Traulsen G-Series owner manual III. Installation, IV. Operation

III. INSTALLATION (continued) IV. OPERATION

III.e - CORD & PLUG:

Most self-contained models are supplied with a cord

&plug attached. It is shipped coiled at the top of the cabinet, secured by a nylon strip. For your safety and protection, all units supplied with a cord and plug in- clude a special three-prong grounding plug on the service cord. Select only a dedicated electrical outlet with grounding plug for power source. NOTE: Do not under any circumstances, cut or remove the round grounding prong from the plug, or use an extension cord.

III.f - POWER SUPPLY:

The supply voltage should be checked prior to con- nection to be certain that proper voltage for the cabi- net wiring is available (refer to the serial tag to deter- mine correct unit voltage). Make connections in ac- cordance with local electrical codes. Use qualified electricians.

Use of a separate, dedicated circuit is required. Size wiring to handle indicated load and provide necessary overcurrent protector in circuit (see amperage require- ments on the unit’s serial tag).

III.g - WIRING DIAGRAM:

Refer to the wiring diagram for any service work per- formed on the unit. Should you require one, please contact Traulsen Service at (800) 825-8220, and pro- vide the model and serial number of the unit involved.

III.h - CLEARANCE:

In order to assure optimum performance, the condens- ing unit of your Traulsen unit MUST have an adequate supply of air for cooling purposes. Therefore, the operating location must either have a minimum of 12” clearance overhead of the condensing unit or allow for unrestricted air flow at the back of the unit. Clear- ance of at least 12” above is required in order to per- form certain maintenance tasks.

IV. OPERATION

IV. a - CONVERTIBLE CABINET - INTENDED USE:

A convertible cabinet is a reach-in freezer which, with the use of a key switch, can change itself to operate at refrigerated temperatures. This two temperature abil- ity allows the operator to maximize either their refrig- erated or frozen storage space as needed, providing them with additional flexibility in order to manage changing menus and product types.

IV. b - FREEZER NORMAL OPERATION:

During normal operation, a freezer continuously circulates below freezing cabinet air through the coil. The coil requires a periodic defrosting for proper operation. This is accom- plished by an automatic, time activated, temperature/time terminated, defrost program. The controller is preset at the

IV. b - FREEZER NORMAL OPERATION (continued): factory for six equally spaced defrost cycles within each 24- hour period.

At the start of a freezer defrost cycle, both the compressor and evaporator fans are OFF. The microprocessor control will read “dEF” (see figure 3). The electric heater (attached to the coil) is energized. When a temperature device affixed to the coil senses 70°F (models with electric defrost), the coil is fully defrosted and the compressor operation is re- sumed, defrost heaters are automatically turned off. The coil fans are delayed from starting at the termination of a defrost cycle. Fan operation is automatically resumed, or they can also be started by a time or temp delay (whichever comes first). In case of temp delay, it uses the same coil sensor and starts at 32°F. The total refrigeration system op- eration is then resumed.

°F°C

SET

FREEZER

Fig. 3

During freezer defrost operation, heat is confined to the coil enclosure to prevent any significant rise in temperature within the food zone. The fan delay controls function upon termination of a defrost cycle is two-fold. First, to prevent blowing warm air into the food storage area. Second, to prevent any condensation on the defrost coil from being blown into the food storage area.

The Microprocessor control is set from the factory to termi- nate defrost at 20 minutes in the event of a sensor failure. This setting should never be tampered with, without first consulting the factory.

IV. c - USING THE CONVERTIBLE FREEZER:

The default setting as delivered from the factory is for operation in normal freezer mode (0 to -5°F). How- ever, operation can be changed to refrigerated tem- peratures (36-38°F) by inserting the key into the face mounted “CONVERSION KEY SWITCH ” and turning this 90 degrees clockwise. Turn the key back 90 de- grees counter-clockwise (to the 12 O’Clock position) to resume normal freezer operation.

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