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P/N 3141959_C
CONTROLLER OPERATION
The electronic controller is located in the
cassette compartment .
Controller Electrical Box
The controller comes factory set, and is ready
for use . The front grille must be removed in
order to access this control . When removing
the grille for this operation or for condenser
cleaning, care must be taken not to damage the
display interface cable . It may be unplugged
during this task .
1 . Plug the merchandiser plug into its receptacle .
a . The controller display will illuminate .
b . The interior light will illuminate .
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
2 . After the control preprogrammed time
delay of up to 6 minutes, the compressor and
evaporator fan(s) will start if the control is
calling for cooling .
3 . The control will cycle the compressor but
may also cycle evaporator fan(s) on and off
determined by the setpoint and differential
temperatures .
a . The setpoint is the adjustable
preprogrammed temperature .
b . The differential is the non-adjustable
pre-programmed temperature .
c . The control is designed to read and
display a cabinet temperature not a
product temperature .
This cabinet temperature may reflect the
refrigeration cycle of the setpoint and it's
differential . The most accurate temperature on
a cabinets operation is to verify the product
temperature .
FNGSC-A Self Contained Merchandisers
3-3
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