Burkert 8745 MFC Ethernet, Operating Instructions Manual, Page: 61 / 70

61
Troubleshooting
Type 8745 Ethernet, 8745 Analogue
12.1.10 Product status indicator is yellow
(MFM Ethernet)
Identify the cause:
1. One of the following values is out of specification. The sensor
or the product can be damaged.
•
the fluid temperature
•
the product temperature
•
the supply voltage
→
Operate the product within the specifications. If the product
status indicator is still yellow, then send the product back to
Bürkert.
2. The Ethernet protocol is being changed.
→ Wait until the change of protocol is completed. This can take
up to 1 minute.
12.1.11 Product status indicator is yellow
(MFC Analogue)
Identify the cause:
1. One of the following values is out of specification. The sensor
or the product can be damaged.
•
the fluid temperature
•
the product temperature
•
the supply voltage
→ Operate the product within the specifications. If the product
status indicator is still yellow, then send the product back to
Bürkert.
2. The set-point position for the control valve has (almost)
reached 100%. The set-point value cannot be reached.
→ Increase the inlet pressure or decrease the back pressure.
→
If the pressure drop in the pipe is too high, reduce the
pressure drop.
→ If the filters that are installed in the pipe are dirty, clean the
filters.
12.1.12 Product status indicator is yellow
(MFC Ethernet)
Identify the cause:
1. One of the following values is out of specification. The sensor
or the product can be damaged.
•
the fluid temperature
•
the product temperature
•
the supply voltage
→ Operate the product within the specifications. If the product
status indicator is still yellow, then send the product back to
Bürkert.
2. The set-point position for the control valve has (almost)
reached 100%. The set-point value cannot be reached.
→
Increase the inlet pressure or decrease the back pressure.
→ If the pressure drop in the pipe is too high, reduce the
pressure drop.
→
If the filters that are installed in the pipe are dirty, clean the
filters.
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