7.6 Replacing the fuse
Warning!
Danger from electric shock! Switch off the power supply before unscrewing the cover
of the terminal compartment from the transmitter housing.
The instrument fuse can be found in the terminal compartment → see page 23, 24
Exclusively use the following types of fuses:
• Power supply 20...55 V AC / 16...62 V DC → 2.5 A slow-blow / 250 V; 5.2 × 20 mm
• Power supply 85...260 V AC → 1 A slow-blow / 250 V; 5.2 × 20 mm
7.7 Repairs
Please carry out the following procedure before returning the Promag 33 for repair
to Endress+Hauser:
• A note must always be enclosed with the instrument, giving the following
information:
– Brief description of the error
– Description of the application
– Chemical and physical properties of the fluid
• Remove all residue which may be present. Pay special attention to the gasket
grooves and crevices where fluid may be present. This is especially important if
the fluid is dangerous to health, e.g. corrosive, carcinogenic, radioactive, etc.
Warning!
We must request you not to return a unit if it is not completely certain that harmful
substances can be removed e.g. cracks have been penetrated or substances have
diffused through plastics.
Incomplete cleaning of the instrument may result in waste disposal or cause harm to
personnel (burns, etc.). Any costs arising from this will be charged to the operator of
the instrument.
7.8 Spare parts
The electronics plug-in module of the Promag 33 can be ordered separately as a
spare part:
• Replacement → see page 96
• Order code → see page 89
7.9 Maintenance
No special maintenance is necessary for the Promag 33 measuring system.
Warning!
Warning!
Promag 33 7 Trouble-shooting, Maintenance and Repairs
Endress+Hauser 97
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