F13 Series Ice Cream Cabinets Service and Installation Manual
For customer service, call (800) 733-8829, (800) 773-8821, (989) 773-7981, Fax (989) 773-3210, www.delfield.com
4
OPERATION
MAINTENANCE
Cleaning
The interior and exterior can be cleaned using soap and warm water.
If this is not sufficient, try ammonia and water or non-abrasive liquid
cleaner. When cleaning the exterior, always rub with the “grain” of
the stainless steel to avoid marring the finish. Do not use an abrasive
cleaner because it will scratch the stainless steel and plastic.
In order to maintain proper refrigeration performance, the condenser
fins must be cleaned of dust, dirt, and grease regularly. It is
recommended that this be done at least every three months. If
conditions are such that the condenser is totally blocked in three
months, the frequency of cleaning should be increased. Clean the
condenser with a vacuum cleaner or stiff brush. If extremely dirty, a
commercially available condenser cleaner may be required.
The compartment lids should be cleaned as required to maintain their
ability to seal properly. A bristle brush and solution of soap and water
should be all that is required to keep the lids clean. Do not use full
strength degreasing agents on the rubber parts as they can cause the
rubber to crack and become brittle.
Cleaning solutions need to be alkaline based or non-chloride
cleaners. Any cleaner containing chlorides will damage the
protective film of the stainless steel. Chlorides are also commonly
found in hard water, salts, and household and industrial cleaners. If
cleaners containing chlorides are used be sure to rinse repeatedly
and dry thoroughly upon completion. Routine cleaning of stainless
steel can be done with soap and water. Extreme stains or grease
should be cleaned with a non-abrasive cleaner and plastic scrub
pad. It is always good to rub with the grain of the steel. There
are also stainless steel cleaners available which can restore and
preserve the finish of the steels protective layer. Early signs of
stainless steel breakdown can consist of small pits and cracks. If
this has begun, clean thoroughly and start to apply stainless steel
cleaners in attempt to restore the passivity of the steel.
Defrosting
These units do not have an automatic defrost system. Defrosting
must be done manually after 3/8” frost accumulation. To defrost, turn
the power switch to OFF. Allow the frost to melt and mop up with a
sponge or soft cloth. When the defrost is complete, turn the power
switch back to ON.
Do not use sharp utensils to scrape frost because they
can damage important refrigeration components and
scratch or dent the liner.
Expansion Valve Location
The expansion valve location for remote and self-contained models is
located in the machine compartment of the unit.
Pressure Control
The temperature on self contained units is controlled by an
adjustable pressure control located in the machine compartment.
An adjustable control has the word COLDER near the knob, with
an arrow to indicate the adjustment direction. These controls
are field adjustable and do not require a service agent. If you
have any questions, feel free to contact the Delfield Service
Department.
In attempting to adjust the pressure control,
you can do damage to your unit by accidentally
adjusting the differential. Please make small
incremental adjustments if a temperature
adjustment is necessary, please contact the
service department at Delfield (800) 733-8829
or your local service agent. Delfield is not
responsible for charges incurred while having the
pressure control adjusted.
Factory recommended low-pressure control settings for
self-contained models are as follows:
Cut in 27# — cut out 11#
EPR valve for syrup rail is set at 65#
These units use a “cold wall” design — heat is
removed from the storage compartments through the
liner walls. Products next to or touching the walls of
the compartment will often be colder than items at
the center of the compartment. For best results, store
items loosely and keep them away from the side walls
as much as possible.
The units are not designed to reduce temperature
quickly. When overloaded with warm items, it may
take several hours to return to normal temperature,
Also, frequent or continuous opening of the lids can
affect the temperature in the storage compartment.
Freezer compartments
Freezer compartments are designed to hold ice cream
at 0°F to 5°F (-18°C to -15°C).
