Clayton Steam Generator model EO-100-1
PAGE 63 / 70
Instruction Manual, doc.nr.: MAN18206 Rev A PSC
9.8
STEAM PRESSURE SWITCH (F20)
1
Range spindle
2
Range scale
3
Differential spindle
4
Differential scale
5
Lock srew
Valve Ball 3-way –T SS
( option)
The steam pressure switch can be adjusted to start and stop the burner at any desired maximum steam
pressure between 4,5 and 28 bar
(depending on execution)
. The switch will close and restart the burner
when steam pressure drops about 1 bar
(adjustable by means of the differential spindle)
below that point. To
adjust the setpoint of the switch, turn the range spindle on the switch housing until the dial points the desired
pressure. See fig 8.21
9.9
MODULATION PRESSURE SWITCH [F22]
The modulating pressure switch is normally adjusted to modulate burner to "low-fire" operation when steam
pressure reaches 1 bar below maximum and return the burner to high fire operation when steam pressure
drops about 0.8 bar below that point. This adjustment can be raised or lowered in relation to maximum
steam pressure, but should never be set lower than 0.3 bar below the steam pressure switch cut-out point. If
it is set to close to the maximum steam pressure, operation will be unstable and there will be a tendency to
"override" during abrupt drop in steam load. If set to low, steam pressure will not be maintained at high
level during heavy loads. The way of adjustment of the switch is identical to the one for the steam pressure
switch.
Fig.8.21 Land Installation
Fig.8.21 Marine application
Содержание EO-100-1M
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