Delfield Meridian MHR1-G, Service And Installation Manual

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Meridian Series
®
Reach-Ins Service and Installation Manual
For customer service, call (800) 733-8829 or (800) 733-8948, Fax (989) 773-3210, www.delfield.com
10
Meridian Series
®
Reach-Ins Service and Installation Manual
11
For customer service, call (800) 733-8829 or (800) 733-8948, Fax (989) 773-3210, www.delfield.com
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 ALL food products from any stainless steel surface. Common
items include, tomatoes, peppers and other vegetables.
For proper start up, verify that the thermostat is in the OFF position
prior to connecting the unit to its power source. This will eliminate
any possible electrical issues. Failure to start the unit with the
thermostat in the OFF position could lead to motor failures as well as
other electrical component failure.
The thermostat also has an OFF position that disconnects power to the
condensing unit, keep in mind the evaporator fans and lights will still
have power while the thermostat is in the OFF position. On freezer
units the lights and defrost timer will still have power as well as the
condensate heating elements. During normal operation the freezer
temp is preset at approximately 0°F and the refrigerator is preset at
approximately 37°F.
ELECTRONIC CONTROLS ONLY
After plugging the unit in and turning the power switch to ON the
unit will then begin to operate. For standard units verify that the
thermostat is in the off position prior to plugging the unit in. Once
power is connected the thermostat can be set to the 3 or 4 position
for normal operation.
1. Turn the main power switch, located on the top of the control box
to the ON position. Turn the night position switch, on the front of
the control box, to the ON position.
2. Adjust the temperature control to the desired temperature.
The green area on the scale represents the optimum food holding
temperature zone of 150°F to 170°F (66°C to 77°C). When the cabinet
is warmed up and the temperature stabilized, the cabinet temperature
will normally stay within a few degrees of the temperature control
set point. The display shows a precise measurement of the actual air
temperature within the cabinet, not an average reading. Therefore,
it is not unusual to see the temperature vary when the doors are
opened. The quick response of the heating system combined with the
precision temperature readings provide very accurate control of the
cabinet temperature.
3. The light switch (on the glass door models only) controls the
display lights inside the cabinet.
The unit is now operating and the display will continually show the
current interior cabinet temperature. The night power switch on the
front of the control box should be used to turn the unit off at night.
This removes latent heat from the heated module preventing high limit
lock out. If desired, the main power switch can be turned to the off
position once the fan has turned off. Approximately 3 minutes.
The cabinet interior is very hot! Avoid direct contact
with skin; use appropriate protective apparel,
such as gloves. The area near the heating duct
will be hotter than the rest of the cabinet. Never
operate the unit without the duct in place. Use
only containers and materials suitable for high
temperature applications. Never store combustible
materials near the heating appliance.
Removal of the Heated Module
1. Disconnect power.
2. Disconnect power harness.
3. Remove module from unit.
W AR E
OPERATION INFORMATION
OPERATION INFORMATION (HEATED MODELS)
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
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 or discoloration.
Proper cleaning of stainless steel requires soft cloths or plastic
souring 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
MAINTENANCE