Amron 9000-ECS, Руководство пользователя

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MODEL 9000-ECS USER MANUAL
9000-ECS-UM REV 4.0
10
6. OPERATION
Turn the unit ON selecting either local or remote control. When operating in the local mode select
either heat or cool as required. If you wish to use the remote control, select the remote control
position on the power switch. Control of the system is then passed to remote switch. The system will
not start until either heat or cool is selected on the remote switch.
In the local mode of operation, turning on the power will start the circulating pump; the pump will run
regardless of the position of the Heat/Cool switch position. Heat or cooling is selected by moving the
Heat/Cool switch to the desired position. On the initial selection of cool there may be a slight delay
in the starting of the refrigeration compressor, 0-10 seconds. If the cooling is turned off and back on
there will be a delay of approximately 45 seconds before the compressor starts. This allows the
pressures within the compressor to bleed off, permitting easier starting and eliminates nuisance
blowing of fuses or circuit breakers.
Temperature control of the fluid is determined by system heat load and two internal limit controllers.
The system runs at maximum capacity, exchanging as much heat as possible. If the unit exceeds
the heat (heat/cooling) exchange requirement of the chamber, the unit will shut off the refrigeration
compressor or heater, upon reaching preset limits. The limit controller for cooling is factory set at
20
o
F (-3
o
C). The high temperature limit controller is factory set at 110
o
F (43
o
C). Upon reaching
the limit the system will continue circulating fluid through the chamber, when the temperature of the
fluid changes by approximately 5-10
o
the system will automatically start.
The limit controllers can be adjusted in the field by removing the covers and setting the temperature
control to the desired temperature.