Global Refrigeration T30HSP - User Manual

Installation and Operation Instructions
Vertical Freezers & Refrigerators, with EVCO
Digital Control & R290 REFRIGERATION SYSTEM
Low Temperature Glass door Merchandisers
ULG30
ULG50
ULG80
T30LGP
T50LGP
T80LGP
Medium Temperature Glass door Merchandisers
T30MGP T50MGP T80MGP
T30MSP T50MSP T80MSP
Low Temperature Storage Cabinets
T30LSP T50LSP T80LSP
Ice Cream Hardening Cabinets
T30HSP T50HSQL T50HSQHP
T50HSP T50HSHP
IMPORTANT
THE REFERENCE INFORMATION FOR THE TABLE
BELOW SHOULD BE FILLED IN AT THE TIME OF
INITIAL START-UP
MODEL NO .
SERIAL NO.
INSTALLATION DATE
INVOICE DATE
START-UP DATE
SERVICE CO.
SERVICE CO PHONE
GLOBAL REFRIGERATION
563 Corbin Rd Honea Path SC 29654
888-650-9799

Summary

Installation and Location

Inspect for Damage

Inspect the unit for any damage that may have occurred during shipping.

Cabinet Placement and Clearances

Cabinet Installation (Top Mounted)

Cabinet Installation (Bottom Mounted)

Electrical Requirements

Cabinet Start-up Procedures

Pre-start Checks

Verify compressor shipping strap, oil traces, wiring, lines, and fan rotation before startup.

Voltage Verification

Check compressor voltage after startup to ensure it is within acceptable limits.

Thermostat Settings

Normal Operating Temperature Ranges

Cleaning the Condensate Pan (Heated)

Control Overview, Parameters and Theory of Operation

Theory of Operation

Explanation of digital control functions, sensors, and defrost cycle.

EVCO Digital Control Setting

Change Set Point

Instructions for adjusting the temperature set point.

User Service Diagnostics

Door Fail to Self Close

Cabinet Will Not Hold Temperature

Troubleshooting for units not holding temperature or running continuously.

Cabinet Too Cold

Cabinet Will Not Cool

Troubleshooting for units that are not cooling.

Unit Noisy

Overview

1. Function Description
2. Important Technical Specifications
3. Usage Features
4. Maintenance Features
5. Troubleshooting (User Service Diagnostics)
6. Important Cautions

This document provides installation and operation instructions for Global Refrigeration vertical freezers and refrigerators equipped with an EVCO Digital Control and R290 refrigeration system.

Function Description:

The devices are vertical freezers and refrigerators designed for commercial use, including low temperature glass door merchandisers, medium temperature glass door merchandisers, low temperature storage cabinets, and ice cream hardening cabinets. They utilize a sophisticated, microprocessor-based digital electronic control system to manage temperature and defrost functions for optimal performance. The control is preconfigured by Global Refrigeration for specific models, and it is recommended to maintain factory settings for parameters other than the set point temperature. The refrigeration system uses R290 refrigerant.

Important Technical Specifications:

• Control System: EVCO Digital Control (specifically EV3294 for uprights), microprocessor-based.
• Refrigeration System: R290 refrigerant.
• Temperature Sensors: Two sensors – a cavity sensor and a defrost sensor.
• Defrost Cycle: Time interval initiated / temperature terminated defrost cycle.
• Evaporator Fans: Configured for continuous operation, de-energize during defrost or when a door is opened.
• Compressor Operation: Energizes when cabinet temperature rises to set point plus differential, de-energizes when temperature falls to set point.
• Defrost Heater: Energizes upon defrost cycle initiation, de-energizes when defrost sensor reaches 35°F.
• Defrost Termination: Temperature-terminated (35°F at defrost sensor) or time-terminated (30 minutes if defrost sensor fails).
• Evaporator Fan Resume: Fans remain off for 10 minutes after defrost or until defrost sensor temperature declines to 20°F, whichever comes first.
• Normal Operating Temperature Ranges:
  • Refrigerators: 36°F to 42°F
  • Display Freezers: -20°F to 20°F
  • Storage Freezers: -20°F to 0°F
  • Hardening Freezers: -40°F to -30°F
• Clearance Requirements: Minimum 12 inches between the top of the cabinet and ceiling, and minimum 2 inches between the back of the cabinet and wall for proper air circulation.
• Electrical Requirements: Dedicated grounded supply circuit with proper voltage and amp draw as per the serial plate.
• NSF Compliance: Shelves and brackets must be removable without tools (hand-tightened screws). Floor sealing for bottom mount cabinets requires an NSF-approved sealant around the perimeter.

Usage Features:

• Installation:
  • Damage Inspection: Units are shipped in excellent condition; inspect for transit damage upon delivery and note any issues on the freight bill. Retain packaging for damaged units.
  • Location: Select a location away from heat sources (sun, heating vents). Avoid extension cords; a proper receptacle should be within 6 feet.
  • Cabinet Leveling: Crucial for proper door operation. Legs are adjustable for leveling.
  • Condensate Pan (Top Mounted Compressors): Mounts in a track on the underside, positioned under the drain tube. A protective cover over the electrical receptacle must be removed before installation. Secured by a thumb screw to prevent accidental unplugging.
  • Skid Removal (Bottom Mounted Compressors): Remove front clips to slide the cabinet forward and clear rear mounting clips.
• Door Adjustment (Glass Doors): Internal torsion rod allows adjustment of closing tension. Loosen nut "A" and turn the square shaft to increase or decrease torque. The door should swing smoothly, not slam, and self-close from a slightly open position.
• Door Removal (Solid Doors): Open door 180°, support the outer edge, remove screws from the upper hinge, lift and remove from the lower hinge pin. Upper hinge cam is under spring tension; keep hands clear.
• Thermostat Setting: Shipped with a mid-point setting. Final adjustment must be made in the field.
  • Viewing Set Point: Press and hold "SET" button for 4 seconds to unlock, then press and release "SET" to display "SP".
  • Changing Set Point: Use the Upper Arrow button to make it warmer or the Lower Arrow button to make it colder. Press and release "SET" to save.
  • Exiting Menu: The display will show current temperature after 60 seconds of inactivity.
• Energy Conservation:
  • Operate at the warmest safe temperature.
  • Locate away from direct sunlight and air ducts.
  • Keep doors closed and ensure they self-close properly.
  • Avoid overstocking to maintain proper airflow.
  • Maintain a cooler ambient environment (70-75°F / 23.9°C and 50-55% humidity) for maximum efficiency.

Maintenance Features:

• Cleaning the Interior: Wash with a solution of one tablespoon baking soda per quart of water. Rinse and wipe dry. Power should be off.
• Cleaning the Exterior: Wipe with a cloth dampened in mild detergent water, rinse, and wipe dry. Avoid abrasive or caustic cleaners.
• Cleaning the Condenser: Periodically brush the coil with a soft brush or use a vacuum cleaner with a brush attachment. Power must be disconnected. Ensure the condenser fan is off during cleaning to prevent debris from being drawn into the coil.
• Cleaning the Condensate Pan (Heated): De-energize the unit and allow 10 minutes for the heating element to cool before removing the pan. Remove the screw holding the cover, unplug the heater, and slide the pan forward. Clean deposits. Ensure proper placement under the evaporator drain tube when replacing.
• Routine Inspections:
  • Annual inspections by a qualified service company are recommended to check fan motor function and refrigerant charge.
  • Condenser coil should be inspected at least twice a year.

Troubleshooting (User Service Diagnostics):

• Door fails to self-close: Check closer spring adjustment, cabinet level, or broken door closer spring/gasket.
• Cabinet not holding temperature/running continuously: Check door gaskets, cabinet environment (too warm), dirty condenser coil, "frost bound" evaporator, low refrigeration system capacity, or intermittent compressor starting.
• Cabinet too cold: Incorrect thermostat setting or defective sensor.
• Cabinet not cooling (lights/fans/control function): Probable service level problem.
• Cabinet not cooling (all inoperative): Probable loss of power (check plug, circuit breaker, power switch).
• All lights inoperative: Light switch off or blown fuse.
• Some lights inoperative: LED fixture poorly seated or defective.
• Unit noisy: Compressor shipping strap, unlevel unit, or service level problems (refrigerant flood back, fan blade contact, etc.).

Important Cautions:

• Control replacement should only be done by trained service professionals. Non-standard program parameters may result in serious machine failures and void the warranty.
• Do not operate medium temperature cabinets (refrigerators) below 32°F.
• Do not start the compressor if oil traces are present on the compressor pan until inspected by a service technician.
• Drilling holes in the cabinet will destroy the insulated seal, damage electrical wiring, and void the warranty.
• Ensure proper voltage to the compressor; insufficient supply wiring can cause voltage drops.

Global Refrigeration T30HSP Specifications

General

Brand	Global Refrigeration
Model	T30HSP
Category	Merchandiser
Language	English