Johnson Controls MR12DR230-1C Manual

I
ntroduction
Designed to facilitate installers work, this range
of electrical cabinet is intended for use in cold
rooms working at positive or negative
temperatures and powered either with single
phase or three phase power supply.
Based on specifically designed controllers, it
incorporates all control functions as required by
modern cold room units, such as compressor
control, defrost management, fan management,
alarm function and solenoid valve for "pump
down".
It also includes all the safety equipment needed
such as circuit breakers for the compressor and
for the controller.
Particular attention has been given to the
accessibility so that the installation time will be
reduced to a minimum. Space has been left
available for customisation.
! Power rating from :
0,37 to 1,5 kW in single phase
1,5 to 7,5 kW in three phases
! Standard DIN rail components
! Most wiring integrated on the controller
! Specifically designed controller to
manage Pump Down
! Accurate and interchangeable
IP 68 sensor
! IP 65 standard DIN polycarbonate cabinets
! Integrate circuit breaker for motor and
Controller
! In field extension
! Main Switch
© 2000 Johnson Controls, Inc.
Order No. P-CR-E
Electrical Control Cabinets
Including digital controller

Features and Benefits

Refrigeration Controls Catalogue
Catalogue Section
12 modules (front) and 36 modules (back)
Cover most of standard applications.
Easy maintenance and servicing.
Availability of components.
Increased quality and reduced space occupancy.
Better match application need.
Accurate control performance.
No re-calibration needed.
High mechanical resistance.
Installation in harsh environment.
No time lost defining appropriate protection
Possibility to field connect a condensing fan or a
door frame heater.
To power down the whole cabinet.
Increased safety protection.
9
Product Bulletin CR1
Issue 0101
models
Catalogue Section 9