1. Compressor Fitting Information
This information will assist technical personnel to ensure correct fitting procedures are adopted
to maximise the life of the compressor and associated components.
All Unicla compressors are manufactured to exacting standards using quality materials and
rigorous test programs to ensure reliability and durability are optimised.
It is important to recognise poor fitting or servicing procedures as well as any mismatch of
compressors to systems as these factors can seriously jeopardise reliability and performance
and result in premature compressor failure or unacceptable performance losses.
The following guidelines must be strictly adhered to. The Unicla warranty against faulty
product (materials and workmanship) is subject to system compatibility and refrigerant and
lubricant compatibility.
a) Removing transit gas
Before mounting and when handling a new Unicla UWX compressor
for the first time, remove the dust cap from the discharge service
valve and gently release the N2 gas as follows.
Take care to not let oil escape.
b) Initial lubrication
Rotate the compressor armature manually for 4-5 revolutions to
ensure proper lubrication to the working assembly components.
This will avoid damage during initial start up.
c) Service manual
If any disassembly of compressor components is required, the specific Unicla compressor
service manual must be consulted and the relative procedures strictly adhered to. UWX series
compressors require fitting of the discharge line hose manifold to the appropriate left or right
hand side of the compressor. A separate installation instruction booklet is attached to the
compressor for this.
2. System Cleanliness
a) Contamination
The system must be free of both solid particle and chemical contamination before compressor
fitting. Solid particle contamination will cause direct compressor damage and starvation due
to blocked system filters and screens (see section 10). Chemical contamination can reduce
solubility/miscibility of refrigerants and oils, reduce oil viscosity, and cause acid etching and
sludge formation.
b) Flushing
Contaminated systems must be flushed before fitting the new compressor. Individual
component flushing is strongly recommended in systems where solid particle contamination
has occurred during the system assembly process. The compressor, TX valve, pressure control
valves, receiver driers/accumulators and mufflers/pulsation dampers -
must not be flushed.
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