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NOTE: Detailed information on the operation of the MicroTech II control is contained in
the OM CentrifMicro II operating manual.
Figure 18, Unit Control Panel
ON/OFF
Switches
110-volt Circuit
Breaker
pLAN Termination
& Control Power
Isolation Board
Emergency
OFF Switch
Figure 19, Compressor Control Panel
115-volt Circuit Breaker
Terminal Board CTB1
Bias Block for Starter
Display Option Connection
115V-24V Transformers (3)
AC-DC Signal Converter
Guardistor Board
pLAN Connection
D-EIMWC00804-14EN
Transducer/Converter Board
5VDC Output, 0-5V Input
Centrifugal Chillers
UTB1 Unit
Terminal Block
Unit
Controller
Latch Relay
Heater Relay
Compressor Relay
Oil Pump Contactor
Oil Pump Overload
Relay Reset Button
Oil Pump Starting Capacitor
Terminal Board, CTB2
Compressor Microprocessor
RS485 Serial Card for
Starter Display Option
Connection
39
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