Typical Problems - MAGUIRE Weigh Scale Blender 4088 Installation Operation & Maintenance

Typical Problems

These problems are based on phone calls that we have received from Weigh Scale Blender users.
The display does not read close to zero when power is turned on, bin empty (plus or
1.
minus 10 grams).
• The load cells are not plugged in.
• The weigh bin is not resting properly and freely in its platform or the platform is not
resting properly on the bolts that protrude from the load cell enclosures.
• The controller was never calibrated for these load cells. In this case it will most likely be
off by several hundred grams. See Calibrate Load Cells.
• The load cells are damaged. See Verifying Load Cell Function on page 95.
The VERY FIRST DISPENSE does NOT take place. After a few seconds the ALARM
2.
begins to flash.
•
The air supply is not connected or the pressure is set too low.
•
The Natural solenoid is not connected properly.
•
The 3 amp panel front fuse is blown.
The NATURAL dispense valve continues to dump repeatedly even though the weigh
3.
bin has filled to overflowing. The weight reading is still below target full weight.
•
The weigh bin is not free to move.
•
The load cells are jammed.
•
The load cells are damaged. See Verifying Load Cell Function on page 95.
The system operates but always needs MANY RETRIES to complete a dispense and
4.
never seems to "learn" the proper dispense rate.
•
Vibration is causing frequent "bailouts" causing large swings in rate adjustment.
Increase the BER parameter.
Occasionally, the system gets STUCK doing retries of a component but the retry time
5.
is so short that nothing gets dispensed.
•
The LAG TIME parameter is set for too short a time. See LA parameter.
•
A valve is sticking closed. Remove air pressure and check for free operation.
The weight display shows random, very high or low values.
6.
• The Load Cells are not plugged in and the readout is drifting.
• Damaged load cells.
Dispenses from a slide gate are not as consistent as they should be.
7.
• The slide gate is sticking slightly. With the hopper empty and air disconnected, move
the slide manually to see that it moves freely. If material does not flow easily a bridge
breaker may be required.
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