Air Curtain Refrigerator Service and Installation Manual
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6
Maintenance
Door Gasket Maintenance
Door gaskets require regular cleaning to prevent mold and
mildew build up and also to retain the elasticity of the gasket.
Gasket cleaning can be done with the use of warm soapy water.
Avoid full strength cleaning products on gaskets as this can
cause them to become brittle and crack. Never use sharp tools
or knives to scrape or clean the gasket. Gaskets can be easily
replaced and do not require the use of tools or an authorized
service person. The gaskets are “Dart” style and can be pulled
out of the groove in the door and new gaskets can be “pressed”
back into place.
Caster Maintenance
Wipe casters with a damp cloth monthly to prevent corrosion.
The power switch must be turned to OFF and the
unit disconnected from the power source whenever
performing service, maintenance functions or cleaning
the refrigerated area.
Refrigerators and Freezers
The interior and exterior can be cleaned using soap and warm
water. If this isn’t sufficient, try ammonia and water or a
nonabrasive 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 can damage the breaker strips and gaskets.
Stainless Steel Care and Cleaning
To prevent discoloration or rust on stainless steel several
important steps need to be taken. First, we need to understand
the properties of stainless steel. Stainless steel contains 70- 80%
iron, which will rust. It also contains 12-30% chromium, which
forms an invisible passive film over the steel’s surface, which
acts as a shield against corrosion. As long as the protective
layer is intact, the metal is still stainless. If the film is broken
or contaminated, outside elements can begin to breakdown the
steel and begin to form discoloration or rust. Proper cleaning
of stainless steel requires soft cloths or plastic scouring pads.
NEVER USE STEEL PADS, WIRE BRUSHES OR SCRAPERS!
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. 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. Always rub with the grain of the steel.
There are stainless steel cleaners available which can restore
and preserve the finish of the steels protective layer. Early signs
of stainless steel breakdown are 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.
Never use an acid based cleaning solution! Many
food products have an acidic content, which can
deteriorate the finish. Be sure to clean the stainless
steel surfaces of ALL food products. Common items
include, tomatoes, peppers and other vegetables.
Cleaning the Condenser Coil
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.
Failure to maintain a clean condenser coil can initially cause high
temperatures and excessive run times. Continuous operation
with a dirty or clogged condenser coil can result in compressor
failure. Neglecting the condenser coil cleaning procedures will
void any warranties associated with the compressor and cost to
replace the compressor.
Never use a high-pressure water wash for this
cleaning procedure as water can damage the electrical
components located near or at the condenser coil.
Doors/Hinges
Over time and with heavy use doors the hinges may become
loose. If this happens tighten the screws that mount the hinge
brackets to the frame of the unit. Loose or sagging doors can
cause the hinges to pull out of the frame, which may damage
both the doors and the hinges. In some cases this may require
qualified service agents or maintenance personnel to perform
repairs.
Preventing blower coil corrosion
To help prevent corrosion of the blower coil, store all acidic
items, such as pickles and tomatoes, in sealable containers.
Immediately wipe up all spills.
Continuous opening and closing of the doors will hamper the
unit’s ability to maintain optimum refrigeration temperature. Top
section is not intended for overnight storage.
Over shelves and other items mounted to the top of the counters
should never be installed in the field due to the potential damage
to the refrigeration system.
