Description
The OS.(A)74-EX open-drive screw compressor series is dedicated to operation in hazardarous atmospheres zone 1 and zone 2. It is specially designed for installations in machines located in areas that are subject to the EU Explosion Protection Directive 2014/34/EU.
Refrigerants
- OS.A74-EX:
- Natural low-GWP refrigerant R717 (NH₃)
- OS.74-EX:
- HFC, HFC blends, HCFC, non-flammable A1
Product range
- Four models: 165 … 250 m³/h at 2,900 rpm
Certifications
- EU Explosion Protection Directive 2014/34/EU
Applications
- Explosion-proof process and A/C liquid chillers
Highlights
- Explosion-proof design according to EU Directive 2014/34/EU
- EU Explosion Protection Directive 2014/34/EU designation: Ex II 2G Ex h IIC T4 Gb X
- Applicable in zone 1 and zone 2 (EU Explosion Protection Directive 2014/34/EU) according to EU Directive 1999/92/EC
Capacity regulation
- Mechatronic capacity control
- Multi-stage capacity control (control pistons)
- Suitable for VSD operation
- OS.(A)74-EX: Speed range 1,450 … 4,000 rpm
Product versions
- OSK(A): MT and A/C applications
- OSN(A): LT and MT applications
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