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Operating Instructions
8. Maintenance
Warning!
Switch the power supply off before performing any maintenance or repair work on the measuring
•
system. The transport pipe must not be operational when replacing the sensor.
Repair and maintenance work may only be carried out by electricians.
•
The system requires no maintenance.
•
9. Warranty
On condition that the operating conditions are maintained and no intervention has been made on the device and
the components of the system are not damaged or worn, the manufacturer provides a warranty of 1 year from the
date of delivery.
In the event of a defect during the warranty period, defective components will be replaced or repaired at SWR's
plant free of charge as considered appropriate. Replaced parts will become SWR's property. If the parts are
repaired or replaced at the customer's site at its request, the customer must pay the travel expenses for SWR's
service personnel.
SWR cannot accept any liability for damage not suffered by the goods themselves and in particular SWR cannot
accept liability for loss of profit or other financial damages suffered by the customer.
10. Troubleshooting
Warning!
•
The electrical installation may only be inspected by trained personnel.
Error
Measuring system does
not work.
POW LED does not light
up.
RUN LED does not light
up.
Measuring system does
not work.
POW LED does not light
up.
RUN LED does not light
up.
Measuring system
works.
POW LED does not light
up.
RUN LED flashes
quickly.
Measuring system
outputs incorrect values.
Switch output relay
chatters.
The warranty will be rendered void if you open the device.
Cause
Power supply interrupted.
Cable break.
Defective fuse.
Defective device.
Microprocessor does not
start.
No sensor communication.
Sensor connected incorrectly. Check connection cable.
Sensor defective.
Sensor not receiving 24 V
supply.
Excessive voltage drop in the
supply cable to the sensor.
Calibration incorrect.
Calibration shifted by
abrasion on the sensor head.
Hysteresis too low.
Action
Check the power supply.
Check the connection cables for a possible cable break.
Replace fuse.
Notify SWR and rectify the error as instructed on the telephone.
Switch the power supply off and on again.
Remove programming cable.
Sensor defective.
Cable break between sensor and measuring system.
Replace sensor.
Make sure the power supply is connected.
Check cable lengths.
Perform a recalibration.
Perform a recalibration.
Increase hysteresis. Check for fault caused by external consumer.
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