Maintenance - Delfield 6100XL Service, Installation And Care Manual

6000XL Series Service and Installation Manual
Maintenance, continued
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.
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.
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 steels 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 rust of discoloration.
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 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.
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.
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Gasket Maintenance
Gaskets require regular cleaning to prevent mold and mildew
build up and also to keep 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 prevent proper seals. Also, never
use sharp tools or knives to scrape or clean the gasket which
could possibly tear the gasket and rip the bellows.
Gaskets can easily be replaced and do not require the use of
tools or authorized service persons. The gaskets are "Dart"
style and can be pulled out of the grove in the door and new
gaskets can be "pressed" back into place.
Doors/Hinges
Over time and with heavy use doors the hinges may become
loose. If it is noticed that the door is beginning to sag, it may
become necessary to tighten the screws that mount the hinge
brackets to the frame of the unit. If the doors are loose or
sagging this can cause the hinge to pull out of the frame which
may damage both the doors and the door hinges. In some
cases this can require qualified service agents or maintenance
personnel.
Drain Maintenance
Each unit has a drain located inside the unit which removes the
condensation from the evaporator coil and evaporates it at an
external condensate evaporator pan. Each drain can become
loose or disconnected from moving or bumping the drain. If you
notice excessive water accumulation on the inside of the unit be
sure the drain tube is connected from the evaporator housing
to the condensate evaporator drain pan. If water is collected
underneath the unit you may want to check the condensate
evaporator drain tube to be sure it is still located inside the
drain pan. The leveling of the unit is important as the units are
designed to drain properly when on a level surface, if your floor
is not level this can also cause drain problems. Be sure all drain
lines are free of obstructions, typically food product is found
blocking drain lines causing water to back up and overflow the
drain pans.
Fluorescent Light Bulb Replacement
Delfield recommends that fluorescent light bulbs be recycled
rather than disposed of.
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