LubriMist
®
Model IVT
Oil Mist Generating System
Installation and Operating Manual
Page 165
of 256
HIGH MIST
PRESSURE
Oil Mist Header
Pressure is
above High
Alarm Setting
(30in H2O –
75mBar)
1. Confirm supply air ball valve for Auxiliary unit is closed. Main Unit and Auxiliary
Unit cannot be operated at the same time.
2. Check for plugged reclassifiers. Paraffin based oils can develop a wax buildup
through reclassifiers as the ambient temperature drops below freezing. Please
refer to oil manufacturers product data sheet for oil specifications.
3. Check the oil mist distribution header and branch lines for sags or low points that
can collect oil and obstruct the mist flow. Mist pipe blockages will result in a
surging mist pressure
4. Verify that the regulated air pressure has not been changed from the original
setting established at commissioning. When adjustments are made, the EVENT
LOG records the event. See the section titled
Event Log
under
LOCAL ALARMS,
INDICATORS AND READOUT
in the Installation and Operating Manual for
instruction on how to access the event log. If it is determined that the regulated
air pressure has been changed, and that the High Mist Pressure alarm is due the
change in regulated air pressure correct the setting. Decrease the regulated air
pressure to achieve 20in H2O oil mist pressure, ensuring not to decrease below
10PSI – .69Bar. If regulated pressure does not decrease with adjustments to air
regulator. The air regulator is defective and should be replaced (CFH-RS part no.
77700501).
Note:
Oil mist generating head will not produce oil mist with a regulated air
pressure below 10PSI - .69Bar
5. If adequate mist pressure cannot be achieved while maintaining the minimum
regulated air pressure, the system oil mist flow requirement is less than the
minimum operating capacity of the mist head. This situation occurs when the
mist system is reduced and equipment is removed from the system. If the oil mist
system has been downscaled, verify that the mist head vortex size is correct for
the service load. If the mist generating capacity is over capacity, the vortex
cartridge will need to be replaced to next smaller size. See table in IVT Operating
Instruction Manual section CONTROLLING THE MIST for part numbers, mist
head sizes and replacement instructions.
