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P/N 0515388_E
INSTALLER
It is the contractor's responsibility to
install merchandiser(s) in accordance with
all local building and health codes.
Safe-NET III™
TEMPERATURE AND DEFROST
CONTROLLER
SAFE-NET III™ USER INSTRUCTIONS
Your refrigerated case uses a Hussmann
Safe-NET™ III temperature and defrost
controller to precisely maintain the tempera-
ture and prevent frost buildup on the cooling
coil. LEDs indicate when the compressor or
refrigeration is on, when the case is in a defrost
cycle, if the temperature is outside the desired
range, or if there is a sensor failure.
An adjustment knob allows the temperature to
be set within the configured range and can
power off the controller and compressor. Your
controller has been custom-configured to pro-
vide the best temperature and defrost control
for your chilled or frozen food.
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 U.S.A.
START UP / OPERATION
The front of the controller has an adjustment
knob and status LEDs. The back of the
controller has connections for sensors and
switched equipment.
The Safe-NET III controller includes the
following features and connections.
• Adjustment knob:
• Controller LEDs:
Adjusts the temperature setpoint.
Turn adjustment knob to OFF to turn off
refrigeration system. Unplug merchandiser
from power before servicing the unit.
Compressor Powered On LED (green):
Lights while the compressor is running or
the refrigeration valve is open.
Defrost Cycle LED (yellow):
Lights while the refrigeration coil is
defrosting.
Temperature or Sensor Alarm (red):
Lights if the temperature is too warm or
too cold. Flashes if a sensor fails.
3-1
SHM Merchandisers
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