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LED Indicators
EXT SENSOR - Amber
When this is lit the controller is using the external RTD probe to control the
fluid temperature and Display #1
EXTT XXXC
is shown. When it is not lit the
controller is using the internal RTD probe.
LOW FLOW
- Amber
This LED is lit whenever any flow drops below the flow setpoint. Also, when-
ever a low flow condition exists a signal is sent to the tool through P1. The
low flow condition status and LOW FLOW LED is turned off automatically
when the low flow condition returns to above the setpoint, or when the flow is
disabled in the setup mode.
ADD FLUID - Amber
This LED is lit and an add fluid signal is sent to the tool whenever there is
approximately 3¾ gallons left in the tank. The ADD FLUID LED goes out and
the signal to the tool is automatically removed when the add fluid condition is
corrected.
NOTE:
When the ADD FLUID LED is on and the digital signal to the tool goes
high (open circuit), fill the unit using the procedures and cautions mentioned
in this manual or equipment damage or safety shut down of the heat ex-
changer could occur.
FILTER - Amber
This LED is lit when the particulate fluid filter has been in service for six
months. This signals the operator to change the filter. The LED goes out and
the filter timer is reset when the
RESET
key is depressed. NOTE: The
RESET
key will not reset the filter timer unless the FILTER LED is lit.
BREAKERS - Amber
This LED is lit whenever the pump circuit breaker or the heater circuit breaker
is tripped. An ERROR message
PUMP TRIP
or
HEAT TRIP
will also flash on
the display. The BEAKERS LED will go out and the error message will stop
flashing whenever the error condition is corrected.
A heat breaker trip condition will light the BREAKERS LED and flash the
HEAT TRIP
warning message. A heat breaker condition will clear itself
automatically when the condition is corrected.
A pump breaker trip condition will light the BREAKER LED, flash the
PUMP TRIP
warning message and turn off the HEAT ENABLE LED. The
BREAKER LED will go out, the
PUMP TRIP
warning message will stop and
the HEAT ENABLE LED will turn on when the pump breaker trip
condition is corrected.
HIGH TEMP - Amber
This LED is lit whenever a high temperature condition exists. When this
condition is detected the controller turns off the unit and illuminates the HIGH
TEMP LED. When the high temperature condition is corrected press the
heater high temperature reset switch to automatically restart the unit.
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