Specifications

40
Accessing functions and subfunctions
OPERATION KEYPAD ENTRY DISPLAY RESPONSE
To access a function, press subfunction <1> <TEST> Circuit A Discrete Outputs
no. and function name key.
Display shows subfunction group Loader A1
Relay is OFF
To move to other elements, <↓> Loader A2
scroll up or down using arrow Relay is OFF
keys.
<↓> Hot Gas Bypass Valve A
Relay is OFF
<↓> Circuit A Oil Heater
Relay is OFF
<↓> A1 Mtr. Cooling Solenoid
Relay is OFF
<↓> A2 Mtr. Cooling Solenoid
Relay is OFF
<↓> Circuit A Oil Pump
Relay is OFF
<↓> Oil Solenoid A1
Relay is OFF
<↓> Oil Solenoid A2
Relay is OFF
When the last element in a <↓> Loader A1
subfunction has been displayed, Relay is OFF
the first element is repeated.
To move to next subfunction <TEST> Circuit B Discrete Outputs
It is not necessary to use
subfunction number. Press
function name key to Loader B1
advance display through all Relay is OFF
subfunctions within a
function and then back
to the first.
<TEST> Unit Discrete Outputs
<TEST> Valves and Motor Master
<TEST> Circuit A Discrete Outputs
To move to another function, <STAT> Alarms: XX
either depress function name Reset Alarms: 1 <ENTER>
key for desired function
(display shows the first
subfunction).
or
Access a specific <4> <STAT> CIR. A DISCRETE OUTPUTS
subfunction by using the
subfunction number and the
function name key.
GENERAL REMARK
Screw chiller PIC control software is capable of controlling
water-cooled and air-cooled units with dual independent
refrigerant circuits. Circuits are identified as circuits A and B.
These may be equipped with 1 or 2 compressors per circuit.
A1 and A2 compressors are dedicated for circuit A.
B1 and B2 compressors are dedicated for circuit B.
In Status and History functions, only the compressor
information for existing compressors will be displayed.