Technical data

Ichill 200CX EVO rev 1.1 14/11/2013
Pag. 49 of 151
23. COMPRESSORS WITH DIFFERENT CAPACITY POWER
The function is enabled if:
• one circuit unit
• at least 2 compressor are configured
• the capacity of the compressors is not 0 and different for each one
Parameters involved:
CF67 Compressor 1 capacity 0 100%
CF68 Compressor 2 capacity 0 100%
CF69 Compressor 3 capacity 0 100%
CF70 Compressor 4 capacity 0 100%
CF73 Maximum number of start up of the compressor in 15 minutes
0= Not enabled
0 15
Example: circuit with 2 compressors:
• step 1: first compressor to be activated is the compressor with lower capacity
• step 2: the compressor is switched off and is activated the compressor with higher capacity
• step 3: both compressors are activated
The regulation is a steps; if two compressors with different weight are configured, 3 steps are available.
24. CIRCUIT MANAGEMENT: SATURATION OR BALANCING
In case of 2 circuits machine it is possible to decide how to balance the circuits:
• it is possible to switch on all compressors of the circuit before switch on a compressor of the
other circuit (saturation)
• it is possible to switch on first compressor of a circuit and then the first compressor of the
other circuit (balancing)
CIRCUIT SATURATION
CO15 = 0
If the machine has 2 compressors in the circuit 1 and 2 compressors in the circuit 2, the sequence of
activation is:
1
st
compressor circuit 1Æ 2
nd
compressor circuit 1 Æ 1
st
compressor circuit 2Æ 2
nd
compressor circuit 2
CIRCUIT BALANCING
CO15 = 1
If the machine has 2 compressors in the circuit 1 and 2 compressors in the circuit 2, the sequence of
activation is:
1
st
compressor circuit 1Æ 1
st
compressor circuit 2 Æ 2
nd
compressor circuit 2Æ 2
nd
compressor circuit 2
25. PUMP DOWN
PUMP DOWN with low pressure switch or pump down pressure switch
CO36 = 1 Pump down enabled during the switching off (low pressure switch or pump down switch)
Before turning off the last compressor, the solenoid valve is closed; the compressor works until the pressure
switch is activated or after a maximum time CO39; in this case an alarm is displayed (b1PH or b2PH) but the
machine continuous to work as normal condition.
If the alarm occurs more than AL21 times per hour, the Ichill generate a manual alarm.