58
11.2.2 - Oil separator
In these units, the oil separator is a pressure vessel that is mounted
under the outside vertical condenser coils. Dis-charge gas at the
compressor outlet is directed towards the bottom of the oil separator
ring and most of the oil separates from the gas by strong
deceleration and by gravity. The gas then flows through a wire
mesh screen where the remaining oil is separated by coalescence
and flows to the bottom of the ring. The gas is now free from oil
and leaves the ring at the top towards the condenser.
The oil separator is equipped with a trace heater regulated by the
control.
11.2.3 - Economiser function
The economiser function includes a liquid line valve, a filter drier,
two EXVs, a plate heat exchanger as well as protection devices
(fuse or valve).
At the condenser outlet a part of the liquid is expanded via the
secondary EXV in one of the heat exchanger circuits and then
returns as gas at the compressor economiser. This expansion
permits increase of the liquid sub-cooling of the rest of the flow that
penetrates the evaporator via the prin-cipal EXV. This permits
increasing the cooling capacity of the system as well as its
efficiency.
11.3 - High-pressure safety switch
30XB units are equipped with high-pressure safety switches.
In accordance with the applicable code the high-pressure switches
with manual reset, called PZH (former DBK), may be backed up
by high-pressure switches that require resett-ing with a tool. The
high-pressure switches that require resetting with a tool are called
PZHH (former SDBK). If a PZHH cuts out, the corresponding PZH
in the same com-pressor is faulty and must be replaced. The PZHH
must be reset with a blunt tool with a diameter of less than 6 mm.
Insert this tool into the opening on the pressure switch and push
the reset button in this location.
These pressure switches are located at the discharge of each
compressor.
11.4 - Condensers
30XB coils are all-aluminium micro-channel condensers. Optional
coils with internally grooved copper tubes with aluminium fins are
also available (options 254 and 255).
11.5 - Fans
The fans are axial Flying Bird fans equipped with 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 insulation class F (level IP55).
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.
30XB
30XB Standard
30XB Option 15LS
30XBP
Overall efficiency
%
38,7
35,3
47,3
Measurement category
A
A
A
Afficiency category
static
static
static
Target effciency level ERP2015
N(2015) 40
N(2015) 40
N(2015) 40
Effciency level at optimum efficiency point
43,3
42,1
52,2
Variable speed drive
NO
NO
YES (embedded)
year of manufacture
See label on the unit
See label on the unit
See label on the unit
Fan manufacturer
Simonin
Simonin
Simonin
Motor manufacturer
Leroy Somer
Leroy Somer
EBM Papst
Fan PN
00PSG002630700
00PSG002630700
00PSG002630700
Motor PN
00PPG000478400A
00PPG000478500A
00PSG002696800A
Nominal power of the motor
kW
1,9
0,85
1,68
Flow rate
m
3
/s
4,22
3,1
4,24
Pressure at optimum energy efficiency
Pa
174,2
96,7
174,6
Nominal speed
rpm
949
710
959
specifica ratio
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
Relevant information to minimise the
impact on the environment
See the maintenance manual See the maintenance manual See the maintenance manual
11 - MAJOR SYSTEM COMPONENTS AND OPERATION DATA
Summary of Contents for AquaForce 30XB series
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