MAGUIRE WEIGH SCALE BLENDER Installation Operation & Maintenance page 25

B L E N D E R 
W E I G H S C A L E
Check Out Procedure Diagnostics
If display fails to come on at all:
Check for power at outlet.
Check the 1/2 amp panel front fuse.
If third display says TWELVE COMPONENT, then:
this is NOT the correct manual for this software. Obtain and use a 12 software manual.
Possible model numbers are:
WMB, 140, 140R, 220, 240, 240R, 420, 440, 440R, 940, 1840, WSB 3000
If model number is not correct for you unit:
see the next page, SELECTING CORRECT MODEL.
If display shows randomly drifting numbers:
check to see load cells are plugged in.
If display shows about (- 1250.0) or ( -4500):
check that the weigh bin is in place properly.
If display is steady but not near zero:
An over stressed load cell will display a permanently high or low reading. Recalibrate load
cells; next section.
If there is no response from the display when the bin is touched:
check for damaged wires to load cells.
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 ENTER PASSWORD:
you are not in the normal power-up mode or the keypad doesn't work. Normal mode is
indicated by the ABSENCE of MANUAL or PROGRAM at the lower right 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 the air supply and regulator adjustment:
(minimum 20 psi, 80 psi (5.5 bar) recommended).
check for proper air line connection to cylinder.
If an auger feeder motor does not run:
check the 3 amp fuse.
check that the motor is plugged into the proper outlet.
check for faulty motor by plugging it into a known source of 110 volt A.C. power (240 volt
outside U.S.).
M A G U I R E P R O D U C T S , I N C .
25