Gram EK Series - Failures and Solutions; No Display Troubleshooting; Unstable Weighing Value; Overload Display (- - OL- -)

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4. Failures and Solutions
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No display
● no power supply
● damaged AC/DC adaptor
● fuse broken
plug in power cord
● change fuse
● replace adaptor
● Broken again after
changing, be repaired
in the maintenance
dept.
Unstable weighing value
● bad work
environment
● something
unneccessary touched the
pan or the bottom of the
pan.
● unstable power
supply, beyond allowable
value
● unstable weighed
object (as it absorbed
moisture or moisture
evaporated)
● there are strong
magnetic and radiation
equipment around the
balance.
● improve the work
environment, keep
away from vibration
and airflow disturbance
● Take out the foreign
matter. Turn the pan
avoiding the touch.
● Connect an external AC
power regulator
It shows “- - oL- -”
● It
overloads.
● Loadcell problem
● Take off
the objects.
● Contact with the
distributor
Weighing value
● compare with the
calibrate weight value
● Make the calibration.
No Answer
● Loadcell problem
● Contact with the
distributor
● PCB problem
Power symbol flicker*
● Low battery voltage
● Recharge it, if still
now work, pls contact
with the distributor.