MAGUIRE MPL Series, Installation Operation & Maintenance, Page: 17 / 23

M A G U I R E P R O D U C T S , I N C .
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M P L M L S e r i e s V e n t u r i L o a d e r s
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CONTROLS
MODEL MPL: has no control box. Loading is simply controlled by
uncovering the sensor.
MODELS MPL-A and MPL-AS:
1. SWITCHES:
LEFT switch is the LOADER control.
MIDDLE switch is the ALARM control.
RIGHT switch is the optional process SHUT-DOWN control. This "shut-down" function
requires an air operated mechanical shut-off device mounted to an adaptor frame
(as supplied standard with our concentrate feeders). When energized, this will
stop the flow of natural material to the process.
2. SWITCH POSITIONS:
UP for automatic operation.
MIDDLE position to prevent operation of the associated function.
DOWN position to force ON, or TEST the associated function.
3. PILOT LIGHTS:
UPPER LEFT and RIGHT indicate the associated function is ON.
LOWER LEFT indicates ALARM DELAY TIMER is running (blinking).
If the loader does not load within 2 minutes, the
ALARMS will be actuated.
LOWER MIDDLE indicates SHUT-DOWN DELAY TIMER is running (blinking).
MODELS ML-1, ML-2, etc:
1. SWITCHES:
Each venturi has an ON/OFF switch associated with it.
An integral pilot light lights when turned on.
2. ALARMS:
If an ALARM is provided, it is fully automatic. Models controlling
two or more venturies, the one ALARM activates for any single
venturi failure to load.