LubriMist
®
Model IVT
Oil Mist Generating System
Installation and Operating Manual
Page 173
of 256
Temperature
reading of
thermocouple 2
is much higher
that
thermocouple 1
Heated Auxiliary
air temperature
has exceeded
High Cutout
Alarm Setting.
(150
°
F - 65
°
C)
1. Confirm that the Air Heater Set temperature (120
°
F - 49
°
C) is below high air cutoff
alarm setting (150
°
F - 65
°
C). See the IVT Installation and Operating Manual for
instructions on reading set point values.
2. The High Air Cutoff alarm is designed to act as a failsafe device for the Air Heater
Element. The temperature sensor that controls the high air cutoff alarm is separate
from the sensor used to control air temperature.
3. If temperature measurement #1 is low (90
°
F - 100
°
F), the sensor TE-4 that
controls air temperature is failing and should be replaced. CFH-RS part number
77700941.
4. To check the operation of the air heater solid state relay BU-SSR-1. Open the
electrical enclosure to auxiliary unit and observe the green LED located on the BU-
SSR-1 relay. The LED indicates the operating status of relay When the LED is ON
the air heater element is energized. When LED is OFF the air heater element is
de-energized. Confirm LED is OFF when air temperature at or above control set
point.
5. If the air temperature is above the control set point and the relay BU-SSR-1 is ON,
replace the relay. CFH-RS part number 77780152.
Optional Equipment
AIR PRE-HEATER
LOW AIR PRE-
HTR
TEMPERATURE
Heated Pre-
heater Air
Temperature is
below Low
Alarm Setting
(30
°
F - -1
°
C)
1. The IVT solid state controller will not permit the air pre-heater element to operate if
the regulated air pressure is below Low Alarm Setting (10PSI - .69BAR). To
observe the regulated air pressure reading, press the
Reg Air Pres
key. If the
regulated air pressure is less that 10 PSI / 0.69 BAR, increase the pressure above
the low alarm setting.
See Troubleshooting solutions for LOW REGULATED PRESSURE
.
2. Press key combination
Set – Set – Air Temp
to view temperature of Supply Air.
This temperature must be above -40
°
F for pre-heater to maintain set temperature.
3. Press the key combination
Set – Set – Pre Heater
to view the Pre-Heater
Temperature control setting. Confirm that the temperature is above Low Alarm
Setting (30
°
F - -1
°
C).
Determine if customer assigned values have been installed to replace the factory
values: To check the air pre-heater low alarm temperature setting, press the key
combination
Set
,
Pre Heater.
Press the
Enter
key two times to view low alarm
setting. Press
Clear
key to return to normal operating mode.
4. Check mist tank reservoir level. The oil level must be above low-level switch alarm
set point (approx. 1” above LOW mark on sight gauge).
Low level alarm is indicated by red light on the keypad adjacent to the Oil Supply
Level heading.
The IVT solid state controller will not permit the air pre-heater
element to energize if the mist tank reservoir level is below low alarm point.
5. Check the operation of the Air Pre-heater element (H-3) and solid state relay
(SSR-2). Open the AC electrical enclosure, and observe the green LED located
on the SSR-2. The LED indicates the operating status of relay. When the LED is
ON power is being applied to the air heater element. Confirm LED is lit while the
air temperature is below control set point.
6. If relay LED is ON and the Pre-heater air temperature is not increasing, check the
10A fuse at fuse block number #11 and replace if the fuse is open.. (CFH-RS part
no. 77780155). If the fuse is good and power is being supplied to the heater
element, check and replace the air heater element if needed.
