McCall Refrigeration MCCSTR48 Benutzerhandbuch

9

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 plastic and can damage the breaker strips 

and gaskets.

The condenser coil requires regular cleaning, recommended is 

every 90 days.  In some instances though you may find 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 specifically 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.

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.

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.

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.

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