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Danfoss Scroll compressor SZ175-4 solder 400V

Order No.: 107.2404
Manufacturer number: SZ175-4CAI
Manufacturer: Danfoss

More in this category: Scroll

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Description

In Danfoss Performer® scroll compressors, compression takes place between two scroll elements positioned in the upper area of the compressor housing above the motor (see diagram). The intake nozzles on the compressor are located in the lower area of the housing. The intake gas enters the ...

In Danfoss Performer® scroll compressors, compression takes place between two scroll elements positioned in the upper area of the compressor housing above the motor (see diagram). The intake nozzles on the compressor are located in the lower area of the housing. The intake gas enters the large volume compressor housing and is guided through the lateral openings in the motor plate and across the motor. Any oil droplets that are also pulled through are separated from the intake gas and deposited into the oil sump. The gas that is guided across the motor cools the motor and is then guided into the scroll unit.

The compressor system consists of 2 scrolls (spirals), an orbital scroll and a fixed scroll. The figure on page 5 explains the compression process. The upper spiral containing the pressurised gas outlet remains static while the lower spiral performs an eccentric motion. Both spirals are held at a fixed angle to one another (180 °) using a special drive unit. When the lower spiral moves into the upper spiral, a crescent shaped compression area is created, the volume of which reduces towards the centre of the spirals. Throughout the steady working process of the two spirals moving inside one another, suction, compression and output takes place. Three rotations are required to fully compress the volume, producing consistent and gentle compression. A check valve is located at the outlet of the scroll. This protects the compressor from backflow when switched off. The pressurised gas nozzle is located on the side towards the top of the compressor housing.

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Accessories / Replacement parts

  • Crankcase heater
    Danfoss oil sump heater 400V 75W f.SZ/SM175-185, LFZ / MFZ250 7773118
    Order No.: 107.2602
  • Danfoss oil sump heater 230V 75W f.SZ/SM175-185, LFZ / MFZ250 7773108
    Order No.: 107.1649
  • Junction box
    Danfoss junction box with cover f. SM/SZ 115-185 8156139
    Order No.: 107.2629
  • Mounting set
    Danfoss mounting kit for SZ / SM single compressor 8156138
    Order No.: 107.1758
  • Oil sight glass
    Danfoss oil sight glass compl. MT/E/Z18-81 1-1/8''-18UNEF 8156019
    Order No.: 107.6868
  • Pressurised gas temperature protection
    Danfoss pressurised gas temperature protection Kit for SZ/SM/LFZ/MFZ 7750009
    Order No.: 107.2605
  • Refrigerator oil
    Danfoss refrigeration oil can 1L 160 SZ
    Order No.: 531.0712
  • Danfoss refrigeration oil can 2,5L 160 SZ
    Order No.: 531.0717
  • Rotalock valve, delivery side
    Danfoss rotalock valve press.gau.conn.right/byp.conn.left 1-3/4''x28mm + 1-1/8'' solder 8168028
    Order No.: 107.1618
  • Rotalock valve, intake side
    Danfoss rotalock valve press.gau.conn.right/byp.conn.left 2-1/4''x42mm solder V03 8168026
    Order No.: 107.1630
  • Seal, delivery side
    Rotalock seal 1-3/4'' Teflon 8156132
    Order No.: 107.1803
  • Seal, intake side
    Rotalock seal 2-1/4'' Teflon 590032000 (8156133)
    Order No.: 107.1808
  • Sealing set
    Danfoss seal kit f. SM / SZ / LFZ / MFZ 8156013
    Order No.: 107.1749
  • Solder sleeves, delivery side
    Danfoss solder socket P02 1-3/4''x28mm solder 8153004
    Order No.: 107.1636
  • Solder sleeves, intake side
    Danfoss solder socket P03 2-1/4''x42mm solder 8153006
    Order No.: 107.1755
  • Sound insulation hood
    Danfoss sound insulation hood f. SM/SZ175-185 7755007
    Order No.: 107.1748

Technical data

General information
Type
vollhermetisch
Refrigerant
R134a
 
R513A
 
R407C
Original No.
SZ175-4CAI
Type
SZ175-4
Compression type
Scroll
Connections
Solder connection suction line
1-5/8 ODF Inch
Electrical Data
Motor voltage code 4
MMT A
35 A
siehe Erläuterung
LRA A
175 A
siehe Erläuterung
R
0,77 Ω
siehe Erläuterung
Supply voltage
400/3/50 V/Ph/Hz
max. operating current
34,0 A
Weight
Weight net
100,0 kg
Performance data
Displacement volume
233 cm³
2900 rpm-1 at 50 Hz
Pipe connections
Pressure line
1 1/8 Inch
ODF
Suction line
1 5/8 Inch
solder
Sound data
Sound power level
81,0 dB(A)
73,0 dB(A)
mit Schalldämmhaube
Volume
Oil charge
160SZ
Oil quantity
6,2 l

Note

Motor voltage code 4 = rated voltage 400 V - 3 - 50 Hz, voltage range 340 - 440 V
MMT: Maximum permitted shut-off current: In order to avoid damage to the compressor, the electricity supply to the compressor must be interrupted no later than at the specified current values using an external overcurrent relay. These current values must never be exceeded.
MCC: Max permitted operating current: The current at which the motor protection switch is triggered.
LRA: Start-up current: Measured with locked rotor, 4 seconds after switching on.
R: Motor winding resistance ( T1 - T2 , T2 - T3, T3 - T1)

Technical modifications reserved. Product images may differ from the actual product and are meant for demonstration purposes only. Absolutely no liability can be assumed for possible indication errors and errors in the manufacturers’ information.
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