![background image](http://html1.mh-extra.com/html/carrier/30rqm-160/30rqm-160_installation-operation-and-maintenance-instructions_2563118042.webp)
42
9 - MAIN COMPONENTS OF THE UNIT AND
OPERATING CHARACTERISTICS
9.1 - Compressors
30RQM/30RQP units use hermetic scroll compressors. Each
compressor is equipped as standard with a crankcase oil heater,
and with a head heater for certain configurations. There is no
heater fault detection.
Each compressor sub-assembly has:
•
Anti-vibration mountings between the unit chassis and the
chassis of the compressor sub-assembly,
•
Restrictors (not visible) on the suction pipes (for 3 and
4 compressor modules) to ensure oil level equalisation
between all compressors,
•
A safety pressure switch at the discharge line of each circuit,
•
Pressure and temperature sensors at the common suction
line and a pressure sensor at the common discharge line,
•
A suction shut-off valve.
9.2 - Lubricant
The compressors installed on the units have an oil charge of 6.9
l, ensuring good lubrication under all operating conditions. The
oil level check can be performed:
•
Upon installation: The oil level must be greater than or
equal to half of the sight glass.
•
Within a few minutes of the shut-down of a compressor
sub-assembly: oil must be visible in the sight glass.
If this is not the case, there might be a leak or an oil trap in the
circuit. If there is an oil leak, find and repair it, then refill with
refrigerant and oil.
See the Service Guide for the oil removal and refill procedures.
CAUTION: Too much oil in the circuit can cause the unit to
malfunction.
NOTE: Only use oils which have been approved for the
compressors. Never use oils which have been exposed to air.
CAUTION: R-22 oils are absolutely not compatible with
R-410A oils and vice versa.
9.3 - Air coils
The coils on 30RQM/30RQP units are composed of aluminium
fins crimped onto internally grooved copper tubes. Their
construction ensures optimal subcooling in cooling mode.
9.4 - Fans
The fan motors are axial Flying Bird fans equipped with a
rotating shroud and made of composite recyclable material. Each
motor is fixed with transverse supports. The motors are three-
phase, with permanently lubricated bearings and class F
insulation.
For detailed information, refer to the table below:
According to the Regulation No. 327/2011 implementing Directive 2009/125/EC with regard to eco-design requirements for fans
driven by motors with an electric input power between 125 W and 500 kW.
Product
30RQM
30RQM
30RQP
30RQP
Option
Standard
Option 28
(1)
Standard
Option 12
Overall efficiency
%
39.3
41
41
40.9
Measurement category
A
A
A
A
Efficiency category
Static
Static
Static
Static
Target efficiency level ERP2015
N(2015) 40
N(2015) 40
N(2015) 40
N(2015) 40
Efficiency level at optimum efficiency point
43.9
45.7
45.7
44.2
Variable speed drive
NO
YES
YES
YES
Year of manufacture
See label on the unit
See label on the unit
See label on the unit
See label on the unit
Fan manufacturer
Simonin
Simonin
Simonin
Simonin
Motor manufacturer
Leroy Somer
Leroy Somer
Leroy Somer
Leroy Somer
Fan PN
00PSG000000100A
00PSG000000100A
00PSG000000100A
00PSG000000100A
Motor PN
00PPG000478400A
00PPG000478400A
00PPG000494700A
00PPG000480800A
Nominal power of the motor
(2)
kW
1.85
1.84
1.84
2.97
Flow rate
(2)
m
3
/s 4.28
4.15
4.15
5.31
Pressure at optimum energy efficiency
(2)
Pa
170
170
170
216
Nominal speed
(2)
rpm
954
950
950
1127
Specific ratio
1.002
1.002
1.002
1.002
Relevant information to facilitate the
disassembly, recycling or removal of the
product at the end of life
See the Maintenance manual See the Maintenance manual See the Maintenance manual See the Maintenance manual
Relevant information to minimise impact
on the environment
See the Maintenance manual See the Maintenance manual See the Maintenance manual See the Maintenance manual
(1) Only for the lead fan on each circuit; the other fans are Standard
(2) Aerodynamic tests carried out in a laboratory on the fan motor assembly only, in accordance with regulation No. 327/2011