Graco Mark IV Fonctionnement, Réparation, Pièces page 37

TYPE OF PROBLEM
Sprayer does not run at all
Digital display shows E=05
Control board status light blinks
5 times repeatedly
311287E
WHAT TO CHECK
If check is OK, go to next check
Control is commanding motor to run
but motor shaft does not rotate.
Possibly locked rotor condition,
an open connection exists between
motor and control, there is a problem
with motor or control board, or
motor amp draw is excessive.
With prime valve open and pressure
relieved, start and stop motor
15 times using set point
potentiometer (pressure switch). If
motor restarts each time at no load,
motor is bad and must be replaced.
If motor will not restart every time,
board is at fault. Replace circuit
board.
Cleanup / Nettoyage / Limpieza
WHAT TO DO
When check is not OK, refer to this column
6. Perform Field Short Test: Test at large 4-pin motor
field connector. There should not be continuity from
pin 4, the ground wire, and any of the remaining
3 pins. If motor field connector tests positive,
replace control board.
7. Check Motor Thermal Switch: Unplug thermal
wires. Set meter to ohms. Meter should read the
proper resistance for each model (see table below).
-
ti13140a
Resistance Table:
Ironman 300E 8.2k ohms
695 0 ohms
795 2k ohms
1095 3.9k ohms
1595 6.2k ohms
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