Cylinder Discharge Temperature Shutdown Settings; Shut Down Setting Recommendations; Discharge Temperature Calculations; Cylinder Temperature Shutdown Setting/Formula - GE H301 Series Operating Manual

Cylinder Discharge Temperature Shutdown Settings

Shut Down Setting Recommendations

The discharge temperature shut down set point of each
cylinder must be set at 10%, but NEVER more than 25°F (14°C)
above the highest NORMAL daily discharge temperature of
Due to changing operating and ambient conditions, it is the
operator's responsibility to daily check, justify, confirm, and
adjust (as may be required) all safety shut down devices.
The maximum allowable operating temperature out of the
The discharge temperature (DT) setting shuts the compressor down due to rising
cylinder temperatures to prevent major damage.

Discharge Temperature Calculations

ST =
SP =
DP =
ATM =
N =
DT =
DTal =
DTsd =
Tabl e 1 5 Discharge temperature calculations

Cylinder Temperature Shutdown Setting/Formula

For proper cylinder protection, a compressor's high discharge gas temperature
alarm and shutdown settings should be the lesser of;
a. Alarm – set at 5% or 12°F (7°C), whichever is less, than normal operating
temperature.
b. Shutdown – set at 10% or 25°F (14°C), whichever is less, than normal
operating temperature.
A floating discharge temperature alarm (DTal) and shut down (DTsd) value (one
per cylinder) can be programmed into a compressor package's Programmable
that cylinder.
Complies with ANSI Z535, ISO 3864, OSHA 1910.145 (f) (9)
cylinders is 350°F. (177°C) on hydrocarbon gases.
Complies with ANSI Z535, ISO 3864, OSHA 1910.145 (f) (9)
Example 1
80°F
300 Psig
600 Psig
14.65 Psig
1.26
167°F
179°F
192°F
Example 2
100°F
300 Psig
600 Psig
14.65 Psig
1.26
191°F
203°F
216°F
H301/302 HSR Compressors | Rev. 2.2 | 55