Chapter 5.0 General Specifications
5.1 Construction
l Compressor - Semi-hermetic design
l Main Housing - Dimensionally-stabilized aluminum
l Covers - High-impact, UV stabilized, flame-resistant polymer (TGS series is identified by green cover)
l Shaft - High-strength alloy
l Impellers - High-strength aluminum
l Motor - Permanent magnet, synchronous, DC
l Bearings - Integrated, digitally-controlled, magnetic
l Compressor Control - Integrated, digital capacity control
l Enclosure - IP54 rating
5.2 Maximum Pressure
The maximum pressure that the compressor can operate is regulated directly by two control settings: (1) Alarm Limit
and (2) Fault Limit. It is also controlled by a Pressure Ratio alarm limit monitoring the ratio between the Discharge
and Suction Pressures.
Table 5-1 Discharge Pressure Alarm and Fault Settings
Model
Alarm Fault
kPa(g) PSIG kPa(g)2 PSIG3
TGS230ST* 1239 180 1299 188
TGS230MT* 1116 162 1176 171
TGS310 1240 180 1300 189
TGS490 1240 180 1300 189
TGS390 876 127 926 134
TGS520 876 127 926 134
TGH285 1510 218 1586 229
TTS300ST* 1190 173 1240 180
TTS300MT* 1190 173 1240 180
TTS350 1730 251 1800 261
TTS400 1190 173 1240 180
TTS700 1190 173 1240 180
TTH375 2016 292 2116 306
* In the TGS230/TTS300 compressors, the alarm and fault settings default to lower values of operation, which are
typically deemed appropriate for Water-Cooled conditions. These values allow for adjustment for compressors
placed in Air-Cooled applications, which can have the value increased up to 1730 kPa(g)/250 PSIG for the Alarm and
1800 kPa(g)/260 PSIG for the Fault.
5.3 Maximum Discharge Temperature
The maximum temperature that the compressor can operate is regulated directly by the Fault Limit.
The Maximum Discharge Temperature Limits are defined in Table 5-2 Discharge Temperature Fault Settings.
M-AP-001-EN Rev. S-9/8/2021 Page 41 of 136
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