JGASUK-IOMM-2015-2
Fulton Ltd
Page 62
APPENDIX - D
1.2
WEEKLY TEST
IN ADDITION
1.2.1
1ST LOW WATER
WEEKLY IN ADDITION
With the burner firing:
1. Switch the Pump Interrupt switch to the Pump Interrupt position.
2. By evaporation lower the water level in the boiler until the 1st Low Water alarm sounds and the
Low Water indicator lamp illuminates, and the burner shuts down.
3. Switch the Pump Interrupt switch to the Pump On position.
4. The pump will start and restore the water level to the normal position and switch off.
5. After approximately 17 seconds from restoring the 1st Low Water level the Low Water alarm
will cancel, the Low Water lamp will extinguish, and the burner will restart.
1.2.2
2ND LOW WATER
WEEKLY IN ADDITION
With the burner firing:
1. Switch the Pump Interrupt switch to the Pump Interrupt position
2. By evaporation lower the water level in the boiler until the Low Water alarm sounds, the 2nd
Low Water Reset switch illuminates, and the burner shuts down.
3. Switch the Pump Interrupt switch to the Pump On position.
4. The pump will start and restore the water level to the normal position and switch off.
5. After approximately 17 seconds from restoring the 2nd Low Water level the 2nd Low Water
Relay can be reset.
6. To cancel the 2nd Low Water Level alarm and light, depress the 2nd Low Water Reset switch.
The burner will restart.
Note: These tests can be carried out consecutively,
however it is possible that if the boiler is under
load conditions the 2nd Low Water alarm will occur
immediately after the burner has shut down on 1st Low
Water, without the apparent loss of any more water.
The reason is the collapse of the steam bubbles at
the water level surface when the heat is removed.
The degree of collapse could be such that the water
level will disappear from the bottom of the sight glass
before the alarm sounds. Should this happen, the 2nd
Low Water Level alarm should be checked by lowering
the water level slowly by partially opening the main
blowdown valve.
Figure. 38 - Pump Interrupt Switch
Summary of Contents for J Series
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