Product Manual AGR-3
AGR 070A through 100A
47
MicroTech continuously performs self-diagnostic checks and will automatically shutdown a
compressor, a refrigerant circuit, or the entire unit should a fault occur. The cause of the shutdown will
be retained in memory and can easily be displayed for operator review. The MicroTech controller will
also retain and display the time the fault occurred and the operating conditions that were present at the
time of the fault. In addition to alarm diagnostics, the controller also provides the operator with a
warning of pre-alarm conditions.
Remote Monitoring Software
MicroTech Monitor software may be used on the customers personal computer to communicate with the
MicroTech controller. The controller connects directly or remotely over phone lines with an optional
modem.
Remote Monitoring and Sequencing (RMS) Panel
A separate panel with keypad and 2-line by 16-character display to sequence up to three chillers and
chilled water pumps. Provides automatic lead-lag and can utilize MicroTech Monitor™ software.
Thermal Storage
Select the MicroTech and double chiller insulation options for ice storage applications. A field
supplied changeover signal will determine whether the chiller operates in normal or ice mode.
Alarm Bell
Field installed and wired to the control panel to provide remote indication of unit alarm condition.
Unit
Protective Base Guards
Optional factory installed vinyl-coated welded wire base guards provide all-around lower unit
protection on ground level installations. Coil guards are standard.
Copper Fin Condenser Coils
Copper fin condenser coils and coated coils are available as an option on all models.
Black Fin
Aluminum fin stock precoated with phenolic epoxy for corrosion protection, 1000 hour salt spray rated.
Aluminum or Copper Fins with Protective Coating
Coating is
Electro Fin
flexible dip and bake epoxy coating providing corrosion resistance to a wide
range of chemicals and salt water, 3000 hour salt spray rated.
Phase Loss/Voltage Protection
Phase loss with under/over voltage protection and multiple LED indication of fault type is available as a
factory or field installed option to guard against compressor motor burnout.
Vibration Isolators
Spring vibration isolators are available for field installation to reduce vibration transmission through the
unit base.
Double Chiller Barrel Insulation
Factory installed double insulation (1 ½ inch total) on evaporator barrel.
Hail/Wind Guard
Field installed sheet metal guards to protect the unit coils from hail damage and to provide more stable
operation at low ambient temperatures by decreasing discharge pressure instability from wind.