Fulton Hopkins (HPN) Horizontal Coil Thermal Fluid (hot oil) Heater - Manual (Page 37)

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SECTION 3
HPN-IOM-2014-0416
OPERATION
3-5
!
WARNING
All information in this manual is for
reference and guidance purposes,
and does not substitute for required
professional training, conduct,
and strict adherence to applicable
jurisdictional/professional codes and
regulations.
4
CAUTION
Operation of the circulating pump
for any amount of time without fi rst
bleeding will result in equipment
damage.
If fl uid temperature exceeds 150 F
during start-up and no fl ow has been
established, discontinue start-up and
contact Fulton Service Department.
Failure to do so may cause equipment
damage.
 Pump With Mechanical/Air Cooled Seal
Adhere to the following:
1. Open the air bleed connection located directly over the pump shaft.
Replace plug when a steady stream of thermal fl uid, free of entrained air,
fl ows from the port.
2. If fl ow has not started after two to fi ve minutes, remove the coupling
guard and rotate the pump shaft by hand in the proper direction. This
should help move the cold viscous fl uid through close tolerance seal areas.
Replace plug when fl ow is steady.
3. If this fails to induce fl ow, introduce fl uid through the bleed port and rotate
the shaft by hand to work the fl uid around the seal area. Continue to add
fl uid and rotate the shaft until no more fl uid can be added.
4. Replace the plug and run pump for fi ve to ten seconds. Stop the pump,
remove the plug and wait for fl ow to start. If after two minutes fl ow has
not started, add more fl uid as described above and run the pump for fi ve
minutes.
5. Constantly check the bearing area (located immediately behind the casing)
for overheating. Remove the plug and check for fl ow.
6. If fl ow has not started at this point, the fl uid may be too viscous to move
through the seal area. Start the system normally by selecting heat on the
control panel, and raise the temperature 50°F. Continue to raise the system
temperature by 50°F increments. Keep checking the pump until fl ow starts.
NOTE:  If at 150°F there is no fl uid fl ow, discontinue Start-up procedures and
contact the Fulton Service department immediately.
7. The pump should not be subjected to thermal or pressure shock. The thermal
fl uid should, therefore, be allowed to fl ow into the casing slowly.
8. Check fi eld work and make sure that all connections have been made in the
proper places. Check electrical connections to the motor.
9. Rotate the pump shaft by hand to be sure there is no binding or rubbing
within the pump or driver. Correct any problems immediately.
10. Check to see that pump is properly aligned while cold. The pump is properly
aligned before it leaves the factory. Because the system expands in operation,
the pump must be realigned when the system is at operating temperature.
11. Carefully check the coupling alignment of the pump and driver for angular
and axial alignment. Check pump manufacturers instructions for these
specifi cations. The use of a dial indicator to check the axial and angular
alignment is recommended.
12. Realign at operating temperature, if necessary.
13. Make sure that the pump is properly greased or oiled.