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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 specic 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 ns. 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.
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 that is controlled via
the SIOB 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 insufcient 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 lter drier, located in the liquid line.
The role of the lter drier is to keep the circuit clean and moisture-
free. The moisture indicator shows when it is necessary to change
the lter drier. The lter drier is a bi-ow device, that means that
it lters and dehydrates in both operating modes. The pressure
drop is much higher in the heating mode. A difference in
temperature between the lter inlet and outlet shows that the
element is dirty.
According to the Regulation No. 327/2011 implementing Directive 2009/125/EC with regard to ecodesign requirements for fans driven
by motors with an electric input power between 125 W and 500 kW.
Product/option
30RQS standard
(1)
or
with option 15LS
30RQS standard
(2)
30RQSY standard or
30RQS standard with
option 42
Global fan efciency % 36.6 38.0 39.8
Measurement category A A A
Efciency category Static Static Static
Energy efciency target N(2015) N(2015) 40 N(2015) 40 N(2015) 40
Efciency level at the optimal energy efciency point 43.3 37.4 43.7
Variable frequency drive No No Yes
Year of manufacture See label on unit See label on unit See label on unit
Fan manufacturer Simonin Simonin Simonin
Motor manufacturer A.O. Smith/Regal Beloit A.O. Smith/Regal Beloit A.O. Smith/Regal Beloit
Fan reference 00PSG000000100A 00PSG000000100A 00PSG000000100A
Motor reference 00PPG000464500A 00PPG000464600A 00PPG000464700A
Nominal motor capacity kW 0.88 2.09 2.41
Flow rate m
3
/s 3.59 4.07 5.11
Pressure at optimum energy efciency Pa 90 195 248
Speed rpm 710 966 1137
Specic ratio 1.002 1.002 1.002
Product disassembly, recycling or disposal at end of life See service manual See service manual See service manual
Information about minimising environmental impact See service manual See service manual See service manual
(1) Only for sizes 039-050 and 080-120
(2) Only for sizes 060-078 and 140-160
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