Hansen MCV User Manual

28
R649c
SEPTEMBER 2018
PXVC-PT (PRESSURE TEMPERATURE)
SUPERHEAT/SUBCOOLING CONTROL
OVERVIEW
The PXVC-PT controller is used in applications where the
system temperatures are not less than -20°F (-28.9°C). It
is factory programmed to provide precise control of the
Hansen Motorized Control Valve for direct expansion
evaporators. The two inputs, pressure transducer and
temperature probe, are used to determine the amount
of Superheat or Subcooling in a controlled refrigeration
system. The PXVC-PT controls the Motorized Control Valve
to modulate the refrigerant flow necessary to maintain a
set for superheated gas leaving the evaporator.
1 2 3 4 5 6 (ALARMS)
1 2
20.6 °F
19.2 °F
DISPLAY
INDICATOR
OUTPUT ON %
SUPERHEAT/
SUBCOOLING
TEMPERATURE
SUPERHEAT/
SUBCOOL
SETPOINT
ACKNOWLEDGED
ALARM (S)
1 2 3 4 5 6 (ALARMS)
1 2
50.8 P
32.0 °F
DISPLAY
INDICATOR
SYSTEM
PRESSURE
(PSIA)
SYSTEM
OUTPUT ON %
TEMPERATURE (OR)
ACKNOWLEDGED
ALARM (S)
ACTIVE ALARM
DISPLAY AND KEYBOARD OPERATION
PXVC-DX, PXVC-T, PXVC-L, PXVC-P, PXVC-CI
PXVC-PT FUNCTION KEYS
• Center (POWER) Key: > 2 seconds to TURN OFF the controller; Remote Interlock must be disabled.
Parameter Setting: ENTER to select menu option and ACCEPT parameter change.
• UP Key: Increase SETPOINT. Parameter Setting: SCROLL menu options and parameters.
• Right (OPTIONS) Key: Acknowledge alarm conditions. Alarm message disabled for 15 seconds, priority 1-6.
Parameter Settings: Enter to select menu options, and ACCEPT parameter change.
• Left (ESC) Key: Toggle between screens 1 and 2. Parameter Setting: Escape, menu option, discard
parameter setting.
FIGURE 21
HANSEN CONTROLLERS

Hansen MCV Specifications

General

Brand	Hansen
Model	MCV
Category	Control Unit
Language	English