Dinex DXIRAC12LS Manuale d'uso e manutenzione - Pagina 5

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MAINTENANCE

The Air Screen Refrigerator was designed to operate at a

range of 34 F (1 .11 C) to 40 F (4 .44 C) . The pull down time

(time required to go from room temperature to 36 F) is

approximately 40 minutes .

The Air Screen Refrigerator operates basically the same as

other refrigerated carts, except it maximizes air flow through

special ducts . The thermostat monitors the cart tempera-

ture and turns the condensing unit on when above setpoint

temperature . The condensing unit then condenses the

refrigerant to create the cold air, which is cycled through the

evaporator located in the top housing for the 1/2HP unit

and on the back of the cabinet for the 1/3HP unit . The two

center fans, which are always on, then circulate air through

the evaporator cold coils and into the cart . When the cabinet

reaches the set temperature the thermostat turns the con-

densing unit off . Moisture is removed from the air when the

condensate unit is energized . When this occurs, the mois-

ture will drip into the pan located beneath the evaporator .

The moisture then drains down to the condensate evapo-

rator, which boils the water away . When the cart door is

opened, the two outer fans turn on and increase the air flow .

This increased airflow through the ducts cause a screen of air

across the cabinet holding the cold air inside .

IMPORTANT:

To maintain proper temperatures in the air curtain and to

prolong the life of the compressor, the condenser coils must

be cleaned on a regular basis . It is recommended that the

coils be checked and cleaned every month . This procedure

is not covered under warranty, however is to be performed

only by qualified engineering/maintenance personal .

Cleaning procedure:

• Turn unit off and unplug from electrical power source .

• To access the coils, remove the louvered panels located

at the bottom of the unit .

• Use a vacuum cleaner with a brush attachment to clean

the coils . In extreme cases of dust and grease buildup,

compressed air may be required for cleaning the coil

fins . Use caution when doing this . The air curtain must

be moved to an isolated location to perform this proce-

dure . Once the coils have been cleaned, inspect for bent

coil fins . Straighten bent fins using a straightening tool

called a comb .

• The compressor motor and other components can be

cleaned using stiff brush or whisk broom .

PROCEDURE FOR REVERSING THE AIR

CURTAIN DOOR SWING

1 . Remove door . (See Fig . 1)

NOTE: Remove only the 6 bolts (3 per hinge) that hold

the door to the cabinet . Do not remove the bolts that

attach the hinges to the door .

Figure 1

2 . Place door on a table or flat work surface .

3 . Remove the switch strike plate (Button activator block)

located at the top of the door . (See Fig . 2) Reorient it to

the opposite end of the door and install .

Figure 2

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