Sterlco Micro Series Water Temperature Control Unit - Manual (Page 28)

Page 28 MICRO Series Water Temperature Control Units
4-5 Using Graphic Panel Buttons
Figure 7
ON/OFF Switch
Push the ON/OFF rocker switch to the ON ( | )energize the unit and begin the
temperature control cycle. The switch will be illuminated whenever the unit is
on.
VENT Switch
Push the VENT switch for additional manual venting.
ALARM SILENCE Switch
Optional
Push the ALARM SILENCE button to silence the alarm. You should investigate
the alarm condition and restore the unit to normal operation before continuing
with the temperature control cycle.
AIR PURGE
Optional
Press the AIR PURGE switch to initiate the purge. It is a momentary switch and
must be pressed to keep the purge valve open. Releasing the switch closes the
cooling/vent and compressed air solenoid valves.
QUICK COOL Switch
Optional
Press the QUICK COOL switch to open the cooling valve and quickly cool the
process.
4-6 Alarms
Audible/Visual General Fault Alarm
Optional
The audible/visual general fault alarm sounds if any fault triggers, such as low
water pressure, over-temperature, or pump overload. A signal from any of the
safety devices activates a horn and flashing strobe.
ƒ Push the ALARM SILENCE switch to silence the alarm. The optional
mechanical high temperature safety alarm is interlocked with the heater. When
triggered, the heater cuts out and the pump continues to run.
4-7 Controller Factory Setup
The controller is set up and tested at the factory for optimum operation, and
doesn’t need to be adjusted. If the controller does not work properly, or you
suspect someone has accidentally changed some settings, you can do two things.
First, perform the Auto-Tune Procedure described in the following section. If that
doesn’t work, restore the controller to the original factory settings as described in
the appendix.