FULTON RB Series Installation, Operation And Maintenance Manual page 26

OPERATION - 3
Sequence manual/auto switch (if fitted)
Used to select either manual or automatic sequence step control. In the manual position the
burner will operate under the direct control of the master pressure controller, mounted in the
steam header/distribution pipework. The boiler mounted high pressure and on/off pressure
switches are still functional.
1st Low Water Indicator
This lamp will be illuminated and an alarm sounded when the water level in the burner falls to
the 1st low water level. The burner will shut down and the alarm will continue to sound until the
water level is restored to a safe working level. The alarm will then cancel, the indicator lamp will
extinguish and the burner will automatically restart.
2nd Low Water Alarm/Reset Switch
Sounds an alarm during switch on, press to reset. If the level of water in the boiler falls below the
second pre-set limit during boiler operation, the 2nd Low Water Alarm/Reset Switch will illuminate,
the alarm will sound and the burner will shut down. The water level must be restored before the
alarm can be cancelled by pressing the switch.
High Water Indicator (if fitted)
This lamp will illuminate and an alarm sound when the water level reaches a pre-determined high
level. The feedwater pump will stop.
When the water level falls to the normal working level, the indicator lamp will extinguish, the alarm
cancel.
Burner Run Indicator
Indicates that the burner fan is operating.
High Steam Pressure Alarm/Reset Switch
This switch will Illuminate and an alarm sound when the high limit pressure switch is tripped.
The switch/alarm must be manually reset after the pressure has reduced to a safe level.
Before resetting this control, ascertain the reason for the alarm, and rectify.
Flame Failure Indicator. Indicates the burner combustion control relay, detects a flame failure
condition.
Night Set Back Switch (if fitted)
The 'Set Back Switch' needs to be set to the 'On' position at the end of the working shift. This
means the burner will only fire if the boiler pressure falls below a set stand-by pressure. This
therefore reduces start-up lead time at the beginning of the next shift, when the 'Set Back Switch'
should be set to the off position to enable the boiler to reach normal operating pressure.
Page 20
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WARNING
Fulton Ltd
RB-RBC-IOMM-2015-1