Airedale OptiChill FreeCool 500kW - 1365kW - Manual (Page 24)

OPTICHILL
™
Chillers
24
Chillers
Technical Manual : 6530166 V1.6.0 02_2013
Controls
MONITORING The microprocessor also monitors and displays the following measured parameters:

Supply Water Temperature

Return Water Temperature

Evaporator Differential Water Pressure (Optional)

Suction Pressure of each circuit

Liquid Pressure of each circuit

Suction Temperature at each circuit

Superheat for each circuit

Discharge temperature of each circuit
ALARM HANDLING The controller logs and allows viewing of the last 100 conditions recorded in descending
chronological order through the keypad display.
The following conditions will be detected, triggering a visual display:
Common for both circuits:

Low Supply Temperature

Emergency Stop

Water Flow
Individual for each circuit:
Individual alarms will isolate the affected circuit only.

Compressor Trip

Low Suction Pressure for each circuit

High Liquid Pressure for each circuit

Volt Free Contact Alarm Indication

Low Pressure Switch

Compressor Overload

High Compressor Discharge Temperature

Circuit 1 Isolator Status

Circuit 2 Isolator Status