FULTON FT-0080C, Инструкция по установке, эксплуатации, обслуживанию и каталог запасных частей

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FT-C Vertical Electric Thermal Fluid Heater Manual 12 2013 ISSUE 1
Page 37
3
3.6.2
COLD CIRCULATION
1. Turn on the main power switches.
2. Check for proper fluid level in the expansion section of tank.
3. A centrifugal pump cannot be operated with the discharge valve closed without heating up
dangerously.
4. The pump should be started with the suction valve fully open and the discharge valve open a
slight amount.
5. Check pump rotation. Operating the pump in reverse rotation may cause extensive damage.
6. Turn the three position switch located on the front of the panel box door to “Pump”.
7. Jog the black pump motor starting button and observe the direction of rotation. Rotation should
be in the direction of the arrow shown on pump casing.
8. If the rotation direction is incorrect, turn the three position switch back to “Off” immediately.
Change the wiring connections and recheck.
9. Check for proper alignment. Realign, at temperature.
10. With the control switch set to “Pump” push and hold the pump start button, check all manual
resets on pressuretrols. The circulating pump will run, but the elements will not switch on.
11. If the pump stops when the button is released, check for proper flow in the system, and review
settings of high and low fluid pressure switches and differential pressure switch. Check liquid
level switch.
12. Check that all pressure gauge readings remain stable. Pressure exceeding 6.9 barg or identical
readings at inlet and outlet gauges indicate a closed valve.
13. If an extremely high vacuum (i.e. 0.5 barg or more) is indicated on the compound gauge, the
valve between the circulating pump and the combination tank may have been left closed. In this
case, little or no pressure will be indicated by other gauges.
14. Check all piping, connections, and users for leaks. Repair any leaks immediately.