LU-VE F31HC Series User Manual

ENGLISH
Installation, Operation, Service
and
Maintenance Instructions
“UNIT COOLERS FOR COLD ROOMS”
Model Series
F31HC / F35HC
UNIT FOR USE WITH WALK-IN COOLER,
FREEZER OR REFRIGERATED WAREHOUSE

LU-VE F31HC Series Specifications

General

Series	F31HC
Category	Accessories
Construction Material	Galvanized Steel
Fin Material	Aluminum
Tube Material	Copper
Model Series	F31HC
Application	Refrigeration

Summary

Warning Symbols and Meanings

Mandatory Safety Signs

Details mandatory safety signs that require specific protective actions from personnel.

General Safety Information and Precautions

Recommended Unit Cooler Placement

Typical Cold Room Placement

Refrigerant Piping Installation

General Unit Piping Guidelines

Provides best practices for pipe sizing, pitching, insulation, and support for system efficiency.

Leak Testing Procedures

Evacuation and Charging

Evaporator Superheat Adjustment

Field Wiring Electrical Requirements

Field Wiring Diagrams - Air Defrost

Field Wiring Diagrams - Electric Defrost (Timer Only)

Field Wiring Diagrams - Electric Defrost (w/ Heater Contactor)

Field Wiring Diagrams - Multiple Electric Defrost (Timer Only)

Field Wiring Diagrams - Multiple Electric Defrost (w/ Heater Contactor)

Field Wiring Diagrams - 3-Phase Electric Defrost (w/ Heater Contactor)

Field Wiring Diagrams - Multiple 3-Phase Electric Defrost (w/ Heater Contactor)

Field Wiring Diagrams - Multiple 3-Phase Electric Defrost (w/ 2 Heater Contactors)

Initial Start Up Procedures

EC Motor and Fan Assembly Service

Troubleshooting EC Motor Issues

Lists possible causes and corrective actions for issues related to fan motor operation and noise.

Troubleshooting Coil Corrosion

Addresses coil deterioration, leaks, and identifying corrosive agents in the environment.

Defrost Cycle and Heater Service

Troubleshooting Defrost Problems

Provides solutions for coil icing, incomplete defrost, and heater malfunctions.

Motor and Fan Assembly Removal

F35HC Motor/Fan Assembly Removal

F31HC Motor/Fan Assembly Removal

Coil and Drain Pan Heater Replacement

Heater Replacement Procedure

Detailed instructions for safely replacing defective electric heaters in the coil and drain pan.