Malfunctions - Mepu K-SERIES Operating Manual

8 Malfunctions

Below is a short description of some automation and troubleshooting related phenomena. Use the
list below to check the object of malfunction and possible actions. If the problem is not cured,
please contact the maintenance workshop or the manufacturer.
Problem
Emergency stop light NOT ON
The alarm light of the rotation
sensor is on
The overheat alarm light is on
The machine has stopped.
The screens of the digital drying
and burner thermostats are dark
The burner does not ignite (when
the dryer is running). The
burner alarm light is off.
Note! Ignition time, the pause
time of the work /pause time
relay.
35
Cause
 Any of the emergency stop
buttons is pressed down.
 The rotation sensor has
stopped the machinery.
 Clogging in the machine or
the bottom conveyor auger
is not rotating.
 Chain elevator wraps
loose.
 The dryer furnace
temperature is too high, the
overheat thermostat has
stopped the drying process.
 Possible burner thermostat
defect or incorrect burner
thermostat setting.
 Any of the motor
protection relays has
tripped.
 The glass tube fuse of the
control circuit is blown.
 The digital thermostat is
defective.
 The burner's power switch
is in position 0
 The burner thermostat
settings are incorrect
 The automatic fuse of the
burner has tripped
 The feeding apparatus's
fuses has tripped.
Remedy
 Release all the emergency stop buttons by
turning or pulling the button. Press the
emergency stop reset button so the light
will come on again.
 Check to find any clogging in the elevator
or the bottom conveyor, remove, if any is
found.
 Switch power off and on with the main
switch, restart the previous function.
 If the auger of the bottom conveyor is
broken, repair the auger.
 Check and tighten the belts of the chain
elevator as necessary.
 Check the overheat thermostat setting.
 Check the burner thermostat settings.
 If the settings are correct, call an
electrician and have the thermostats'
functions checked.
 Check whether the respective fan or
conveyor is clogged. Remove the
clogging.
 Is the grain bin too full, the spreader disc
has no room for rotating. Empty the dryer
of grain.
 Possible motor defect. The thermal relay
has tripped, the motor has broken down.
Replace the motor.
 Reset all the R buttons of the motor
protection.
 Check the condition of the glass tube fuse,
if necessary replace with a new one.
 If the defect is not cured even though the
fuse is replaced, call an electrician and
have the defective digital thermostat
replaced.
 Check the burner's power switch
 Check the burner's automatic fuse
 Check the burner thermostat settings
 Check the drying thermostat settings
 Check the feeding apparatus's motor
protection
D00125-2019_EN