The Ice-O-Matic UCG Gourmet Series Undercounter ice makers are designed to produce crystal clear ice cubes and are suitable for indoor installation only. This manual provides comprehensive information for the installation, startup, operation, cleaning, and maintenance of these units, emphasizing the importance of following outlined procedures to maintain safety and performance.
Function Description:
The Ice-O-Matic UCG Gourmet Series Undercounter ice makers utilize an electric water pump to circulate water from a sump assembly to a spray system. This water is then sprayed into inverted mold cups of an evaporator, where a portion freezes into ice. The remaining water cascades back into the sump for recirculation. During the freezing cycle, refrigerant flows through the evaporator serpentine, cooling the water to form ice. Once the ice cubes are formed, a defrost or harvest cycle is initiated, where hot gas from the compressor flows directly into the evaporator serpentine, warming the copper molds and releasing the ice cubes. These cubes then drop by gravity into a slanted cube deflector and into the storage bin.
Important Technical Specifications:
The UCG Gourmet Series includes models UCG 45, UCG 65, UCG 85, UCG 105, UCG 135, and UCG 165.
- Electrical Requirements: All models operate on 230/50/1 (volts/Hz/phase) with a 10 Amp fuse size.
- Refrigerant: All UCG Undercounter Series models use R134A refrigerant.
- UCG 45 A/W: 2.2 Amps (Unit RLA), 250 gr - 8.82 oz R134A.
- UCG 65 A/W: 2.4 Amps (Unit RLA), 260 gr - 9.17 oz (A), 250 gr - 8.82 oz (W) R134A.
- UCG 85 A/W: 3.2 Amps (Unit RLA), 290 gr - 10.2 oz (A), 250 gr - 8.82 oz (W) R134A.
- UCG 105 A/W: 3.5 Amps (Unit RLA), 320 gr - 11.3 oz (A), 250 gr - 8.82 oz (W) R134A.
- UCG 135 A/W: 3.8 Amps (Unit RLA), 330 gr - 11.6 oz (A), 300 gr - 10.6 oz (W) R134A.
- UCG 135 A/W (additional entry): 5.3 Amps (Unit RLA), 320 gr - 11.3 oz (A), 330 gr - 11.6 oz (W) R134A.
- Operating Temperatures:
- Minimum room temperature: 50°F (10°C).
- Maximum room temperature: 100°F (40°C).
- Minimum water inlet temperature: 40°F (5°C).
- Maximum water inlet temperature: 90°F (35°C).
- Water supply pressure: At least 14 psi (1 bar).
- Clearance: A minimum clearance of 6" (15cm) must be left at the sides of the unit for proper air circulation and service access.
- Voltage Variation: Maximum allowable voltage variation should not exceed -10% and +10% of the data plate rating.
Usage Features:
- Indoor Installation: The ice maker is designed exclusively for indoor use. Operation outside specified temperature ranges will void the warranty.
- Leveling: The unit must be leveled in both left-to-right and front-to-rear directions for proper operation.
- Water Supply: Connects to a cold-water supply line with a shut-off valve. For water-cooled models (UCG165), two separate inlet water supplies are required: one for ice production and one for the condenser.
- Water Drain: The recommended drain tube is a plastic or flexible tube with an 18 mm (3/4") I.D. running to an open, trapped, and vented drain. A vertical open vent at the unit drain connection is required for proper sump drainage.
- Cube Size Control (Evaporator Thermostat): Located behind the front panel, this control determines the length of the freezing cycle and thus the size of the ice cubes. A lower setting produces larger cubes, while a higher setting produces smaller cubes. The factory setting (knob in the black dot position) is optimized for ambient temperatures between 20°C and 30°C (70°F and 90°F). Adjustments may be needed if the room temperature is below 20°C (cubes may be partly hollowed) or above 30°C (cubes may have a jagged rim of ice).
- Bin Thermostat: Located in the control box, this thermostat senses the ice level in the storage bin. It automatically shuts off the icemaker when in contact with ice and restarts it when ice is removed. Factory settings are 1°C (35°F) OUT and 4°C (39°F) IN.
- Cleaning Switch (UCG45/65/85/105): Located on the bottom left side of the control box, this switch energizes the water inlet and hot gas valves to fill the sump tank for cleaning.
- Electronic Timer (UCG135-165): Equipped with a two-key dip switch and a potentiometer, this timer manages the length of the second phase of the freezing cycle and the entire defrost/harvest cycle with factory pre-set times. Key 1 controls compressor operation (ON for standard, OFF for cleaning mode). Key 2 sets the timed portion (Ta) of the freezing cycle (12' for ON, 8' for OFF). The potentiometer adjusts defrost time from 60" to 180".
- Master Switch (UCG45/65/85/105): Used to start and stop the ice maker.
- Compressor Switch (UCG135/165): Used to de-energize the compressor during cleaning.
- Fan Pressure Control (UCG135-135): On air-cooled models, this maintains head pressure within preset values.
- Water Regulating Valve (UCG165 Water cooled version only): Controls head pressure in the refrigerant system by regulating cooling water flow to the condenser.
Maintenance Features:
- Periodic Cleaning: Ice-O-Matic recommends cleaning the ice machine every 6 months, or more frequently (up to once a month) to prevent damage. Before cleaning, ensure the power is disconnected and the water supply is turned off.
- Inspection: Upon unpacking, inspect for any damage to the exterior packaging, skid, and internal components. Check refrigerant lines, fan blade movement, and compressor mounting.
- Internal Support Removal: Remove all internal support packaging and masking tape before operation.
- Wiping Surfaces: Use a clean, damp cloth to wipe surfaces inside the storage bin and outside the cabinet.
- Voltage Verification: Verify that the local main voltage corresponds with the voltage specified on the unit's data plate. Incorrect voltage will void the parts replacement program.
- Warranty Registration: Register the unit at www.iceomatic.com/warranty for warranty coverage. The warranty covers defects in material or workmanship but excludes maintenance, installation corrections, or operation outside specified limitations.
- Troubleshooting Guide: A service diagnosis section is provided to assist with common issues such as the unit not running, intermittent compressor cycles, small or cloudy cubes, decreased ice capacity, poor harvest, incorrect discharge pressure, and excessive water in the unit base, along with suggested corrections.
Need help?
General
To Next Page
