CO2 compressors (subcritical)

CO 2 compressors (subcritical)
At a glance
Operating limits and performance data
Technical data
Dimensions and connections
Scope of supply and accessories
88
92
96
97
102

CO 2 compressors (subcritical) - At a glance
Based on our current semi-hermetic product range, with its outstanding
advantages and features, as well as our longstanding activities
and field applications for the transport sector, there is now a
perfectly matched compressor series available for subcritical CO 2
cascade systems.
Especially suited to supermarket refrigeration applications and industrial
refrigeration.
Possible overpressure of up to 43 bar.
Special features:
CO 2 as a refrigerant
Within refrigeration technology, carbon dioxide (CO 2 ) is known by
the name R744 and has a long history. It is a colourless gas which
liquefies under pressure and has a slightly acidic smell and taste.
Carbon dioxide has no ozone depletion potential (ODP=0) and a negligible
direct effect on global warming (GWP=1) when used as a
refrigerant in closed systems. It is not combustible, is chemically
inactive and heavier than air.
Carbon dioxide has a narcotic and asphyxiating effect on humans
only at higher concentrations.
Carbon dioxide is available naturally in large quantities.
As Bock compressors are extremely high quality and robust, the
coordination with the CO 2 is limited primarily to the motor design
together with the individual mechanism adjustments as well as
small modifications in the valve and seal areas.
This permits the greatest possible level of operational safety through
the extensive use of tried-and-trusted standard parts.
In addition, there are the best possible conditions for economic spare
part storage.
The current program
...4 model sizes with 14 capacity stages from 3,6 to 48,2 m³/h (50 Hz)
88 I www.bock.de

CO 2 compressors (subcritical) - At a glance
Type key | Compressors for CO 2 (subcritical)
HGX34P / 215 - 4 CO 2
CO 2 Version 3)
Number of poles
Swept volume
Pluscom 2)
Number of cylinders 2)
Size
Ester oil filling
Series 1)
1) HG = Hermetic Gas-cooled (suction gas-cooled)
2) Additional declaration for Pluscom compressors
3) CO 2 design for subcritical applications
01
02
03
04
05
06
07
08
09
10
11
12
13
www.bock.de I 89

CO 2 compressors (subcritical) - At a glance
Reliable and safe oil supply
Wear-resistant durable driving gear
- Classic lubricant circuit with an oil pump independent of the
rotating direction
- High volume oil sump
- Special oil charge for CO2: Bock C55E,
directly available from Bock
- Solid construction and design
- Low friction sleeve bearings
- Aluminium piston with two ring assembly
- Aluminium connecting rod with high resistance
piston bolt bearings
Valve plate construction for safe operation
Economic performance regulation
- Valve design, tried and trusted all over the world, with onesided
fixed finger reed valves, suction and pressure side
- Valve made out of high quality, impact resistant spring steel
Continuously variable speed control using Bock EFC
(Electronic Frequency Control)
optional for HGX12P, HGX22P, HGX34P
- compact installation on compressor and connected ready for use
- up to 25% lower energy consumption
- for additional information, see page 18
- for HGX4, infinite speed control through external frequency
converter (Bock EFCe)
Quiet with low vibrations
- Large dimensioned crankshaft area
- Dynamic mass balance
- High volume pressure area to dampen pulsations
- 4 cylinder construction from 19 m³/h
Thermal protection thermostat
Pressure gas temperature monitoring, PTC sensor direct
connection to the Bock MP10 motor protection
90 I www.bock.de

CO 2 compressors (subcritical) - At a glance
Oil sump heater
HGX12P, HGX22P, HGX34P (standard)
Oil sump heater
HGX4 (standard)
- PTC heater, self-regulating version, installation in housing bore
- Replacement possible without opening the refrigerating circuit
Bock MP10 electronic motor protection (standard)
- Temperature monitoring with PTC sensors and optical status
indication
- Discharge gas temperature sensor (option)
- For additional information, see page 15
- Design with immersion sleeve
- Replacement possible without opening the refrigerating circuit
Unloaded start using Bock ESS (Option)
(Electronic Soft Start)
- Optional for HGX22P and HGX34P
- Soft compressor start from zero to nominal speed, time
controlled and monitored
- No standard unloaded start required
- IP20 unit for control cabinet installation (included loose)
- For additional information, see page 26
01
02
03
04
05
06
07
08
09
10
11
12
13
Oil
The compressors are equipped with Bock C55E, a special oil filling,
which is available directly from Bock. This is a synthetic ester oil
with high thermal load resistance, allowing good mixing solubility
with CO 2 . It possesses a special additive, which protects the compressors
against wear, even when subjected to extreme loads, such
as those which exist in CO 2 systems. This oil can be used both in
transcritical and in subcritical systems.
temperature (C°)
40
30
20
0
-20
phase separation
-40
-50
-55
0
10
20
40
60
concentration (M-% oil in CO 2 )
www.bock.de I 91

CO 2 compressors (subcritical) - Operating limits
CO 2 Operating limits
HGX12P CO 2 1 / HGX22P CO 2 /
HGX34P CO 2 1 2 / HGX4 CO 2 1 3
Unlimited application range
t O
t C
∆t Oh
Evaporating temperature (°C)
Condensing temperature (°C)
Suction gas superheat (K)
1 HGX12P/75-4 CO 2 , HGX34P/215-4 CO 2
HGX4/385-4 CO 2 , HGX4/465-4 CO 2
Max. condensing temperature
t C
= 0 °C
Max. permissible operating pressure (LP/HP) 1) : 27/43 bar
1)
LP = low pressure HP = high pressure
2 HGX34P/255-4 CO 2
Max. condensing temperature
t C
= -5 °C
3 HGX4/555-4 CO 2
Max. condensing temperature
t C
= -7,5 °C
Notes
Operating limits
Compressor operation is possible within the limits shown on the
application diagrams. Please note the coloured areas.
Compressor application limits should not be chosen for design
purposes or continuous operation.
Restrictions to the operating limits may occur when using the
Bock EFC (Electronic Frequency Control).
The sample calculation on page 22 gives a more detailed explanation.
Performance data
The performance data for CO 2 are based on 20 K suction gas superheat
without liquid subcooling, at 50 Hz power supply frequency.
These are preliminary values as no uniform reference data are available.
Besides which the influence of the oil part on refrigeration performance
is largely unknown. Variations cannot be excluded.
Conversion factor for 60 Hz = 1.2
Performance data for other operating points, see Bock software.
92 I www.bock.de

CO 2 compressors (subcritical) - Performance data
CO 2 Performance data 50 Hz
Type
Cond.
temp.
°C
-20 Q
P
-15 Q
P
HGX12P/40-4 CO -10 Q
2 P
-5 Q
P
0 Q
P
-20 Q
P
-15 Q
P
HGX12P/50-4 CO -10 Q
2 P
-5 Q
P
0 Q
P
-20 Q
P
-15 Q
P
HGX12P/60-4 CO -10 Q
2 P
-5 Q
P
0 Q
P
-20 Q
P
-15 Q
P
HGX12P/75-4 CO -10 Q
2 P
-5 Q
P
0 Q
P
•
Cooling capacity Q O
[W]
Evaporating temperature °C
Power consumption P e
[kW]
-25 -30 -35 -40 -45 -50
9601
1,26
8982
1,59
8295
1,95
12019
1,60
11227
1,99
10358
2,41
14493
1,89
13478
2,38
12435
2,90
18009
2,28
16703
2,92
15354
3,56
8384
1,14
7859
1,41
7286
1,71
6664
2,01
10481
1,44
9813
1,76
9090
2,11
8308
2,49
12631
1,71
11774
2,12
10893
2,54
9995
2,98
15704
2,06
14617
2,61
13489
3,14
12335
3,68
7236
1,06
6779
1,25
6295
1,49
5781
1,75
5235
2,01
9040
1,30
8463
1,56
7856
1,85
7213
2,16
6530
2,49
10855
1,56
10136
1,90
9394
2,23
8637
2,58
7877
2,97
13484
1,87
12587
2,33
11650
2,77
10690
3,21
9720
3,66
5763
1,13
5342
1,31
4912
1,51
4470
1,73
4012
1,93
7195
1,40
6671
1,64
6137
1,89
5587
2,14
5015
2,41
8589
1,71
7965
1,97
7329
2,25
6690
2,54
6058
2,89
10652
2,08
9877
2,44
9081
2,79
8278
3,16
7482
3,55
4451
1,16
4079
1,31
3716
1,49
3357
1,66
3000
1,81
5554
1,45
5096
1,65
4647
1,85
4200
2,06
3750
2,25
6634
1,76
6096
1,96
5557
2,18
5027
2,44
4515
2,75
8211
2,15
7549
2,43
6883
2,71
6227
3,01
5596
3,36
3303
1,15
2993
1,28
2708
1,42
2445
1,54
4107
1,45
3727
1,61
3374
1,75
3042
1,89
4966
1,72
4506
1,88
4057
2,06
3627
2,28
6134
2,10
5576
2,31
5030
2,54
4511
2,80
01
02
03
04
05
06
07
08
09
10
11
12
13
Relating to 20 K suction gas superheat
without liquid subcooling
www.bock.de I 93

CO 2 compressors (subcritical) - Performance data
CO 2 Performance data 50 Hz
Type
94 I www.bock.de
Cond.
temp.
°C
-15
HGX22P/110-4 CO 2
-20
-10
-5
HGX22P/125-4 CO 2
-20
0
-15
-10
-5
-20
-15
HGX22P/160-4 CO 2 -10
0
-5
-20
-15
HGX22P/190-4 CO 2 -10
0
-5
-20
-15
HGX34P/215-4 CO 2 -10
0
-5
-20
-15
HGX34P/255-4 CO 2 -10
Relating to 20 K suction gas superheat
without liquid subcooling
0
-5
0
Q
P
Q
P
Q
P
Q
P
Q
P
Q
P
Q
P
Q
P
Q
P
Q
P
Q
P
Q
P
Q
P
Q
P
Q
P
Q
P
Q
P
Q
P
Q
P
Q
P
Q
P
Q
P
Q
P
Q
P
Q
P
Q
P
Q
P
Q
P
Q
P
Q
P
•
Cooling capacity Q O
[W]
Evaporating temperature °C
Power consumption P e
[kW]
-25 -30 -35 -40 -45 -50
25076
3,25
23420
4,11
21608
5,04
29581
3,85
27641
4,85
25513
5,94
36527
4,75
34112
6,00
31465
7,34
43940
5,73
41076
7,22
37909
8,80
50516
6,52
46888
8,32
43122
10,11
58817
7,62
54985
9,61
21879
2,95
20483
3,64
18963
4,40
17329
5,20
25813
3,49
24183
4,29
22386
5,19
20465
6,14
31876
4,29
29843
5,30
27634
6,41
25259
7,57
38332
5,17
35915
6,39
33275
7,70
30415
9,09
43976
5,85
40964
7,36
37822
8,83
34592
10,35
51421
6,92
48070
8,58
44587
10,34
18847
2,71
17661
3,25
16386
3,86
15031
4,51
13604
5,18
22221
3,21
20860
3,84
19352
4,56
17741
5,33
16068
6,13
27458
3,92
25727
4,72
23873
5,62
21907
6,57
19842
7,550
33044
4,70
30961
5,69
28740
6,76
26379
7,90
23880
9,08
37695
5,27
35215
6,54
32614
7,75
29933
8,97
27215
10,26
44289
6,31
41502
7,63
38461
9,08
35377
10,61
14985
2,93
13906
3,39
12782
3,92
11619
4,46
10426
5,00
17693
3,45
16434
4,02
15091
4,64
13708
5,29
12325
5,92
21833
4,25
20253
4,95
18615
5,71
16931
6,50
15215
7,30
26301
5,09
24386
5,95
22415
6,87
20388
7,82
18306
8,78
29752
5,83
27608
6,83
25393
7,80
23149
8,81
20918
9,92
35187
6,83
32671
7,97
29990
9,20
27354
10,49
11554
3,01
10612
3,41
9665
3,84
8723
4,27
7792
4,67
13654
3,54
12538
4,04
11402
4,56
10289
5,05
9239
5,51
16844
4,39
15452
4,97
14069
5,59
12707
6,22
11377
6,83
20299
5,26
18607
5,98
16941
6,73
15301
7,48
13690
8,21
22915
6,03
21082
6,80
19228
7,58
17395
8,44
15627
9,44
27123
7,05
24928
7,98
22656
8,99
20520
10,02
8553
2,99
7774
3,31
7033
3,64
6339
3,95
10104
3,50
9175
3,91
8288
4,30
7486
4,64
12490
4,35
11326
4,82
10236
5,29
9233
5,74
15039
5,21
13623
5,79
12316
6,36
11120
6,90
17110
5,95
15562
6,55
14045
7,20
12600
7,96
20098
7,02
18273
7,74
16461
8,51
14872
9,27

CO 2 compressors (subcritical) - Performance data
CO 2 Performance data 50 Hz
Type
Cond.
temp.
°C
•
Cooling capacity Q O
[W]
Evaporating temperature °C
Power consumption P e
[kW]
-25 -30 -35 -40 -45 -50
-15
HGX4/310-4 CO 2
-20
-10
-5
-20
-15
HGX4/385-4 CO 2 -10
0
-5
-20
-15
HGX4/465-4 CO 2 -10
0
-5
HGX4/555-4 CO 2
-20
0
-15
-10
-7,5
0
Q
P
Q
P
Q
P
Q
P
Q
P
Q
P
Q
P
Q
P
Q
P
Q
P
Q
P
Q
P
Q
P
Q
P
Q
P
Q
P
Q
P
Q
P
Q
P
Q
P
72216
9,39
67452
11,82
62223
14,44
89253
11,58
83376
14,62
76917
17,88
108690
13,99
101255
17,66
93763
21,59
128397
16,46
124273
18,70
63011
8,49
58989
10,47
54627
12,63
49926
14,93
77885
10,46
72929
12,93
67534
15,62
61719
18,47
94098
12,64
87548
15,63
80934
18,88
74250
22,30
112043
15,07
104916
18,78
101110
20,70
54304
7,77
50853
9,33
47186
11,08
43304
12,96
39207
14,91
67112
9,56
62874
11,52
58340
13,70
53529
16,02
48458
18,43
81242
11,58
75597
13,93
69880
16,56
64088
19,36
58213
22,26
96522
13,72
90446
16,70
83925
19,84
80510
21,46
43175
8,39
40031
9,76
36797
11,26
33471
12,83
30055
14,42
53374
10,35
49498
12,06
45487
13,92
41360
15,86
37135
17,81
64619
12,52
59820
14,58
54938
16,83
49967
19,17
44900
21,52
76757
14,86
71198
17,34
65428
19,95
62478
21,30
33295
8,64
30535
9,80
27810
11,03
25117
12,28
22459
13,49
41168
10,67
37755
12,11
34368
13,63
31026
15,16
27749
16,65
49971
12,91
46019
14,65
41971
16,49
37821
18,34
33563
20,12
59196
15,27
54300
17,29
49429
19,42
47017
20,52
24652
8,55
22354
9,48
20214
10,43
18232
11,33
30494
10,56
27644
11,71
24983
12,88
22529
13,99
36548
12,79
33443
14,18
30228
15,59
26900
16,93
43843
15,27
39757
16,89
35932
18,58
34131
19,45
01
02
03
04
05
06
07
08
09
10
11
12
13
Relating to 20 K suction gas superheat
without liquid subcooling
www.bock.de I 95

CO 2 compressors (subcritical) - Technical data
CO 2
Number
of
cylinders
Displacement
50 / 60 Hz
(1450/1740 1 /min)
Electrical data 3 Weight Connections 6 Oil charge
Voltage Max. Max. power Starting
Discharge line Suction line
working consumption current
DV
SV
current
(rotor locked)
1
2
2
m³/h A kW A kg mm I inch mm I inch Ltr.
Type
∆ / Y
∆ / Y
HGX12P/40-4 CO 2 2 3,60 / 4,40 4 7,3 / 4,2 2,3 43 / 25 49 12 / 1 / 2 16 / 5 / 8 0,9
HGX12P/50-4 CO 2 2 4,50 / 5,40 4 8,7 / 5,0 2,9 43 / 25 49 12 / 1 / 2 16 / 5 / 8 0,9
HGX12P/60-4 CO 2 2 5,40 / 6,40 4 9,5 / 5,5 3,2 45 / 26 49 12 / 1 / 2 16 / 5 / 8 0,9
HGX12P/75-4 CO 2 2 6,70 / 8,10 4 10,6 / 6,1 3,6 45 / 26 49 12 / 1 / 2 16 / 5 / 8 0,9
HGX22P/110-4 CO 2 2 9,40 / 11,30 4 18,9 / 10,9 6,0 121 / 70 78 16 / 5 / 8 22 / 7 / 8 1,1
HGX22P/125-4 CO 2 2 11,10 / 13,30 4 20,9 / 12,1 7,2 121 / 70 78 16 / 5 / 8 22 / 7 / 8 1,1
HGX22P/160-4 CO 2 2 13,70 / 16,40 4 25,6 / 14,8 8,8 121 / 70 82 16 / 5 / 8 22 / 7 / 8 1,1
HGX22P/190-4 CO 2 2 16,50 / 19,80 4 29,9 / 17,3 9,9 134 / 77 84 16 / 5 / 8 22 / 7 / 8 1,1
HGX34P/215-4 CO 2 4 18,80 / 22,60 4 32,4 / 18,7 11,1 134 / 77 98 16 / 5 / 8 22 / 7 / 8 1,4
HGX34P/255-4 CO 2 4 22,10 / 26,60 4 32,4 / 18,7 11,1 134 / 77 97 16 / 5 / 8 28 / 1 1 / 8 1,4
* PW1+2 * PW1 / PW1+2
HGX4/310-4 CO 2 4 27,10 / 32,50 5 28,2 16,5 82 / 107 152 22 / 7 / 8 28 / 1 1 / 8 3,4
HGX4/385-4 CO 2 4 33,50 / 40,20 5 31,6 18,5 82 / 107 151 22 / 7 / 8 28 / 1 1 / 8 3,4
HGX4/465-4 CO 2 4 40,50 / 48,60 5 38,3 22,3 107 / 140 154 28 / 1 1 / 8 35 / 1 3 / 8 3,4
HGX4/555-4 CO 2 4 48,20 / 57,80 5 38,3 22,3 107 / 140 157 28 / 1 1 / 8 35 / 1 3 / 8 3,4
* PW = Part Winding, motors for part winding start 1 = 1. part winding 2 = 2. part winding
Explanations:
1
2
3
4
5
6
Tolerance (± 10%) relates to the mean value of the voltage
range. Other voltages and current types on request.
Take account of the max. operating current / max. power
consumption when designing contactors, leads and fuses.
Switches: Service category AC3
All data are based on the mean value of the voltage range.
220-240 V ∆ / 380-420 V Y - 3 - 50 Hz
265-290 V ∆ / 440-480 V Y - 3 - 60 Hz
380-420 V Y/YY - 3 - 50 Hz PW
440-480 V Y/YY - 3 - 60 Hz PW
PW = Part Winding, motors for part winding start
(no start unloaders required)
-- Winding ratios: 66% / 33%
-- Designs for Y/ ∆ on request
For soldering connections
Oil sump heater 110-240 V - 1 - 50/60 Hz
-- HGX12P, HGX22P, HGX34P: 50-120 W
PTC heater, self-regulating, installation in housing bore
Oil sump heater 230 V - 1 - 50/60 Hz
-- HGX4: 80 W
Permanently set version, installation in immersion sleeve
96 I www.bock.de

CO 2 compressors (subcritical) - Dimensions and connections
HGX12P CO 2
HGX12P/40-4 CO 2 HGX12P/50-4 CO 2 HGX12P/60-4 CO 2 HGX12P/75-4 CO 2
B1
ca.240
100
DV B
ca.115
66
ca.30
J
SV 1)
A1
ca. 280
244
98
A
L1
E
H,D1
K,O
F
ca.135
4x 10
208
162
318
192
ca.415
HGX22P CO 2
HGX22P/110-4 CO 2 HGX22P/125-4 CO 2 HGX22P/160-4 CO 2 HGX22P/190-4 CO 2
ca.135
H,D1
DV B1
A
L1
SV
A1
1)
ca.310
264
115
88
B
E
K,O
F
J
01
02
03
04
05
06
07
08
09
10
11
12
13
ca.20
109
ca.135
223
361
ca.505
4x 12
198
ca.240
Dimensions in mm
1)
SV 90° rotatable
Centre of gravity
-- Connections see page 99
-- Dimensions for anti-vibration pad see page 100
www.bock.de I 97

CO 2 compressors (subcritical) - Dimensions and connections
HGX34P CO 2
HGX34P/215-4 CO 2 HGX34P/255-4 CO 2
A
B
DV
ca.285
B1
A
ca.135
A1
SV 1)
A1
ca.315
271
115
L1
E
F
H,D1
K,O
J
ca.165
43
310
74 420
ca.510
4x 12
230
272
HGX4 CO 2
HGX4/310-4 CO 2 HGX4/385-4 CO 2 HGX4/465-4 CO 2 HGX4/555-4 CO 2
DV
L1
A
B
ca.360
306
B1
SV
A
A1
1)
ca.180
405
ca.
278
170
D
P
F
J
C
E
H
D1
O
K
X
73
112
ca.235
436
535
ca.690
Q
4x
11
280
330
ÖV
24
Dimensions in mm
1)
SV 90° rotatable
Centre of gravity
-- Connections see page 99
-- Dimensions for anti-vibration pad see page 100
-- Dimensions for view X see page 101
98 I www.bock.de

CO 2 compressors (subcritical) - Dimensions and connections
Connections HGX12P CO 2 HGX22P CO 2 HGX34P CO 2 HGX4 CO 2
SV
DV
A
A1
B
B1
C
D
D1
E
Suction line
Discharge line
Please refer to technical data, page 96
Connection suction side,
not lockable
1
/ 8
" NPTF 1
/ 8
" NPTF 1
/ 8
" NPTF 1
/ 8
" NPTF
Connection suction side,
lockable
7
/ 16
" UNF 7
/ 16
" UNF 7
/ 16
" UNF 7
/ 16
" UNF
Connection discharge side,
not lockable
1
/ 8
" NPTF 1
/ 8
" NPTF 1
/ 8
" NPTF 1
/ 8
" NPTF
Connection discharge side,
lockable
7
/ 16
" UNF 7
/ 16
" UNF 7
/ 16
" UNF 7
/ 16
" UNF
Connection oil pressure
safety switch OIL 1) - - - 7
/ 16
" UNF
Connection oil pressure
safety switch LP 1) - - - 7
/ 16
" UNF
Connection oil return from
oil separator
1
/ 4
" NPTF 1
/ 4
" NPTF 1
/ 4
" NPTF 1
/ 4
" NPTF
Connection
oil pressure gauge
1
/ 8
" NPTF 1
/ 8
" NPTF 1
/ 8
" NPTF 1
/ 8
" NPTF
F Oil drain M 8 M 10 M 10 M 22 x 1,5
H Oil charge plug 1
/ 4
" NPTF 1
/ 4
" NPTF 1
/ 4
" NPTF M 22 x 1,5
J Oil sump heater Ø 15 mm Ø 15 mm Ø 15 mm M 22 x 1,5
K Sight glass 1 1 / 8
" - 18 UNEF 1 1 / 8
" - 18 UNEF 1 1 / 8
" - 18 UNEF 4 Loch M 6
L1 Thermal protection thermostat 1
/ 8
" NPTF 1
/ 8
" NPTF 1
/ 8
" NPTF 1
/ 8
" NPTF
O Connection oil level regulator 1 1 / 8
" - 18 UNEF 1 1 / 8
" - 18 UNEF 1 1 / 8
" - 18 UNEF 1
ÖV
P
Q
Connection
oil service valve
Connection oil pressure
differential sensor
Connection
oil temperature sensor
1 Dimensions see view X page 101
- - - 1
/ 4
" NPTF
- - - M 20 x 1,5
- - - 1
/ 8
" NPTF
01
02
03
04
05
06
07
08
09
10
11
12
13
www.bock.de I 99

Maß A Maß B Maß C
HG12P CO2+R410A ca.460 ca.500 ca.315
HG22P CO2+R410A ca.550 (515) * ca.595 ca.350
HG34P CO2+R410A ca.550 ca.620 ca.350
CO 2 compressors (subcritical) - Dimensions and connections
*) Maße in ( ) nur für HGX22P/125-4 R410A
Dimensions in ( ) only for HGX22P/125-4 R410A
Cotes en ( ) seulement pour HGX22P/125-4 R410A
Dimensions with accessories HGX12P CO2 HGX22P CO2 HGX34P CO2
C
1
B
A
1
Additional fan
Type A B C
mm mm mm
HGX12P CO 2 ca. 460 ca. 500 ca. 315
HGX22P CO 2 ca. 550 ca. 595 ca. 350
HGX34P CO 2 ca. 550 ca. 620 ca. 350
Dimensions in ( ) = only for HGX22P/125-4 CO 2
Dimensions for anti-vibration pad
Type Ø a b c d
mm mm mm mm
HGX12P CO 2 30 30 M8 20
HGX22P CO 2 40 30 M10 20
HGX34P CO 2 40 30 M10 20
HGX4 CO 2 40 30 M10 20
100 I www.bock.de

CO 2 compressors (subcritical) - Dimensions and connections
Dimensions with accessories
HGX4 CO2
1
B
View X
C
D
Additional fan
E
F
1 2
A
Intermediate adapter for discharge line valve
Type A B C D E F G
mm mm mm mm mm mm mm
HGX4 CO 2 ca. 705 ca. 680 ca. 455 416 91 131 ca. 360
2
G
01
02
03
04
05
06
07
08
09
10
11
12
13
Possibility to connect to oil level regulator
HGX4... CO 2
Three-hole connection for oil level regulator
make ESK, AC+R, CARLY (3x M6, 10 deep)
Three-hole connection for oil level regulator
make TRAXOIL (3 x M6 x 10 deep)
Dimensions in mm
www.bock.de I 101

CO 2 compressors (subcritical) - Scope of supply
Scope of supply HGX12P CO 2 HGX22P CO 2 HGX34P CO 2 HGX4 CO 2
Semi-hermetic 2 cylinder reciprocating compressor
with drive motor for direct start
220-240 V ∆ / 380-420 V Y - 3 - 50 Hz
265-290 V ∆ / 440-480 V Y - 3 - 60 Hz
Single-section compressor housing with hermetically integrated electric motor
Semi-hermetic 4 cylinder reciprocating compressor
with drive motor for direct start
220-240 V ∆ / 380-420 V Y - 3 - 50 Hz
265-290 V ∆ / 440-480 V Y - 3 - 60 Hz
Single-section compressor housing with hermetically integrated electric motor
Semi-hermetic four cylinder reciprocating compressor
with drive motor for part winding start
380-420 V Y/YY - 3 - 50 Hz
440-480 V Y/YY - 3 - 60 Hz
Motor unit flanged onto the compressor housing
Winding protection with PTC resistor sensors and electronic
motor protection unit Bock MP10
Thermal protection thermostat (PTC sensor)
Oil pump cover with screwed connection for differential oil pressure sensor
(∆p-switch Kriwan make)
Direct connection possibility of oil level controllers
ESK, AC+R oder CARLY
Direct connection possibility of oil level controllers Traxoil
Oil sump heater 230 V - 1 - 50/60 Hz, 80 W
Oil sump heater 110-240 V - 1 - 50/60 Hz, 50-120 W
PTC heater, self regulating
Oil charge: Bock C55E
Sight glass
Decompression valve
Suction and discharge line valve
Inert gas charge
4 anti-vibration pads enclosed
102 I www.bock.de

CO 2 compressors (subcritical) - Accessories
Accessories HGX12P CO 2 HGX22P CO 2 HGX34P CO 2 HGX4 CO 2
1 Start unloader by means of a Bock-ESS (Electronic Soft Start)
IP20 (Connection clamps IP00) for installation in switch cabinet
2 Continuously variable speed control by means of a Bock EFC
(Electronic Frequency Control), compactly built onto compressor and
connected ready-to-operate
HGX12P: IP65 HGX22P/HGX34P: IP54
3 Continuously variable speed control by means of a Bock EFCe
(Electronic Frequency Control for individual installation) IP54
Oil differential pressure sensor
4
Compressor oil Bock C55E as 1 or 5 liter refill unit
4 Oil differential pressure sensor (∆p-switch Kriwan make)
220-240 V - 1 - 50/60 Hz
5 Oil service valve
6 Bock Compressor Management BCM2000 including oil pressure control,
oil temperature control (NTC), thermal protection thermostat (PTC)
per cylinder cover (only possible ex works)
7 Water-cooled cylinder covers
Sea water resistant water-cooled cylinder covers
8 Additional fan 220-240 V - 1 - 50/60 Hz,
72/68 W, IP44 enclosed
Additional fan 230 V ∆ / 400 V Y - 3 - 50 Hz, 120 W,
230-265 V ∆ / 400-460 V Y - 3 - 60 Hz, 190 W,
IP54 enclosed
9 Intermediate adapter for discharge line valve
1)
Voltage range ± 10%
ESS Electronic Soft Start
1
EFC Electronic Frequency Control
2
Oil service valve
5
1) 1) 1)
EFCe Electronic Frequency Control extern
3
BCM2000 Bock Compressor Management
6
01
02
03
04
05
06
07
08
09
10
11
12
13
Water-cooled cylinder covers
Additional fan
7 9
8
Intermediate adapter for discharge line valve
www.bock.de I 103