Fulton Vertical Electric (FT-N) Thermal Fluid (hot oil) Heater - Manual (Page 46)

Fulton Thermal Corp.*Electric Thermal Fluid Heaters Manual* Version 2010-0423
Page 46
Some plastics can be dissolved by thermal fluid.
Note
Do not use system circulating pump for system filling.
Note
A pump that has been used for water or a different thermal fluid should not be
used prior to extensive cleaning. Thermal fluid can be damaged by contact with
moisture or other fluids.
Warning
Pressurizing a drum to force fluid into the system is not recommended. The drum
can easily explode, creating a hazard to personnel and equipment.
d) Filling Procedure
1. Fill the system slowly, closing all opened bleed and drain valves as fluid
reaches them.
2. When the fluid reaches and flows from the expansion tank low level
manual test connection, begin slowing down the filling process.
3. Close the low level connection and continue to fill until the liquid level
switch closes. After fluid appears in the low level connection, only a small
amount of additional fluid should be required.
4. If fluid is observed coming from the expansion section high level manual
test connection, drain fluid from the tank until the level is between the
liquid level switch and the high level connection.
5. Filling is complete when the fluid has reached the lowest level in the
expansion tank required to actuate the liquid level switch. Check to see
that the liquid level switch operates freely. To confirm operation of the
Drain and Fill Connection