Alfresco URS-1XE Service and Parts Manual

Troubleshooting and Service Guide

This guide is intended to assist in diagnosing common problems with the Alfresco URS-1XE refrigerator. For component replacement, a trained and licensed refrigeration professional should be used. Repairs within the factory warranty period require prior authorization.

Unit Not Cooling:

• Power to the Unit: Verify the unit is receiving power and the voltage is within ± 10% of 115 VAC. Low voltage can cause the compressor to draw more amperage, potentially tripping its safety relay.
• Compressor Not Running: The compressor and condenser fan receive power simultaneously. However, there is a ten-minute time delay for the compressor to start, during which the fan will run. This is normal.
• Condenser Fan Not Running: If the compressor is running, the condenser fan should also be running. Check for power to the fan motor and ensure the fan blades rotate freely. Debris (leaves, paper, grass clippings, etc.) can obstruct the fan blades and prevent rotation.

Unit Not Holding Temperature Correctly:

• Evaporator Intake: Ensure that products are not blocking the evaporator coil intake slots. While designed to prevent blockage, soft packaging can obstruct airflow. Rearrange products to clear the slots.
• Digital Temperature Control: Verify the temperature control is set correctly according to the user manual. Incorrect settings can lead to improper refrigeration or excessive ice formation, blocking airflow.

Noisy Operation:

• Ambient Temperature: Higher ambient temperatures (90°F or above) will cause the unit to run more, making compressor and fan noise more noticeable.
• Required Run Time: As ambient temperature increases, the refrigerator requires more cooling, leading to increased compressor and fan noise.
• Residual Heat: Units located on concrete slabs or in sunny areas may experience higher intake air temperatures, making the condenser coil less efficient and increasing run time.
• Debris in Fan Blades: Debris can obstruct fan rotation or airflow, causing noise or cooling issues.
• Fully Stocked: An under-stocked unit may cycle more frequently. A fully stocked unit has extended run times but also extended off-times, allowing the compressor to cool properly between cycles for better efficiency.

Performance Envelope:

The URS-1XE can maintain internal temperatures between 22°F and 40°F at ambient temperatures up to 110°F. At ambient temperatures above 85-90°F, the unit may operate continuously. This is normal during peak temperature periods. Normal cyclic operation resumes when ambient temperature drops below 85-90°F. Note that reported ambient temperatures are measured in shaded, ventilated conditions; actual temperatures around the unit may be higher, especially in direct sunlight or on heated surfaces.

URS-1XE Service Parts List

The following lists components and hardware serviceable on the URS-1XE refrigerator unit.

Major Components:

• Evaporator Fan (210-0025)
• Evaporator Fan Harness (210-0479)
• Power Cord (210-0287)
• Compressor (260-0121) - Includes Compressor, PTC Relay, Overload Protector, Capacitor, Mounting hardware
• Main Power Switch (210-0021)
• Condenser Fan (210-0405)
• Condenser Fan Mounting Nut (200-0350)
• Terminal Block (210-0404)
• Fan Motor (210-0401)
• Refrigeration Controller (210-0425)
• Light Switch (210-0308)
• Filter Drier (220-0029)
• Capillary Tube for Evaporator (220-0358)
• Adjustable Foot (290-0351)
• Adjustable Foot (290-0175)
• Wheel (290-0129)
• Lamp holder (210-0321)
• Refrigerator Bulb (210-0327)
• Pry-out Plug (510-0226)
• Plug Cap (290-0082)
• Arrow Clip (200-0043) - Used to plug unused hinge mount holes
• Strain Relief (210-0422) - Used to secure power cord
• Hinge (body side) (130-1684)
• Hinge (door side) (130-1685)
• Bushing (130-1340)
• Cable Tie (push mount) (210-0258)
• Wire Rack (230-0030)
• Condenser Coil (250-0072)
• Evaporator Coil (250-0071)
• Shelf Clip (290-0140)
• Pilaster (290-0187)
• Keyhole Support (290-0141)
• Pop Rivet (200-0106)
• Door Assembly (510-0919)
• Magnetic Door Gasket (290-0184)
• Rear Wiring Harness (210-0435)
• Controller Wiring Harness (210-0436)

Wiring Diagram

The wiring diagram illustrates the electrical connections for the URS-1XE, including components such as the compressor, fans, switches, controller, and terminal block. It details power input (115 VAC), neutral, and ground connections, as well as the wiring for the door light, compressor relay, and evaporator fan motors. The diagram emphasizes that the unit case must be grounded. Key components shown include the ZEL GML175D compressor, PTC Relay, Overload Protector, Temp Sensor, Evaporator Fan Motors, Condenser Motor, Main Power Switch, Door Light Switch, and the Controller Unit HMC-2.

URS-1XE Service Data

Electrical Specifications:

• Voltage: 115 VAC
• Frequency: 60 Hz
• Phase: 1
• Amps: 2.57
• RLA (Rated Load Amps): 1.3
• LRA (Locked Rotor Amps): 7.1
• MCA (Minimum Circuit Ampacity): 2.9

Refrigeration Specifications:

• Refrigerant: 134A (9 oz)
• Suction Pressure @ 20°F: 18 PSI (Acceptable Range: 12-21 PSI, Coil Temp. 10°F-24°F)
• Liquid Pressure @ 100°F: 125 PSI (Acceptable Range: 125-147 PSI, Ambient Temp. 80°F-90°F)
• Liquid Pressure @ 120°F: 170 PSI (Acceptable Range: 170-197 PSI, Ambient Temp. 100°F-110°F)

Service Contact:

For service, please call 1 866 203 5607. When calling, provide the model number, serial number, and date of installation, along with a description of the problem. The model and serial number are located on a plate inside the unit, near the top of the left wall.