Electronic Expansion Valve (Exv); Moisture Indicator; Refrigerant Accumulator With Built-In Filter Drier; Water Heat Exchanger - United Technologies Carrier 30RQM 160 Installation, Operation And Maintenance Instructions

9 - MAIN COMPONENTS OF THE UNIT AND OPERATING CHARACTERISTICS
In accordance with regulation No. 640/2009 and amendment 4/2014 implementing Directive 2009/125/EC concerning eco-design
requirements for electric motors
Product
Option
Motor type
Number of poles
Nominal input frequency
Nominal voltage
Number of phases
Motor included in the application domain of the regulation 640/2009 and amendment
4/2014
Justification for exemption
Ambient air temperature for which the motor is specifically designed
(1) Only for the lead fan on each circuit; the other fans are Standard

9.5 - Electronic expansion valve (EXV)

The EXV has a stepper motor (2785 to 3690 steps depending on
the model), and a sight glass that enables verification of the
mechanism movement and the presence of the liquid gasket.

9.6 - Moisture indicator

Located on the EXV, this enables control of the unit charge and
indicates moisture in the circuit.
The presence of bubbles in the sight glass in cooling mode
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 (from green to yellow).
9.7 - Refrigerant accumulator with built-in filter
drier
The refrigerant charge required in cooling mode is greater than
the permissible refrigerant charge in heating mode. The
accumulator is used to store the excess charge in heating mode.
A removable element and metal filter keep the refrigerant circuit
clean and free from moisture, by capturing solid contaminants.
When the moisture indicator turns yellow, it is necessary to change
the element. When the unit is operating in cooling mode, a
difference in temperature between the accumulator inlet and outlet
indicates fouling of the element and/or filter.

9.12 - Power factor correction capacitors (option 231)

The power factor correction is active for all of the machine's operating conditions.
A power factor performance of 0.95 is guaranteed when the unit is running in conditions which require a power supply that exceeds
the Eurovent standard condition.
A capacitor bank is controled by a regulator which read the current draw by the unit and ajust the power factor with a set up at 0,95.
The capacitors are dry type: no risk of leakage or fire.
They are selected for each unit according to the table below:
Unit size RQM/P
Capacitors Capacity (kVAR)
Capacitor 1
Capacitor 2
Capacitor 3
Caution: Operation of the unit without capacitors results in current raising
42
160 180
30 30
Capacity (kVAR) 10 10
Ir(A) 14 14
Capacity (kVAR) 20 20
Ir(A) 29 29
Capacity (kVAR) - -
Ir(A) - -
30RQM
Standard
Asynchronous Asynchronous Asynchronous Asynchronous
6
Hz 50
V 400
3
NO
Article 2.1
°C 70

9.8 - Water heat exchanger

The exchanger is a brazed plate heat exchanger with two
refrigerant circuits. It has been tested and stamped for a maximum
operating pressure of 4520 kPa on refrigerant side and of 3200
kPa on the water side. The water connections of the heat
exchanger are Victaulic connections.
The water heat exchanger is thermally insulated with 19 mm of
nitrile foam rubber (elastomer). As an option it can be protected
against frost by an electric heater (option 41: water heat exchanger
frost protection).

9.9 - Refrigerant

30RQM/30RQP units operate with R-410A.

9.10 - High-pressure safety pressostat

30RQM/30RQP units are equipped with high pressure safety
switches with automatic reset on the HP side. These pressure
switches are located at the discharge of each circuit.

9.11 - Variable frequency drive

30RQP units are equipped with variable frequency drives to control
the fan speed within the fmin-fmax frequency range (for the
standard 30RQP, fmin=5 Hz and fmax=50 Hz). All fans on the
same refrigerating circuit are actuated and controlled by a single
variable frequency drive. Fan speed is changed by generating a
controlled waveform in which frequency and voltage are varied
(Pulse Width Modulation). Fan start-up/shut-down and the working
range frequency setpoint is controlled by the Carrier Controller
through RS485 communication using the LEN Protocol.
210 230 240 270
40 40 40 50
10 10 10 10
14 14 14 14
10 10 10 20
14 14 14 29
20 20 20 20
29 29 29 29
30RQM 30RQP
Option 28 Standard
(1)
6 6
50 50
400 400
3 3
NO NO
Article 2.1 Article 2.1
70 70
310 330 380 430
50 60 70 80
10 20 10 20
14 29 14 29
20 20 20 20
29 29 29 29
20 20 40 40
29 29 58 58
30RQP
Option 12
6
60
400
3
NO
Article 2.1
70
470 520
80 80
20 20
29 29
20 20
29 29
40 40
58 58