Brooks Automation PFC-1100HC, Operation Manual

Page: 54 / 64

3. Operation PFC Operation Manual
Controls and Indicators, Continued
Table 20. PFC Controls and Indicators (see Figure 14 on page 51)
Control or Indicator Function
Compressor Pressure, Suction Displays the pressure on the suction port of the compressor
Compressor Pressure, Discharge Displays the pressure on the discharge port of the compressor
Temperature Display Dis ature of the thermocouple (TC) selected by the
Temperature Selector.
plays the temper
Temperature Selector Selects the thermocouple whose temperature is shown in the
Temperature Display.
Low Pressure LED
lly
shuts down if this setpoint is reached.
Illuminates if the pressure in the suction port of the compressor
decreases below 2 psig (14 kPa). The compressor automatica
High Pressure LED Illuminates if the pressure in the discharge port of the compressor
exceeds a setpoint. The setpoint
ing to the PFC model
(672, 1100, etc.). The compressor automatically shuts down if this
setpoint is reached.
varies accord
High Discharge Temper and unit operation, is determined by two thermal
emperature of the compressor discharge
275° F: this switch starts a 40-minute timer. If the t ure
above this setpoint after 40 minutes, the compressor is
ically shut down (the compressor may need to operate
above this temperature for short
after it has been off for 48 hours) and the LED illuminates.

300° F: this switch immediately shuts down the unit to protect
the com
overheating.
ature LED This LEDs state,
switches that sense the t
line:
emperat

remains
automat
periods, such as starting the unit
pressor from
High Liquid Temperature LED
t ature
the te
f operati
econds o
This LED
emper
is controlled by a thermal switch that senses the
of the refrigerant as it leaves the water-cooled heat
exchanger. The setpoint range of the thermal switch is 30.3-36.3°C,
on of
perat
f ope
LED illuminates.
or 35.0-41.0°

If
o
for
mp
the TC Limit Switch option.
erature exceeds the setpoint during the first 14 seconds
the
ure me after the first 14
ration, the unit is automatically shut down, and the
unit, nothing happens.
exceeds the setpoint anyti

If the tem
s
Continued next page
52 825160-00, revision B