Maintenance – Delfield Refrigerators and Freezers User Manual

Page 6

ColdPro Service and Installation Manual

For customer service, call (800) 733-8829, (800) 733-8821, Fax (989) 773-3210, www.delﬁ eld.com

MAINTENANCE

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 sufﬁ cient, try ammonia and water or a non-

abrasive liquid cleaner. When cleaning the exterior, always

rub with the “grain” of the stainless steel to avoid marring the

ﬁ nish.

Do not use an abrasive cleaner because it will scratch the

stainless steel and can damage the breaker strips and gaskets.

Cleaning the Condenser Coil

The condenser coil requires regular cleaning, recommended

is every 90 days. In some instances though you may ﬁ nd

that there is a large amount of debris and dust or grease

accumulated prior to the 90 day time frame. In these cases the

condenser coil should be cleaned every 30 days.

If the build up on the coil consists of only light dust and debris

the condenser coil can be cleaned with a simple brush, heavier

dust build up may require a vacuum or even compressed air to

blow through the condenser coil.

If heavy grease is present there are de-greasing agents

available for refrigeration use and speciﬁ cally for the condenser

coils. The condenser coil may require a spray with the de-

greasing agent and then blown through with compressed air.

Failure to maintain a clean condenser coil can initially cause

high temperatures and excessive run times, continuous

operation with dirty or clogged condenser coils can result in

compressor failures. Neglecting the condenser coil cleaning

procedures will void any warranties associated with the

compressor or 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.

In order to maintain proper refrigeration performance, the

condenser ﬁ ns 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 of 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 ﬁ lm 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 ﬁ lm

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 ﬁ lm 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 ﬁ nish 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 ﬁ nish. Be sure to

clean the stainless steel surfaces of ALL food

products. Common items include, tomatoes,

peppers and other vegetables.