The entire programme of Grasso two-stage screw compressor packages contains 14 different basic models, using different booster compressors. Depending on refrigeration capacity required at intermediate temperature, a selection of compressors for the high pressure stage can be used. Due to this modular design, the capacity can be increased considerably, for less additional costs. FEATURES OF GRASSO TWO-STAGE SCREW COMPRESSOR PACKAGES:

• Low space requirement
• Compact and simple appearance due to the common oil supply system
• Optimised performance with two-stage operation and interstate cooling
• Exact adaptation to cooling capacity requirements through balanced selection programmers
• Unloaded start of both low- and high-pressure compressors
• Steeples capacity regulation
• Availability of additional intermediate cooling capacity due to the option of larger high-pressure compressors
• Stand-by facility through the individual operation of the high-pressure compressor