Cleaning; Turning The Display Circuit Board; Turning The Signal Converter Housing - KROHNE UFM 3030 K EEx Series Service Handbook

8.4

Cleaning

If cleaning with removed covers disconnect the instrument from mains power. Avoid
cleaning solvent entering or remaining inside the instrument.
•
To clean this instrument, use a soft cloth dampened in a solution of mild detergent and water.
•
Do not spray cleaner direct onto the instrument when covers are removed.
•
Do not use high pressure water spray for cleaning
•
Do not use chemicals containing petrol, benzene, toluene, xylene, acetone or similar solvents.
•
Do not use abrasive cleaners on any part of the instrument.
8.5

Turning the display circuit board

To ensure horizontal positioning of the display irrespective of the position of the compact flow meter
the display circuit board can be turned through ± 90º or 180º.
•
Switch off power supply!
•
Unscrew cover from electronics compartment using the special wrench.
•
Remove 2 screws from the display circuit board.
•
Turn circuit board into desired position.
•
Replace screws, if necessary transposed, in the circuit board (do not kink or squeeze the ribbon
cable).
•
Grease screw thread before replacing housing cover.
8.6

Turning the signal converter housing

To facilitate access to connecting, indicating and operating elements on the compact flow meters
installed in locations that are hard to reach, the signal converter housing can be turned through ±
90º except for hazardous-duty version like EEx, FM, CSA, etc.
Any damage resulting from failure to follow these instructions carefully will not be covered by our
warranty!
The connection wires between the flow sensor and signal converter housing are extremely short and
can break easily.
Switch off power source!
•
Clamp the flow meter firmly by the flow sensor housing.
•
Secure converter housing against slipping and tilting.
•
Remove the 4 hexagon socket screws connecting the two housings.
•
Carefully turn the converter housing clockwise or anti-clockwise a maximum of 90°, but do not lift
the housing. If the gasket should stick, do not attempt to lever it off.
•
To conform to the requirements of protection category IP 67 (equivalent to NEMA 6) keep
connecting faces clean and tighten the 4 hexagon socket screws uniformly at diametrically
opposed points.
•
To prevent corrosion, paint the gap between two parts.
44 UFM 3030