SAMUEL JACKSON HO-7-1237, Руководство по обслуживанию

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PAGE 7 of 61 HO-7-1237 & HO-4-1234 OIL-FIRED HEATERS
© SAMUEL JACKSON, INCORPORATED 2003 ALL RIGHTS RESERVED
controller is communicating with another controller and is ignoring the arrow buttons.
This is the normal operating mode for the high limit controller. The HIGH LIMIT
CONTROLLER will automatically energize in the RSP mode regardless of whether the
controller was in SP or RSP mode before shutdown.
High temperature limit values of 350
0
F (177
0
C) are preset at the factory as normal
limits. Contact the factory for help in changing these limits if needed.
HOW DO I USE THE OPTIONAL AUTOMATIC MOISTURE CONTROL?
With our optional automatic moisture controls, the temperature on the PRIMARY TEMP
CONTROLLER is automatically adjusted based on incoming moisture content of the
cotton. We call this arrangement “Feed-Forward Control”.
To bypass the automatic moisture controls, press the SETPOINT SELECT button to
make the rectangle disappear on the PRIMARY TEMP CONTROLLER and use the
arrow buttons to set the desired temperature. The letters RSP (for remote setpoint)
preceding the setpoint temperature will be replaced with the letters SP when the
SETPOINT SELECT button is pressed. The high limit controller will still operate in this
mode.
Figure 4 shows the feed- forward control with a moisture sensor in the storage bin of a
feed control. The moisture control is adjusting the temperature of one heater that may be
part of either a Samuel Jackson drying system or tower drying system.
Figure 4 – Basic Feed-Forward Moisture Control
14-3567.4