U-Line U-1075WC, SP 18, ULN-98 Introduction, POTENTIAL PROBLEMS WITH HFC-134A, General Information

Section 1 - General Information

INTRODUCTION

Three generations of pride and quality manufacturing and design improvements are built into all U-Line products. The result: U-Line leads the market with innovative technology and superior craftsmanship.

This manual contains specific instructions for servicing the U- Line Products which include these models:

MODELS

SP18

ULN-95 Icemaker

ULN-98 Icemaker

SS-1095 Icemaker

U-CO29F

U-CO29A

ULN-29R

U-1075BEV

U-1075WC

U-CO1175

BI-2115

ADA15IM

POTENTIAL PROBLEMS WITH HFC-134A

This service manual has been written to cover products manufactured with HFC-134A. HFC-134A compressors receive a synthetic based ester oil charge. The hygroscopic (water attraction) property of ester oil is many times greater than the mineral oils previously used with CFC-12. High system moisture causes the formation of acids and alcohol which can damage the compressor. Systems should not be left open for more than fifteen (15) minutes at any time as humidity from the air will enter the system. To ensure system dehydration, the system should be pulled down to 100 microns and vacuum pump oil (mineral oil) must not be allowed to enter the system.

Cleanliness of the system is extremely important. The presence of residues (chlorinated or greasy residues, mineral oil, or impurities) can lead to capillary tube restrictions, oil return problems and compressor damage. Do not use flux on brazed joints.

IMPORTANT

Check for the latest service related information at U- LineService.com. The Technical Knowledge base is continuously updated and can be accessed anytime. Each U- Line product has a unique method of installation, but it is consistent with U-Line’s methods and requirement. Follow the installation guidelines for the U-Line product you are installing.

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