Norlake CPX150DC-A Installation Manual

REFRIGERATION SYSTEMS

INSTALLATION, OPERATION AND

MAINTENANCE INSTRUCTIONS

TABLE OF CONTENTS

INSTALLATION 2 - 7 Wall Mounted Systems 2 - 3

General Instructions 2 - 3 Freezer Models 100 and 150 or Cooler Model 075 3 Ceiling Mounted Systems 4 - 6 General Instructions 4 - 5 Outdoor Systems Utilizing a Membrane Roof 5 - 6 Remote Systems with Electric Vaporizer 6 Instructions for Pre-Charged Lines 7

OPERATION 8 - 10 Standard Temperature (Cooler) Systems 8

Low Temperature (Freezer) Systems 8 - 10 Defrost __________________________________________8 Drain Tube Heater _________________________________10 Extra Low Temperature (Freezer) Systems 10 Operation Refrigeration Control __________________________________10

MAINTENANCE General

Service and Analysis Guide 12

ELECTRICAL DATA

Electrical and Refrigerant information can be found on the

Serial Tag.

8 – 9

11 - 12 11

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INSTALLATION

WALL MOUNTED SYSTEMS General Installation Instructions

Note: If the system to be wall mounted is a freezer model 100 or 150 or cooler model 075, please see the

next section with special instructions on mounting these units. Carefully raise the entire refrigeration system and insert the projecting sleeve of the evaporator section into

the opening of the walk-in wall. While supporting the system, lock it into position by turning the locks exactly as you did when locking the walk-in sections together. Make sure that the locks are positively engaged and insert the plug buttons into the lock access holes when finished. Refer to Figure 1.

Note: Some motor compressors are openly spring mounted to absorb vibration. Be sure that these bolts are loosened to permit the compressor to float freely on the springs. A reminder label is applied to systems where this procedure applies.

Some systems require a permanent connection to an electrical service and a connection at the junction box located within the condensing unit housing. Refer to the serial tag for all pertinent electrical data. These systems must be connected to a power supply disconnect switch and wired according to local and national electric codes.

Wall Mounted Refrigeration System

Figure 1

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No plumbing drain is required, under normal conditions, for indoor installations. A built-in hot gas vaporizer dissipates the condensate moisture automatically. In outdoor installations, the condensate should be plumbed to the nearest drain. Check local building codes. Outside drain lines must also be wrapped with a suitable heater wire if they are ever subjected to below freezing temperatures. Outdoor installations also require the attachment of the rain hood that will divert rainfall from the upper surface of the evaporator housing. See Figure 1 for an illustration.

Be sure to allow for sufficient airflow around the condenser. A minimum clearance of two feet is required for proper unit operation. If multiple units are located in the same area, be sure they do not exhaust hot air flows into one another.

Please see the section “Instructions for Pre-Charged Lines” if the installation of this system involves the use of pre-charged lines to connect the evaporator and condenser secti ons.

Freezer Models 100 and 150 or Cooler Model 075

1. After uncrating, before attempting to attach the refrigeration system to the walk-in, a substantial temporary support should be built. The support should be approximately 28 inches high and placed directly below the wall opening of the walk-in.

Note: Due to the weight of these systems it is highly recommended that proper lifting equipment, such as

a fork truck, be utilized during installation.

2. Lift the refrigeration system onto the temporary support. Determine whether the coil section sleeve is positioned properly so that it can be inserted into the opening without being bent or damaged. Shim the system appropriately so that this can be accomplished.

3. Carefully slide the entire system so that the coil section sleeve enters the opening without disturbing the temporary support below the refrigeration system. Continue until the gasket around the coil section contacts and seals around the entire perimeter of the coil section. Shim the system and adjust it accordingly so that the gasket seal will be uniform on all four sides.

4. Using the section-latching wrench provided for the erection of the walk-in, insert the wrench into the latch access holes of the coil section. Turn each of the locks clockwise until the latches engage the strikes in the walk-in. Turn the lock until a full stop is encountered. DO NOT REMOVE THE TEMPORARY SUPPORT!

5. Remove the louver assembly and drill four 9/16” diameter holes through the two upright angles of the condensing unit section. Drill completely through the walk-in wall and insert the 1/2" threaded nylon rods. Secure with the flat washers and nuts provided. Refer to Figure 2.

6. With the leveling screws threaded completely into the leg support, insert the leg support into the leg retainers at the outer corners of the condensing unit section. Unscrew the leg leveling screws until they contact the floor or other supporting surface. Note: If the supporting surface is extremely uneven, suitable shimming material must be provided under one or both of the leg supports.

7. Attach the diagonal leg support braces using the threaded fasteners provided. Make the final adjustments to the leg leveling screws so that they serve as supporting devices to the outer edge of the refrigeration system.

8. Insert plug buttons into each of the latch access holes.

Figure 2

9. Remove the temporary support assembly that was provided in Step 1.

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CEILING MOUNTED SYSTEMS

General Installation Instructions

This section has the general instructions for installing the ceiling mounted Refrigeration System. Before proceeding, please also see the following sections on mounting “Outdoor Systems Utilizing a Membrane Roofing Material”, or “Remote Systems with Curb and Electric Vaporizer”, if applicable.

Note: Due to the weight of these systems, it is highly recommended that proper lifting equipment, such as a fork truck, be utilized during installation. Also, be sure to allow for sufficient airflow around the condenser. A minimum clearance of two feet is required for proper unit operation. If multiple units are located in the same area, be sure they do not exhaust hot air flows into one another.

1. Mount eyebolts to the base of the refrigeration system through the holes that were used to lag the base to the shipping crate. Note: The holes can be drilled out to a larger diameter, if required, for eyebolts that are available.

2. Insert chains or cables from an overhead lifting source through the eyebolts and carefully raise the entire refrigeration system to the top of the walk-in.

3. Position the unit cooler section of the refrigeration system over the hole in the walk-in ceiling section.

4. Align the tabs on the side of the unit cooler section with the predrilled holes in the ceiling section. Before proceeding to the next step, the cowl cover should be removed. Look inside the unit cooler section and be sure the air divider in the ceiling section lines up with the black gasket divider in the unit cooler. Simply bending the ceiling section divider slightly forward or backward may be required. This will prevent any short cycling of discharge and return air.

5. Fasten the unit cooler section down to the ceiling using the provided drive screws, which can be found in the small cloth bag. CAUTION! This must be done to prevent the entire refrigeration system from

moving during operation.

Note: On smaller refrigeration systems, you may elect to install the system on the ceiling section while the

section is still on the floor. CAUTION! Make sure to fasten down the system to the ceiling panel. The ceiling section and the refrigeration system may then be erected together in the normal sequence of assembly as shown in the walk-in installation instructions. This method is not practical and should not be used with larger systems of 1 horsepower or above, such as a model CPF100 or CPF150.

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