Fulton Vertical Electric (FT-N) Thermal Fluid (hot oil) Heater - Manual (Page 65)

Fulton Thermal Corp.*Electric Thermal Fluid Heaters Manual* Version 2010-0423
Page 65
Semi-Annually
a) Review daily log sheets noting any deviations from the norm.
Annually
a) Clean all strainers in the thermal fluid system.
b) Take a one quart sample of thermal fluid and return to the thermal fluid manufacturer for
analysis.
c) Schedule to local Fulton representative or factory service technician to perform an annual
preventative maintenance.
3. Maintenance Procedures
Lubrication
a) Different motor manufacturers recommend various intervals for lubrication schedules.
Load variations will dictate the frequency and amount of lubrication required.
b) When developing your lubrication schedule, consider the thermal fluid pump and all
system pumps.
c) If you have a thermal fluid circulating pump with a packed seal, the condition of the pump
packing should be checked regularly. If fluid leakage increases, tighten the packing ¼
turn daily.
4. Safety Check Procedures
Liquid Level Switch
a) Manually turn liquid level switch cam counterclockwise. Micro-switch will open contacts
and control voltage will be lost. Release cam and micro-switch will make and control
voltage will be restored.
Differential Pressure Switch
a) With the circulating pump running, observe the difference in pressure between the heater
outlet gauge and the heater inlet gauge. Remove the top cover of the differential
pressure switch. Note the original setting of the switch and turn adjustment knob
clockwise until switch trips. The pointer on the switch should be within 2 psi of the
observed pressure difference. Reset switch to the original set point.