To Next Page

To Previous Page

2.1.7 Notes

Note 1 Shutdown cannot be switched off until the problem has been solved.

Note 2

Shutdown can be switched off immediately (

/RESET key).

Note 3 Shutdown is switched off automatically.

Note 4 Safety limits can be entered in bar or °C/R.

Note 5 Shutdown monitoring active when digital output compressor starting signal

has been activated.

Note 6 Shutdown monitoring always active

Note 7 Shutdown monitoring delayed 300 sec. after compressor start.

For reciprocating compressors, the Oil temperature low delay after start is

adjustable. If the Oil temperature low delay is set to 0 (zero) seconds, the

oil temperature shutdown and alarm supervision will also be activated during

compressor standstill thus preventing the compressor from starting with too

low oil temperature.

Note 8 Shutdown monitoring delayed 180 sec. after compressor start.

Note 9a Shutdown monitoring delayed 45 sec. after compressor start.

Note 9b Shutdown monitoring delayed 45 sec. after compressor start.

Note 9c Shutdown monitoring delayed 15 sec. (the Start unload timer setting)

after compressor start.

Note 10 A 0.0 setting disables alarm/shutdown monitoring.

Note 11a 300 sec. delay, regardless of when limits are exceeded.

Note 11b 600 sec. delay, regardless of when limits are exceeded.

Note 12 The compressor must have been above 5% capacity.

When below 5% capacity alarm/shutdown monitoring is disabled.

Note 13 Shutdown monitoring delayed 15 sec. after compressor start.

Note 14 60 sec. delay, regardless of when limits are exceeded.

Note 15 HPO and HPC compressors only.

Note 16 Shutdown monitoring delayed 20 sec. after compressor start.

Note 17 For VMY Mk 2-2.5, calculate the following: (see Fig. 6) Oil pressure = Oil

pressure 3 (after oil filter) - Discharge pressure 2. For all other compressor

types (except SAB 80, see Note 20), calculate the following: Oil pressure =

Oil pressure 3 (after oil filter) - Suction pressure 1.

Alarms and shutdowns

Engineering manual - Unisab III 1.10

001930 en 2014.09

43/319

Johnson Controls SABROE Unisab III Control User Manual

Questions and Answers: