Honeywell MP953D

TROUBLESHOOTING
EQUIPMENT NEEDED
Troubleshooting procedures require Pressure Gage
14003519 (0 to 30 psi [O to 207 kPa]).
SYMPTOMS AND CORRECTIVE
ACTION
Figures 3 and 4 show troubleshooting flowcharts.
CHECK THAT ACTUATOR
IS SECURELY MOUNTED
AND
STEM EU-lTON IS
PROPERLY LATCHED
NO
f
PRESSURETO
A
DOES
RANGE VALUE
LOOSEN
POSiTlONER
SETPOINT COVER. SLOWLY
TURN COVER SCALE TO
BELOWZERO START POINT.
ADJUST POSITIONER
START POINT DIALTO
MINIMUM VALUE
I
RECAUBRATE
POSITIONER START
POINT IF NECESSARY
NO
Y
REMOVE ANY FOREIGN
MATERIAL;
AND/OR
REPAIR DISC, SEAT.
AND STEM; AND/OR
REPACK VALVE
Fig. 3. Troubleshooting Flowchart for MP953A, B, E, F (with Gradutrol Relay/Positioner).
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