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15 - MajOR SYSTEM COMpONENTS
15.1 - Compressors
30RQS/RQSY units use hermetic scroll compressors. Each
compressor is equipped with a crankcase oil heater, as
standard.
Each compressor sub-function is equipped with:
•
Anti-vibration mountings between the unit chassis
and the chassis of the compressor sub-function.
•
A single pressure safety switch at the discharge.
15.2 - lubricant
The compressors installed in these units have a specific oil
charge, indicated on the name plate of each compressor.
The oil level check must be done with the unit switched off,
when then suction and discharge pressures are equalised. The
oil level must be visible and above the middle of the sight-
glass in the oil equalisation line. If this is not the case, there
is an oil leak in the circuit. Search and repair the leak, then
recharge oil, so that it reaches a level between the middle
and three quarters of the sight-glass (unit in vacuum).
ATTENTION: Too much oil in the circuit can cause a
unit defect. r-22 oils are absolutely not compatible with
r-410A oils and vice versa.
NOTE: use only oils which have been approved for the
compressors. Never use oils which have been exposed to air.
15.3 - air evaporator/condenser
The 30RQS/RQSY coils are heat exchangers with internally
grooved copper tubes with aluminium fins. To prevent ice
formation at the bottom of the coils, electric heaters are
installed under the sheet metal base. They are switched on,
based on the outside temperature.
The table below gives the necessary additional information for eco-design requirements (European directive 2009/125/EC).
product/option
Global fan efficiency
Measurement category
Efficiency category
Energy efficiency target N(2013)
Efficiency level at the optimal energy efficiency point
Year of manufacture
Fan manufacturer
Motor manufacturer
Fan reference
Motor reference
Nominal motor capacity
Flow rate
Pressure
Speed
Specific ratio
Product disassembly, recycling or disposal at end of life
Information about minimising environmental impact
*
Only for sizes 039-050 and 080-120
**
Only for sizes 060-078 and 140-160
15.4 - fans
The fans are axial Flying Bird fans equipped with rotating
shroud and made of composite recyclable material. The
motors are three-phase, with permanently lubricated
bearings and insulation class F. See table below.
15.5 - Electronic expansion valve (EXv)
The EXV is equipped with a stepper motor (2625 + 160 /- 0
steps) that is controlled via the EXV board.
15.6 - Moisture indicator
Located on the liquid line, permits control of the unit charge
and indicates moisture in the circuit. The presence of
bubbles in the sight-glass indicates an insufficient charge or
non-condensables in the system. The presence of moisture
changes the colour of the indicator paper in the sight-glass.
15.7 - filter drier
This is a one-piece, brazed filter drier, located in the liquid
line. The role of the filter drier is to keep the circuit clean
and moisture-free. The moisture indicator shows when it is
necessary to change the filter drier. The filter drier is a bi-flow
device, that means that it filters and dehydrates in both
operating modes. The pressure drop is much higher in the
heating mode. A difference in temperature between the
filter inlet and outlet shows that the element is dirty.
30RQS standard* or
with option 15lS
%
32.2
A
Static
N(2013) 36
38.7
See label on unit
Simonin
A.O. Smith
00PSG000000100A
00PPG000464500A
kW
0.95
m
/s
3.20
3
Pa
97
r/s (rpm)
12 (713)
1.002
See service manual
See service manual
30RQS standard**
30RQSY standard or 30RQS
standard with option 42
34.0
40.4
A
A
Static
Static
N(2013) 36
N(2013) 36
37.4
44.3
See label on unit
See label on unit
Simonin
Simonin
A.O. Smith
A.O. Smith
00PSG000000100A
00PSG000000100A
00PPG000464600A
00PPG000464700A
2.84
2.46
4.27
5.12
172
248
16 (950)
19 (1140)
1.002
1.002
See service manual
See service manual
See service manual
See service manual
37
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