JULABO FC600-T Recirculating cooler - Manual (Page 17)

Recirculating coolers
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4. Keys for actual values (LED 1)
A Key - Indication of feed temperature
B Key - Indication of return temperature
C Key - Indication of safety temperature
4.1 Key - Indication of actual temperature of external sensor
4.2 The "MENUE" key is not required for normal operating
4.3 The key "SPEC" is not required for this model version.
5. Keys for setpoint values (LED 2)
E Key - Indication or setting of working temperature
F Key - Indication or setting of high temperature
G Key - Indication or setting of low temperature
H Key - Indication or setting of control ratio for feed/return
flow temperature
J Key - Circulating pump On/Off
5.1 Key - "SPEC" - PID control parameters
5.2 Cursors left/right
5.3 Edit keys (increase/decrease setting)
5.4 Enter key (start, store)
6. Electrical connectors
O N K M L
O Programmer input and temperature recorder output
N Connector for external Pt100 sensor
K Interface RS 232
M Alarm output (for external alarm signal)
L Stand-by input conforming to NAMUR recommendations
(external emergency switch-off)