Amphenol Kaye CTR-40, User Manual, Page: 60 / 84

49
8 Controller Operation
Caution : The refrigeration may be damaged or the lifetime shortened if
used above 60°C for more than one hour.
The parameter is indicated by,
Cooling mode parameter
Press “SET” to access the parameter setting.
Cooling mode set for automatic
To change to On or Off mode, press “DOWN” until the desired mode appears
and then press “SET”.
Cooling mode set to on
Cooling mode set to off
Individual steps may be skipped by pressing “EXIT”
8.13.3 Hot Gas Bypass Mode
The hot gas bypass (HGb) system is a method of reducing cooling or refrigera-
tion capacity. It is normally used above approximately 0°C. Reducing cooling
capacity helps improve temperature stability in the bath and reduces energy
consumption. The HGb system is normally in the automatic mode which
switches on (reducing capacity) when at set-points above 0°C. When the bath is
scanning to lower temperatures (greater than 2°C below the starting tempera-
ture) the HGb turns off for full cooling capacity for all temperatures below the
maximum refrigeration limit even above 0°C.
There are three HGb modes; Auto, On, or Off. Normally HGb mode is set to
Auto mode. If for some reason the automatic mode is undesirable, the HGb
mode can be set to always On or Off.
The parameter is indicated by,
HGb mode parameter
Press “SET” to access the parameter setting.
HGb mode set for automatic
To change to On or Off mode, press “DOWN” until the desired mode appears
and then press “SET”.
CooL
C=Auto
C=On
C=Off
Hgb
Hgb=Auto