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Section IV Temperature Controller
Start Up
Before starting the unit, check all electrical and plumbing connections and
make sure the work area has been properly filled with bath fluid.
To start the bath press the I/O circuit breaker on the side of the control box to
the I (power on) position. The pump will start and the controller will display the
temperature of the fluid in the reservoir
The controller's COOL and HEAT indicators show the status of the refrigeration
system and heater. The COOL indicator is lit when the refrigeration system is
removing heat from the cooling fluid. The HEAT indicator is lit when the heater
is on. The HEAT indicator flashes when the heater is pulsating. A balance
between COOL and HEAT controls the temperature.
NOTE: Below 50°C the refrigeration system is on unless the setpoint is more
than 2°C above the bath temperature. This allows for rapid heat up. Above
50°C the refrigeration system is off unless the setpoint is more than 2°C
below the bath temperature. This allows for rapid cool down.
Controller Keypad
& Display
The digital controller controls temperature using a PID (Proportional-Integral-
Derivative) algorithm. It is designed with self-diagnostic features and easy to
use operator interface.
NEXT ENTER
Use this key to scroll forward through the menus and also to accept and save
changes.
YES,
This dual purpose key is used to answer Yes to Y/N questions or to increment
numerical values upward for setting numeric values.
