Conair GB/ WSB User Manual page 12

DIAGNOSTICS - for the CHECK OUT PROCEDURE
If display fails to come on at all:
check for power at outlet.
Check the 1/2 amp fuse on panel front.
If first display says ( TWELVE ), this is NOT the correct manual for
this software.
Possible model numbers are: 140, 220, 240, 420, 440, 940, 1840.
If model number is not correct for you unit:
see the next page, SELECTING CORRECT MODEL.
If display stays at (
check for damage to load cells or load cell wires.
Load cell distorted upward may produce a display of ( 0.0).
If unit displays randomly drifting numbers:
check to see load cells are plugged in.
If display shows about (- 1250.0) or (
check that the weigh bin is in place resting on the load
cells.
If display is steady but not near zero:
Recalibration of load cells will most likely fix this.
is covered in next section.
If there is no response from the display when the bin is touched:
check that load cell plug screws are secure.
If response is not sensitive or does not return to its start point:
check for interference around weigh bin.
If pressing * does not display (PASSWORD):
you are not in the normal power-up mode or the keypad
doesn't work.
the letter M or P at the left of the display.
If display says INVALID after entering the password number:
you pressed the wrong keys or the password number has been
changed and it is no longer 22222. Call us for help.
If an air solenoid does not operate:
check the 1/2 amp fuse.
check solenoid cable connected properly and fully seated.
check mix chamber door closed, safety interlock engaged.
If a slide or dump valve does not open:
check that the air supply is connected.
check for proper air line connections to cylinder.
If color or additive auger motor does not run:
check the 3 amp fuse.
check that the motor is plugged into proper outlet.
check for faulty motor by plugging it into a known source of
110 volt A.C. power.
Obtain a TWELVE software manual.
0.0):
This number is about the weight of the weigh bin.
Normal mode is indicated by the ABSENCE of
Page 13
-4500) for 900 series:
This