Handleiding
Je bekijkt pagina 22 van 32
22 Part Number: 9295093 07/23
Operation Section 3
heavy usage. When the controller enters the defrost mode
the compressor is shut off and will remain off until the
evaporator coil temperature exceeds 41°F or the controller
reaches a time limit of 50 minutes. The defrost cycle can last
from a minimum of 2 minutes to a maximum of 50 minutes.
Evaporator Fan Operation
Salad and mega top refrigerator units under 60” wide have
one evaporator and one axial fan. 60”, 64” and 72” wide units
have one large evaporator and two axial fans.
Cooling Cycle Defrost Cycle
Compressor On Compressor Off Compressor Off
Evaporator Fan Evaporator Fan Evaporator Fan
On On three minutes
the off three
minutes
On
During normal operation the evaporator fan may cycle
and/or pulse independently of the compressor. Consult
the service manual or contact Technical Support at
1-844-724-CARE if you are unsure of the proper
function.
R290 Freezer
Freezers are factory set at mid-range to maintain about -2°F
(-19°C) box temperature.
1. At initial start-up or anytime power is disconnected, then
reconnected to the unit, the control will go into defrost
mode
2. The control will enter a DEFROST mode and the display
will read dEF. The compressor and condenser fan as well
as the evaporator fan will remain off until this initial
defrost is complete. This initial defrost cycle may take up
to 35 minutes to complete.
3. The display will continue to read dEF for an additional 30
minutes while the freezing cycle cools the box to the set
temperature.
4. Then the thermostat will display box temperature.
5. The temperature control will cycle the compressor,
evaporator fan motor and condenser fan motor to
maintain box temperature at the control setting. For
more information see R290 Evaporator Fan Operation on
page 23.
R290 Freezer Automatic Defrost
The control also monitors compressor total running time
and will enter a defrost cycle after total compressor running
time is greater than seven hours since the last defrost cycle
OR if evaporator coil temperature drops below -30°F (-34°C)
(indicating excessive frost on the coil).
R290 Freezer Manual Defrost
If a manual defrost is desired, hold the upper left button for
five seconds or unplug the unit for several seconds, then plug
unit back in. This will cause the control to re-initialize and
then enter a defrost cycle.
When the control enters the defrost mode, it switches off the
evaporator fan motor, compressor and condenser fan motor,
and switches on the defrost heater to warm the evaporator
coil. Thereby melting all frost accumulated during the
previous refrigeration cycle. The digital temperature display
will now read dEF. The control will continue the defrost
cycle for a MINIMUM of six minutes and a MAXIMUM of 35
minutes depending on the amount of frost accumulated on
the evaporator coil.
After the defrost cycle is complete, the control returns to
a normal refrigeration cycle, however the evaporator fan
motor will not switch on until the evaporator reaches -5°F
(-21°C) or two minutes AFTER the compressor and condenser
fan motor have begun operating. The digital temperature
display will continue to read dEF until the evaporator
has returned to normal freezing temperatures (up to 30
minutes).
CONTROL & DISPLAY
R290 TEMPERATURE CONTROL & DISPLAY
Control Display
Operation / Indication
Status Displayed Comments
Normal (°C) Temp. [°C] Unit depends on setting
(parameters in control)
Normal (°F) Temp. [°F]
Show set-point Temp.
Set to Defrost dEF / Temp Depends on setting
(parameters in control
or as chosen by upper
left button)
Sensor 1 defect
E01
X Air sensor
Sensor 2 defect
E02
X Coil sensor
Sensor 3 defect
E03
X Open
Sensor 4 defect
E04
X Open
Bekijk gratis de handleiding van Delfield STD4448NP, stel vragen en lees de antwoorden op veelvoorkomende problemen, of gebruik onze assistent om sneller informatie in de handleiding te vinden of uitleg te krijgen over specifieke functies.
Productinformatie
| Merk | Delfield |
| Model | STD4448NP |
| Categorie | Koelkast |
| Taal | Nederlands |
| Grootte | 8695 MB |
