8. SERVICE
8.1. Cleaning, Maintenance and Care
RISK OF ELECTRIC SHOCK!
ALWAYS DISCONNECT POWER BEFORE DISMOUNTING OR CLEANING THE TRANSMITTER AND THE SENSORS.
DO NOT USE ANY SHARP OR POINTED OBJECTS TO CLEAN THE SENSORS.
IF THE FLOW METER IS USED PROPERLY, NO SPECIAL MAINTENANCE IS REQUIRED IN NORMAL OPERATION.
NEVERTHELESS, CHECK TRANSMITTER, SENSORS, CABLES AND CONNECTIONS ON VISIBLE DIRT OR DEPOSITS AND
DAMAGES. REMOVE POSSIBLE COATINGS AND DEPOSITS VERY CAREFULLY WITH A DAMP CLOTH
AND MILD DETERGENT.
BIOLOGICAL HAZARD!
OBEY SAFETY REGULATIONS AND WEAR PERSONAL PROTECTIVE EQUIPMENT WHEN HANDLING A DEVICE THAT MAY
HAVE COME IN CONTACT WITH BIOLOGICAL HAZARDOUS MATERIAL FOR EXAMPLE, WASTEWATER. WASH AND
DECONTAMINATE THE INSTRUMENTS TRANSMITTER CASE, SENSORS, CABLES WITH DISINFECTANT SOAP AND RINSE
WITH WARM WATER BEFORE MAINTENANCE OR SHIPPING.
If the flow meter is used properly, no special maintenance is required in normal operation. The transmitter is designed to be
practically maintenance and wear-free. Nevertheless, check transmitter, sensors, cables and connections on visible dirt or
deposits and damages.
If necessary, the transmitter housing can be cleaned with a dry, dust- and lint-free cloth. In case of severe soiling, it can be
wiped with a damp cloth.
Possible coatings and deposits on the sensors can be removed very carefully with a damp cloth and mild detergent.
8.2. Troubleshooting
8.2.1. Error Codes
Error
code
Error message Description Error Handling
1 failure General system failure Contact manufacturer
2 velocity Failure velocity measurement Check sensor and wiring
4 w water Failure water level measurement with hydrostatic level sensor Check sensor and wiring
8 w air
Failure water level measurement with ultrasonic down-looking level
sensor
Check sensor and wiring
16 t water Failure water temperature measurement (external T sensor) Check sensor and wiring
32 t air Failure air temperature measurement (external T sensor) Check sensor and wiring
64 water level Failure water level measurement Check sensor and wiring
128
v sensor
communication
timeout
Failure communication /
connection to velocity sensor
Check sensor and wiring
Table 1: Error codes (depending on the configuration of the measuring system)
Service
Page 101 March 2021 HYB-UM-03155-EN-03
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