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Circulating fan replacement
■
Hazardous voltage. Contact with high voltage may cause death or serious injury.
WARNING
Always disconnect power to unit prior to service.
Remove a circulating 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 two screw on the right side of the fan.
7.
Remove the fan.
8.
Remove the fan wire carefully.
Install a replacement circulating fan
1.
Replace fan wire taking care not to bend the pins.
2.
Place replacement fan in the bracket.
3.
Tighten the nuts to secure the fan.
4.
Return power to the sign. Do not close the sign.
5.
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.
6.
Close the sign.
.
A
X
2020 RGB F
LPHA
PRESS
RONT
A
F
-M
D
S
CCESS
ULL
ATRIX
ISPLAYS
Loosen two
screws
O
M
IGN
PERATION AND
AINTENANCE
C
IRCULATING FAN REPLACEMENT
. B)
M
(PN 1523610201
ANUAL
REV
5
5-13
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