13
Safenet III Operation
SEQUENCE OF OPERATION
DDSS-4MC / DDSS-4
Compressor
starts
Maximum Defrost
Time 40 Minutes
(Fallsafe)
Maximum Defrost
Time 40 Minutes
(Fallsafe)
Defrost Cycle
Terminates at
45° F.
Initial Defrost
Two hours After Start Up
Pulldown After Defrost
Compressor ON
Pull down
Compressor On
Compressor
Starts
Refrigeration Cycle
Compressor
Off Cycle
GREEN (REFRIGERATION)
GREEN (REFRIGERATION)
YELLOW (DEFROST)
RED (ALARM)
WARM
COLD
YELLOW (DEFROST)
RED (ALARM)
“OFF” POSITION
Safe-Net III Controller
DISPLAY
Start Up
OFF
ON
1
Compressor runs
continuously until it
reaches its cut-out setting.
Time to Subsequent Defrost
(6-Hours or Demand Defrost)
Time to Subsequent Defrost
(6-Hours or Demand Defrost)
Defrost cycle is temperature
terminated. Defrost initiates
two hours after start up.
When powered up there will
be a delay of 30 sec. at start
up before the compressor starts.
3
4
5
1A
2
1. Apply power to the merchandiser. Wait for the self
check to complete. During the self check, each LED
flashes for one second and then all LEDs turn on for
two seconds If the LEDs do not flash, make sure the
adjustment knob is not in the "OFF" position.
1A.The merchandiser temperature displays at startup.
The initial defrost starts two hours later. The display
will show the temperature at the start of defrost.
This reading will remain displayed during defrost
and until it times out, even though the refrigera-
tion mode has been initiated. (The green LED will
be lit.)
2. The compressor will start after a 30 second delay
once power is applied.
3. The compressor will continue to run until it reaches
its cut-out temperature (Pulldown).
4. The refrigeration cycle will continue for the next
subsequent scheduled (5-hours) or demand de-
frost.
5. The above process will repeat (steps 3 and 4) until
the power is interrupted.
6. If power stops, the process will start over at step 1,
and the time to subsequent defrost will reset.
Summary of Contents for Chino MPC-ET Series
Page 16: ...16 Safenet III Operation ...
