Semi-hermetic, suction gas-cooled 6-cylinder reciprocating compressor in
compact design especially for the use with hydrocarbons. The best possible
serviceability is provided by means of a replaceable drive motor, among other
things. The compressor stands out due to its outstanding running comfort and
efficient operating performance. Dependable mechanism lubrication is guaranteed
by means of an oil pump which is independent of rotating direction, as well as a
large-volume oil sump. The large-volume electric terminal box in solid metal
design has a fold-back and removable hinged lid with easy quick-release
fasteners. The standard oil sump heating is carried out using an immersion
sleeve and can therefore be replaced without intervening in the refrigeration
cycle.
A direct connection facility for an oil level regulator is possible on one of
the three standard sight glasses. The electronic motor protection MP10 (for
installation in the switch cabinet) with optical status indication uses PTC
sensors in series to monitor the winding temperature and, if desired, the
discharge gas temperature. The compressor has to be equipped with heat
protection thermostat and oil sump heater. The oil filling is the special oil
Synth 68. To ensure the safety measures, an additional agreement has to be
signed.
Colour: blue (RAL 5000)
Technical data
HG7/1860-4 S HC
Application | Refrigeration & AC |
Compressor refrigeration capacity | 72.70 kW |
Power consumption | 29.80 kW |
Current draw (400 V) | 60.80 A |
Mass flow | 0.248 kg/s |
at following operating condition:
Refrigerant | R290 |
Reference temperature | Dew point |
Evaporating temperature | -10.0 °C |
Condensing temperature | 45.0 °C |
Supply frequency | 50 Hz |
Voltage | 400 V |
Suction gas temperature | 20 °C |
Subcooling (outside cond.) | 0 K |
Number of cylinders / Bore / Stroke | 6 / 75 mm / 70 mm |
Displacement 50/60 Hz (1450/1740 ¹/min) | 161,40 / 193,70 m³/h |
Voltage 1) | 380-420V Y/YY -3- 50Hz PW |
| 440-480V Y/YY -3- 60Hz PW |
Winding divided into | 50% / 50% |
Max. working current 2) | 104.0 A |
Max. power consumption 2) | 56.7 kW |
Starting current (rotor blocked) 2) | 291.0 / 429.0 A |
Motor protection | MP10 |
Protection terminal box | IP 65 |
Weight | 293 kg |
Max. permissible overpressure (g) (LP/HP) 3) | 19 / 28 bar |
Connection suction line SV | 54 mm - 2 1/8 " |
Connection discharge line DV | 42 mm - 1 5/8 " |
Lubrication | Oil pump |
Oil type R290, R1270 | BOCKlub G68 |
Oil charge | 4,5 Ltr. |
Oil sump heater | 230 V - 1 - 50/60 Hz, 140 W |
Dimensions
Length / Width / Height | 830 / 510 / 500 mm |
Scope of supply
Semi-hermetic six-cylinder reciprocating compressor with drive motor
Single-section compressor housing with hermetically integrated electric motor
Oil pump
Winding protection with PTC resistor sensors. Electronic
triggering unit MP 10 to be fitted in switch cupboard (enclosed)
Possibility of
connection of oil level controllers ESK, AC+R or CARLY
Oil pump cover with screw-in option for oil differential
pressure sensor DELTA-P II
Possibility of connection of oil level controllers Traxoil 4)
Oil charge:
HG HC: BOCKlub G68
Two sight
glasses
Prepared for capacity regulator (2 cylinder covers)
Pressure relief valve
Suction and discharge line valve
Inert gas charge
4 anti-vibration pads enclosed
Accessories
Start unloader 230 V - 1 - 50/60 Hz, IP65, less check valve,
including
thermal protection thermostat (posistor tracer)
Start unloader by means of a ESS (Electronic Soft
Start), 400 V - 3 - 50/60 Hz, IP20 (Connection clamps IP00) for installation in
switch cabinet 5)
Capacity regulator 230 V - 1 - 50/60 Hz, IP65
1-2
capacity regulator = 66/33% residual capacity
Oil sump heater 230 V - 1 - 50/60 Hz, 140 W
Oil service valve
Oil differential pressure sensor DELTA-P II 220-240 V -
1 - 50/60 Hz 5)
Water-cooled cylinder covers
Connection piece suction and discharge valve in welding
design
Thermal protection thermostat per cylinder cover
Oil temperature sensor (Pt1000, for external evaluation)
5)
Additional fan
230 V AC - 1 - 50 Hz, 97 W,
IP44
230 V AC - 1 - 60 Hz, 128 W 5)
Intermediate adapter for discharge line valve 5)
Special voltage and/or frequency (on request)
Notes
1) | Tolerance (± 10%)
relates to the mean value of the voltage range. Other voltages and current types
on request
All data are based on voltage rms values
PW = part
winding, motors for part winding starting (no start unloaders required)
Designs for Y/D on request |
2) | - The stated value for the max. power consumption is valid
for the adjusted power supply.
- Starting current (rotor blocked):
- Part winding (PW) motors: Winding 1 / Winding 1+2
- Delta/Star (Δ/Y) motors: Δ / Y
- Take account of the max.
operating current / max. power consumption for designing motor contractors, feed
lines, fuses and motor protection switches. Motor contractors: Consumption
category AC3. |
3) | LP = Low
pressure HP = High pressure |
4) | Only with additional
adapter possible |
5) | Enclosure |