Specifications

Catalog WSC/WDC-4 17
Alarm History for Easy Troubleshooting
The MicroTech II controller's memory retains a record of faults and a time/date stamp. The
controller's memory (no batteries required) can retain and display the cause of the current fault and
the last twenty-five fault conditions. This method for retaining the fault is extremely useful for
troubleshooting and maintaining an accurate record of unit performance and history.
The MicroTech II controller features a three-level password security system to provide protection
against unauthorized use.
Figure 5, MicroTech II Controller Home Screen
The Home Screen shown above is the primary viewing screen. It gives real time data on unit
status, water temperatures, chilled water setpoint and motor amp draw. This display answers the
vital question-is the chiller doing what it is supposed to be doing?
If an alarm occurs, a red button
appears on the screen (a remote
signal is also available). Pressing
this button accesses the Active
Fault Screen that gives complete
fault information. The fault can be
quickly and easily cleared at this
point.
Changing Setpoints
Changing setpoints is easy with
the McQuay MicroTech II control.
For example, to change the chilled
water set point, press SET from
any screen, then press the WATER
button and this screen appears,
press button #1, Leaving Water
Temperature, and you are ready to
input a password and then a new value.