Purge Screen; Figure 8 - Purge Screen - Johnson Controls YORK OPTIVIEW CONTROL CENTER Operation Manual

FORM 160.10-O1
ISSUE DATE: 4/27/2018

FIGURE 8 - PURGE SCREEN

OVERVIEW
This screen displays a cutaway view of the purge tank,
if the chiller is equipped with a York TurboGuard II
Purge System. LED's depict the state of the float
switches, oil valve solenoid and air valve solenoid and
the purge exhaust count is displayed. All setpoints relat-
ing to the purge system are maintained on this screen.
The purge tank oil level, based on the position of the
float switches, is depicted through animation. When
both the float switches are closed, the oil level is shown
at its lowest (empty) level. When both float switches
are open, the level is shown at its highest (full) level.
Levels between these extremes are shown at midpoint.
DISPLAY ONLY
Air Valve Solenoid (LED)
Illuminated only when the air valve solenoid is en-
ergized (open), venting non-condensibles from the
purge tank. For High Efficiency (pump assisted) purge
systems, the valve is energized above 90.0 PSIA and
de-energizes when the pressure decreases below 80.0
PSIA. For non pump-assisted purge systems, the valve
JOHNSON CONTROLS

PURGE SCREEN

is energized above 34.7 PSIA and de-energized when
the pressure decreases below 9.7 PSIA. Trane chillers
which use the TurboGuard II require the high efficien-
cy purge unit.
Top Float Switch (LED)
Illuminated when the Top Float Switch is closed, in-
dicating the purge tank oil level is less than full. The
LED is extinguished when the switch is open, indicat-
ing the level is at maximum (full).
Bottom Float Switch (LED)
Illuminated when the bottom float switch is closed, in-
dicating the purge tank oil level is at minimum (emp-
ty). The LED is not illuminated when switch is open,
indicating the oil level is above minimum.
Oil Valve Solenoid (LED)
Illuminated when the oil valve solenoid is energized,
filling the purge tank with oil. The LED is not illumi-
nated when the solenoid is de-energized, draining the
oil from the purge tank.
SECTION 2 - OPTIVIEW OPERATION
LD10008
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