18600 and CTP-NB Series Service and Installation Manual
10
The unit is equipped with one ON/OFF switch located on the right
end of the unit. The unit’s com pres sor will begin op er at ing when
this switch is turned to the
ON
position. Tem per a ture ranges for the
rail are 33°F to 41°F (1°C to 5°C).
Product located in the rail must be removed at the
end of day. This allows you to turn the rail OFF at
night to save energy and the rail will have time to
defrost as needed.
A minimum of one hour of off time per day with the pans removed
from the rail is required to properly defrost the rail.
The power switch must be turned to OFF and the
unit disconnected from the power source whenever
performing service or maintenance functions.
Never operate the unit without the louvered panel in
place!
CAUTION
Operation: CTP-NB Series
Operation: 18600PDL Series
Product should be loaded into the unit with care.
Failure to heed these recommendations could result in
damage to the interior of the cabinet or the blower coil.
This unit is equipped with two ON/OFF switches located behind the
louvered machine compartment panel. The unit’s com pres sor and all
evaporator fans will begin op er at ing when the main power switch is
turned to the
ON
position. Tem per a ture ranges for the base are 36°F
to 40°F (2°C to 4°C).
The switch labeled rail is for the raised rails. The rail switch is
accessible through a 1.5” (3.8cm) diameter hole in the louvered
panel. Turning this switch to the
ON
position will activate the
refrigeration for the rails. Temperature ranges for the raised rails are
33°F to 41°F (0.5°C to 5°C).
Product located in the rails must be removed at the end
of day. This allows you to turn the rails off at night to save
energy and the rails will have time to defrost as needed.
A minimum of one hour of off time per day with the pans
removed from the rails is required to properly defrost the
rails.
The power must be turned to OFF and the unit
disconnected from the power source whenever
performing service or maintenance functions.
Never operate the unit without the louvered panel in
place!
All R404A models have a high pressure limiting device. Under
severe overloading conditions, or in the event of a condenser fan
failure or a plugged or blocked condenser, this device may shut
down the refrigeration system. This device will automatically reset,
but determining the cause of the high pressure condition should be
investigated by a qualified refrigeration technician.
Refrigerator Evaporator Fan Operation
When the refrigerator is initially powered up or immediately following
a power outage the unit will begin cooling after a 3-6 minute delay.
During normal operation the evaporator fan pulses independently of
the compressor as dictated by the controller as follows:
1. During the cooling mode, compressor and evaporator fan run
simultaneously.
2. During the compressor off mode, evaporator fan pulses three
minutes on and three minutes off.
3. During an actual defrost event other than the off-cycle defrost,
compressor stays off but the evaporator fan runs continuously.
Cooling Cycle
Defrost Cycle
Compressor On
Compressor Off
Compressor Off
Evap Fan
On
Evap Fan
Off
Evap Fan
On
Evap Fan
Off
Evap Fan
On
Evap Fan
Off
X
Cycles On 3-Min, Off
3-Min
X
DANGER
CAUTION
