KRAL OMG 13 - Possible Faults; Troubleshooting

44 OIO 14en Edition 07/2017 Operating Instructions
Possible faults
Troubleshooting
Troubleshooting
Faults can have different causes. The following tables list the symptoms of a fault, the possible causes
and measures for elimination.
Possible faults
Troubleshooting
Fault Cause/Elimination
□ Flowmeter leaks 1, 2, 8
□ No flow rate 3, 9, 10, 22, 24, 25
□ Negative flow rate 5, 17, 19
□ Flowmeter does not generate a pulse 3, 4, 5, 6, 7, 8, 10, 13, 20, 22, 24, 25
□ Pressure loss too high 11, 14, 22, 23
□ Measured values not realistic 3, 4, 5, 6, 7, 9, 12, 15, 16, 17, 18, 19, 20, 21, 22, 23
No. Cause Remedy
1 Seal preload too low ► Preload the screws.
2 Seal damaged ► Replace the seal.
► Check the chemical resistance of the seal.
3 Foreign bodies in the liquid and/or
flowmeter
► Dismantle the flowmeter and clean it.
► Use the commissioning filter.
4 Pick up not positioned correctly ► Position the pick up correctly, see "Connection for
the pick ups", page 30.
► Observe the pick up operating instructions.
5 Pick up not connected correctly ► Check the connection of the pick up, see
"Connection for the pick ups", page 30.
► Check the supply voltage for the pick up, while
observing the pick up operating instructions.
6 Pick up defective ► Check the function of the pick up, while observing
the pick up operating instructions.
7 Dry sleeve not adjusted correctly ► Set the dry sleeve correctly, while observing the pick
up operating instructions.
8 Dry sleeve destroyed ► Replace dry sleeve, please contact the manufacturer
for information.
9 Liquid lubricates too little ► Use the OMK series.
10 Feed pressure too low ► Increase the inlet pressure.
11 Viscosity of the liquid too high ► Increase the temperature, while observing the
permissible temperature range.
12 Viscosity of the liquid too low ► Use the OMK series.
13 Flow rate too low ► Increase the flow rate
- or -
► Use a suitable flowmeter size
- or -
► Use linearization, while observing the electronic
operating instructions.
14 Flow rate too high ► Reduce the flow rate
- or -
► Use a suitable flowmeter size.
15 Airlocks ► Deaerate the system and check for leaks.