattach the fan wire to new fan taking care not to bend pins on fan.
2.
Reattach the fan to the bracket with four screws.
3.
Return power to the sign. Do not close the sign.
4.
Test the fan.
Use a heat gun directed at the fan thermostat to verify fan operation. The thermostat must be heated to 85ºF (29.4ºC) to
initiate fan operation.Verify the fan is blowing in the correct direction (upper fan right, lower fan left).
Note: Move the heat gun around to prevent the wiring from burning.
5.
Return power to the sign.
5-14
A
X
LPHA
PRESS
2020 RGB F
A
F
-M
RONT
CCESS
ULL
D
S
O
ATRIX
ISPLAYS
IGN
PERATION AND
Loosen four screws
M
M
(PN 1523610201
AINTENANCE
ANUAL
. B)
REV
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