13.
System oil quantity
Oil type and grade
Storage guidelines
I.
Evacuate compressor for 3 minutes and fill with nitrogen (N
2
) at 0.1 ~ 0.2 MPa.
II. Place the compressor in a clean and dry area with low humidity and tag with details.
III. Keep compressor away from direct sunlight.
IV. Store the compressor horizontally on a flat, even surface.
V. Do not store the compressor in temperatures above 30˚C.
VI. Place the compressor in a well ventilated area to avoid corrosion damage.
*The contents of this manual are subject to change without prior notice.
The correct amount of oil must be maintained in the compressor and system. Long hose runs
and dual evaporator systems must have additional oil added to the system. Severe oil starvation
problems may result from insufficient system oil being allowed. To determine oil quantity
required, Unicla recommends a calculation as a percentage of refrigerant charge as follows:
•
20% for Unicla UX330 compressors
in standard applications where the suction and
discharge lines are less than 6 metres in length.
•
30% for Unicla UX330 compressors
in applications where suction and discharge lines
exceed 6m in length.
Example:
Calculate oil charge as 20% of refrigerant charge, 5 kg charge = 5000 g x 20% = 1000 ml
(cc)
of
oil. If fitting a UX330 compressor, then deduct the compressor initial oil charge to determine
amount of oil to be added. Therefore 1000 – 600 = 400cc oil to be added to system.
Each Unicla UX330 is fitted with either PAG oil
(Unidap 7)
or POE oil
(Unidap 6)
. When adding oil
to the system, Unicla oil must be used.
Warranty is void if these guidelines are not followed.
The following labels will determine the type of oil in each UX330 compressor:
POE type
PAG type
Compressor
Model
Refrigerant
Oil Type
(Unicla)
Viscosity @
40˚C
Viscosity @
100˚C
Application
Low side
Saturation
Oil Separator
UX330
R134a
Unidap 7
48.01
10.51
Airconditioning
> 0˚C
Optional
UX330
R134a
Unidap 6
65.5
9.3
Airconditioning
>0˚C
Optional
