Leer Storage Freezer Installation, Operation, and Service Manual

Start-Up

Storage and Transportation

The freezer should be stored and transported in an upright position. Tilting the freezer beyond 45 degrees of vertical is not recommended, as it may cause oil to drain from the compressor, leading to premature failure.

Do Not stack merchandisers on top of one another due to the risk of falling, which could result in damaged units or serious injuries. Warehouse racking design is recommended to accommodate the weight of merchandisers and prevent falling.

Packaging

Before installation, remove the outer packaging. Most packaging materials can be recycled. The wooden skid is secured with hex-headed screws, requiring a 3/8" hex-socket for removal.

Installation

Freezer Placement

Allow a minimum of 3 inches of air space from all cabinet surfaces and surrounding structures. This space facilitates airflow over the cabinet surface, reducing condensation and aiding in drying. For outdoor auto-defrost models, this rear space also ensures the evaporator drain tube is not restricted during the defrost cycle.

Freezer Leveling

The installation location must have a solid, level base. If the freezer leans forward slightly, block the front of the cabinet to level it. A forward lean on auto-defrost models may affect proper draining of the unit cooler assembly during the defrost cycle.

A leveling kit (Part No. 5350029) is available for most cabinet models. Contact the Merchandiser Sales Department at Leer, Inc. for details.

Electrical

Warning: Component parts should only be replaced with identical components. Electrical and servicing should be performed by licensed professionals. Always disconnect power before servicing. Some models have multiple voltages. Leer is not responsible for damage resulting from improper use or non-compliance with instructions.

The freezer requires a dedicated, properly grounded 115V/60Hz/1Ph circuit with a 15 or 20 Amp fuse or breaker, depending on the model. Electrical connections must comply with national and local codes. DO NOT use extension cords. Do not remove the 20 Amp plug configuration if present. If the unit has a main power switch, ensure it is OFF before plugging in. Plug the power cord into the lower receptacle of the electrical outlet and turn the switch ON. The compressor and condenser fans should start after a few seconds delay. The light fixture activates immediately. Evaporator fans operate when the evaporator coil temperature is below 75°F. The condensing unit runs until the cabinet air temperature reaches -12°F.

WARNING: Operating multiple appliances on the same circuit can cause voltage fluctuations, potentially tripping the breaker or causing voltage drops. This can interrupt power to the freezer and adversely affect freezing performance, leading to equipment damage or product loss. Voltage supply must not vary more than ±10% of the normal 115V.

Electrical voltage and frequency information is available on the merchandiser's serial data plate, usually located in the upper left interior. Maximum fuse/circuit breaker size requirements are on the condensing unit data plate.

Operation

Condensate Evaporator

Indoor auto-defrost models include a condensate evaporator heater assembly, shipped inside the freezer with separate instructions. This assembly requires simple consumer installation (see Figure 1). It features a drip pan to collect defrost water and a heat element to evaporate it. The heat element operates continuously. The freezer must be placed with at least 1 inch of air space behind the condensate evaporator housing for heat dissipation. Route the power cord to avoid pinching.

Note: Do not operate an indoor auto-defrost merchandiser without the condensate evaporator assembly installed under the evaporator drain tube. Failure to do so will cause water to drain onto the floor during defrost, potentially causing water damage and a slip hazard.

Figure 1: Condensate Evaporator Installation Diagram Description: This diagram shows the placement of the condensate evaporator assembly. It includes labels for the evaporator assembly, drain line, 7-foot power cord, hex head screws, and keyhole slots. An ice cube graphic is also present.

Electronic Controls: Digital Display

The digital display shows cabinet temperature and status icons. Key elements include:

Manual Defrost Button: Press and hold for over 2 seconds to initiate a manual defrost cycle (only if unit is at standard operating temperatures).
Defrost Enabled Indicator: Shows when defrost is active.
Compressor Enabled Icon: Indicates the compressor is running.
Temperature & Settings Buttons: Used to view and adjust settings.

Operating Mode Display

Snowflake “ON”: Compressor is enabled in run cycle; displays current cabinet temperature.
Snowflake “Flashing”: Anti short-cycle delay is active to protect the compressor.
Melting Snowflake “ON”: Defrost is in progress; displays “DE”.
To view the programmed “Set Point” (cut-out temperature), press and release the "Set Key."

Electronic Control Operation

The electronic control integrates thermostat and defrost timer functions. It allows monitoring of operational status via icons and the digital display. Controls are programmed by Leer for optimal performance within design parameters. The default set-point is -12°F with a 6°F differential. Set-point adjustments should not exceed ±4°F from the original factory setting. Do not alter programming without consulting Leer.

Auto-Defrost Control

The AD control, located under the condensing unit cover, uses two thermal-couple probe wires. Probe "P1" (Red) senses air temperature, displaying the cabinet temperature. Probe "P2" (Black) senses evaporator coil temperature during defrost. The factory default defrost cycle is 24 minutes every 4 hours. The electronic control switches power between run mode and defrost mode. Defrost duration is temperature-controlled by Probe "P2"; if it reaches 60°F before 24 minutes, defrost terminates early. If 60°F is not reached, the full 24-minute cycle completes. The "melting snowflake" icon and "DE" on the display indicate defrost is active.

A defrost termination safety switch, attached to an evaporator coil tube, cuts power to the defrost heat element if its surface reaches 100°F. This switch resets at 70°F. Warning: This switch is a fire protection device; do not remove or bypass it.

Note: If an electronic control AD unit loses power, it will automatically enter a defrost cycle.

Note: Some models have a drain line heater to prevent ice formation in the drain tube.

Possible Displayed Alarm Codes

"P1" - Air Probe failure: Control overrides "P1" functions and cycles the compressor for 17 minutes until the fault is corrected.
"P2" - Evaporator Probe failure: Control overrides "P2" function and uses a timed defrost cycle until the fault is corrected.
"HA" - Maximum Temperature Alarm: Cabinet air temperature exceeded programmed temperature for over 15 minutes. Alarm clears when temperature drops below maximum levels.
"LA" - Minimum Temperature Alarm: Cabinet air temperature dropped below programmed minimum. Alarm clears when temperature rises above minimum levels.

Note: For "P1" or "P2" alarms, check probe wire connections before replacing probes.

For detailed electronic control programming and instructions, contact Leer, Inc. Merchandiser Division Customer Service at 800-766-5337 or visit www.leerinc.com/ice-merchandisers/merchandiser-sales-distributors/.

Loading Product

Pre-chill the freezer before loading product to help it reach storage temperature faster and reduce the risk of melting. Do not overfill; leave space for airflow. Avoid blocking the evaporator fans in the unit cooler assembly, as they are crucial for circulating air and removing heat. If the unit has air ducts, do not stack product above their top edge to ensure even cold air distribution and prevent warm spots.

Condenser Fan Pressure Switch

Some freezer units use a pressure switch to operate the condensing unit fan for proper system operation.

Maintenance

Note: Replace component parts only with identical components. Electrical and refrigeration system maintenance and repair should only be performed by trained and qualified personnel. Disconnect power before servicing. Leer assumes no responsibility for damage due to improper use or non-compliance with instructions.

CAUTION: RISK OF ELECTRIC SHOCK. DISCONNECT POWER BEFORE SERVICING OR CLEANING UNIT.

CAUTION: MOVING FAN BLADE. DO NOT OPERATE UNIT WITH COVER REMOVED.

Cleaning the Freezer

Clean the freezer annually. In corrosive environments (coastal regions, areas with deicing chemicals/road salts), clean more frequently. The exterior can be cleaned with mild detergent diluted in warm water, followed by a rinse. The exterior paint withstands polishing compounds and most solvents. Test stronger cleaning agents on inconspicuous areas first. For interior cleaning, avoid detergents with strong odors (e.g., citrus-based), abrasive cleaners, chlorine bleach, or solvent-based cleaners, as they can leave odors that may be absorbed by stored ice.

Cleaning Door Gaskets

Door gaskets may develop mildew or stiffen over time. Clean them with kitchen or bath cleaners designed for mildew removal. Always review the cleaner's manufacturer information for compatibility with the gasket material.

Cleaning Condenser Coils

Inspect and clean the condenser coil and fan blades every 3 months. Debris drawn in by the fan should be removed from the opposite direction. The simplest method is vacuuming debris from the outside surface. Compressed air can also be used to blow dust out from the inside surface. Warning: Using compressed air may release dust clouds. Service personnel should wear protective equipment (safety glasses, dust mask) during coil cleaning.

Note: Do not place filter media in front of the condenser coil, as it restricts airflow and reduces heat exchange efficiency.

Defrosting the Freezer

Auto-defrost models automatically enter defrost mode every four hours. During defrost, power is redirected to a heat element on the evaporator coil, melting ice. Melt water drains through a tube. For indoor models, the condensate evaporator heater assembly must be installed to evaporate this water. Routinely check the condensate evaporator's heat element function; failure can lead to overflow. A touch test of the housing surface should confirm it is hot during operation. The element generates 125 watts, approximately 106 ohms resistance.

Check evaporator coil operation and for ice buildup every 3 months.

Auto-Defrost Electronic Control

The AD control manages defrost cycles. The factory setting is a 24-minute defrost every 4 hours. The electronic control switches power to the defrost heat element. Defrost termination is temperature-dependent via Probe "P2". If Probe "P2" reaches 60°F, defrost ends early. Otherwise, it runs for the full 24 minutes. The "melting snowflake" and "DE" on the display indicate defrost is active. The defrost termination safety switch cuts power to the heat element at 100°F and resets at 70°F.

Solid Door Models and Maintenance

Outdoor models feature metal-clad, insulated doors. Clean the exterior with mild detergent and warm water. Inspect door gasket seals regularly and replace if damaged.

Hinge Spring Tension

To test hinge spring tension, open the door slightly (enough to insert two fingers between the cabinet and door handle side). When fingers are withdrawn, the door should slowly move to a closed position. If it doesn't move, the spring-load may need re-tensioning or lubrication. If it moves partially but stops short, check gasket compression along the hinge side. Excessive compression can cause binding. Removing hinge covers allows access for tension adjustment or removal of spring-loads. See Figure 2 for spring-load installation and adjustment.

Spring Cartridge Installation Instructions Description:

Figure 1: Shows the 220 Hinge Assembly with Stationary Bushing, Spring, and Adjustment Collar Assembly.

Figure 2: Illustrates the assembly process: Place Thrust Washer and Stationary Bushing over the square pin, insert Adjustment Pin into Adjustment Collar. Compress the Spring using the Adjustment Pin and place the Adjustment Collar over the round pin.

Figure 3: Depicts turning the Adjustment Pin to contact the Hinge and inserting the Stop Pin into the Adjustment Collar. The winding direction is also indicated.

Steps:

Install No. 220 Hinge with Adjustment Plate.
Assemble Spring Cartridge. Grease bushing end of pin before inserting into Stationary Bushing. Apply a small amount of grease to the hinge-pin hole on the end of the Adjustment Collar Assembly (Fig. 1).
Place Thrust Washer and Stationary Bushing over the square pin in the Hinge and insert the Adjustment Pin into the Adjustment Collar. Using the Adjustment Pin, compress the Spring and place the Adjustment Collar over the round pin (Fig. 2).
Turn the Adjustment Collar using the Adjustment Pin until the Pin contacts the Hinge. Insert the Stop Pin into the Adjustment Collar (Fig. 3). CAUTION: The Stop Pin must fully seat on the Adjustment Collar to prevent dislodgement. Inserting the Adjustment Pin more than halfway can cause partial push-out of the Stop Pin. Repeat adjustment until desired tension is reached (max 6 holes or approx. 1-1/4 turns).
Install Cover on Hinge.

WARNING: Use safety glasses when installing and adjusting spring tension.

Solid Door Magnetic Gasket Replacement Instructions:

Steps:

Position solid door on a flat, non-abrasive surface, exterior side down.
Remove old gasket by pulling firmly from the corner away from the door frame extrusion.
Inspect the extruded slot for particles that might interfere with new gasket installation.
Align new gasket with door corners and press into frame using your thumb.
Start at one corner and press the new gasket into the slot. A non-abrasive tool like a hammer head can be used. Apply downward pressure along the frame perimeter. Excessive pressure may stretch the gasket and cause bulging at the corners.

Gasket Detail View and Step 4 diagrams are referenced.

Figure 3: Door Gasket Install Description: This diagram illustrates Step 5 of the gasket installation, showing the door being closed after the gasket is in place.

Electronic Control- AD Wiring Diagram W/Relay

The wiring diagram illustrates the electrical connections for the electronic control (AD) unit with a relay. It details connections for the door switch (if required), power input, defrost safety switch, defrost heater, evaporator fans, compressor, and various wiring colors (yellow, purple, white, brown, black, red). Key components shown include the control unit, compressor, LED, and pressure switch (if required). The diagram shows how power flows through switches and relays to control the refrigeration system and defrost functions.

Notes

This section contains blank lines for user notes.

Warranty

REFRIGERATED REACH-IN STORAGE FREEZERS

Leer warrants component parts for one (1) year and repair labor for ninety (90) days from the original shipment date, under normal use and service. The compressor motor is warranted for five (5) years from the original shipment date. For warranty claims, the seller must be contacted, and a freezer serial number provided. This warranty applies only to goods installed in the United States, Canada, or Mexico. Seller's obligation is limited to repair or replacement of defective parts, F.O.B. Seller's factory. Seller reserves the right to inspect defective parts and may require their return for inspection. Determination of defects is at Seller's sole judgment.

GENERAL PROVISIONS APPLICABLE TO ALL WARRANTIES AND PRODUCTS

Seller is not liable for breach of express warranty unless informed immediately upon discovery of defects. Warranties are non-assignable and are for the original buyer/user only. For express warranty claims, Seller covers labor charges for repair/replacement of defective parts reported within ninety (90) days of installation. All labor charges require prior authorization or approval from Seller. Labor charges cover standard straight time hours at the installation site and exclude travel, mileage, or premium charges. Warranties do not apply to goods damaged in transit, accident, negligence, abuse, misuse, unauthorized alteration/repair, acts of nature, or failure to follow Seller's manuals/instructions if these events detrimentally affected the product's condition or operation.

SELLER MAKES NO WARRANTY, EXPRESS OR IMPLIED, INCLUDING IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. ALL IMPLIED WARRANTIES ARE DISCLAIMED. SELLER IS NOT LIABLE FOR LOSS OF GOODS, MERCHANDISE, PROPERTY, OR PROFITS RESULTING FROM PRODUCT DEFECTS. SELLER'S LIABILITY FOR ANY BREACH OR CLAIM SHALL NOT EXCEED THE CONTRACT PRICE OF THE GOODS.

Model and Serial Number

MODEL NO.: ______________________

SERIAL NO.: ______________________