Section 1 - General Information; Introduction; Potential Problems With Hfc-134A - U-Line 2115R Service Manual

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:
ÉCHELON MODELS
2115R
2115WC
2115WCOL
2275DWRR
2175R
2175RF
2175WC
2175WCOL
CLR2160
CLRCO2175
CO2275DWR
CO2175F
2175BEV
2275DWRWS
2275DWRWS
2275ZWC
2275ZWCOL
ORIGINS MODELS
1115R
1115WC
1175BEV
1175R
1175WC
ADA24R

Section 1 - General Information

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 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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