GA 55-75 Upgrade
GA 55-75 Design Objectives
Bring the noise level in line with the new products and
improve the efficiency on variant...
to achieve further sustainable...
GA 55-75 Upgrade
• Super Silenced Version
• High Efficiency -50
GA 55-75 Silenced version
GA 55-75 Silenced version
Outside dimensions:
unchanged
Noise level
67-69 dB(A)
Noise level:
Average noise levels acc. PN8CPT2, tolerance 2dB
Noise level: PN8CPT2
Actual standard: PN8CPT2
• Measurement:
• unit divided in sub-area’s
• sound power scanning-measurement on each area
• Result:
• calculation of average sound pressure level over parallelepiped
at 1m distance from unit; tolerance 2dB
Former standard: Cagi-Pneurop
• Measurement:
• sound pressure level on 4 sides at 1m distance and 1,5m height
• Result:
• logarithmic average of 4 measurements plus the highest figure
as a fifth measurement; tolerance +/- 3 dB
GA 55-75 / 50Hz : Noise level
GA 55-75: Noise level ranking
Noise level
Reducing noise and vibration at the source:
• Gearbox & coupling hsg
• Cooling fan
• Vibration dampers
• Additional items
Noise level
Top-technology vibro-acoustic geometry optimisation
by Finite Element Method (FEM) of gearbox &
coupling housing
Noise level
• radial type fan
• extra large dimensions
• low speeds (6 pole motor)
Laminar, high volume, low speed cooling air flow
providing high cooling efficiency at extremely low
noise levels
Low noise cooling fan design
Noise level
Vibration dampers
• on screw element
• on oil separator vessel
Noise level
Additional low noise items
• Extra noise baffling in front and around the motor
GA 55-75 Upgrade
Further improvements:
• Re - lay - outing of the electrical cubicle
• Standardised FF-by-pass connection
GA 55-75 Upgrade
Re-lay-outing of elec. cubicle:
improved perception
Improved customer
satisfaction
GA 55-75 Upgrade
G 2 1/2"
Outlet connection of FF by-pass
standardised on G 2 1/2"
More easy
installation
GA 55-75: FF by-pass
GA 55-75 Upgrade:
Full range of optional equipment (1)
• Modulating control
• Energy recovery
• Electronic drain
• OSD 90
• FF transformer
• ID bypass
• ID - kits
• Oil containing frame
GA 55-75 Upgrade:
Full range of optional equipment (2)
• Public Works version:
Main power isolator switch,
lifting eye, freeze/rain/ sense
of rot. protection, (heavy duty
intake filter)
• 8 bar versions
• Special RAL-code colour
• Tropical thermostat
• Communication module
GA 55-75 Upgrade:
Full range of optional equipment (3)
• DIOE/SIOE extension modules
• CCM-key switch
• Relay’s for ES100
• Russian GOST-stamp
• PAO oil
• PAG - bio-degradable lubricant
• Food-Grade oil
• Drive motor thermister protection
• Water shut-off valve
GA 55-75 Upgrade:
Optional equipment
Rain & sun
protection
Main power
isolator switch
GA 55-75 Upgrade:
Optional equipment
Rain & sun
protection
Main power
isolator switch
Energy
recovery
GA 55-75 Upgrade:
Optional equipment
OSD 90
Electronic
drain
Modulating
control
GA 55-75 Upgrade:
Optional equipment
Modulating
control
Energy
recovery
GA 55-75 Upgrade:
Optional equipment
Detail:
Modulating
control
GA -50 High Efficiency
GA -50 High Efficiency
• To counter long-time heavy competition on 75kW-
:
• Kaeser DS140
• CompAir Demag Regatta 140
• Both competitors offer 2 models on 75kW:
• small air-end, small capacity, less efficiency
• big air-end (similar to AC size-II air-end), high capacity,
high efficiency
• CompAir Demag: Rallye 110 / Regatta 140
• Kaeser: CS 121 / DS141
Competitor Comparison GA75-7,5
GA -50 High Efficiency
Development of -50 High Efficiency:
• Long screw element
• Derived from the element, standard on GA55-75
• Rotor length: = + 120 mm
• Especially tuned on application
• No rotor profile changes
• Direct Drive (DD) execution (no gears)
• Shorter DD-execution compensates partly for 120mm
increase in length
• Motor slightly repositioned on base frame
• Remaining compressor parts unchanged
Competitor Comparison GA 75
Competitor Comparison GA 75
GA -50 High Efficiency
• FAD: absolute world-wide
• Efficiency : In line with competitor’s top-models
• GA -50 High Efficiency will be introduced as
standard as bar variant
GA -50 High Efficiency
• New competitive situation:
Standard, cost effective GA75 High Efficiency
against
Low cost, Low efficiency Rallye / CS 121
or
High cost, High efficiency Regatta / DS 141
• Competitive strategy:
• Attack low end Rallye / CS 121 on efficiency
• Attack high end Regatta / DS(D)141 on mix of
efficiency & cost
GA 55-75 Upgrade: Conclusions
• Upgrade achievements:
• Silenced version
• -50 High Efficiency
• Combined with existing:
• Full Feature
• Integrated optional equipment
Compressor room - independent
compressor
Compressor room - independent
compressor
A reliable and highly efficient compressor...
• -recovering more than 70% of its energy supplied...
• -delivering dry air...
• -using environment friendly refrigerant R404a with zero -
• Ozone Depletion Potential...
• -draining clean condensate water...
• -operating at extremely low noise level (67-69 dBA)...
• -integrating a full range of optional equipment…
• ...doesn’t need a dedicated compressor room anymore!
