KROHNE DK 46-47-48-800 EN - Manual (Page 23)

SERVICE
6
23
DK46 - DK800
www.krohne.com 05/2011 - 4000302403 MA DK46-800-R03-en
6.2 Changing the measuring cone
• Close the valves located upstream and downstream of the device.
• Close needle valve
• Push protective cover upwards and remove towards the front
• Turn tensioning screw 1 counter-clockwise to loosen
Devices with a top and bottom fitting made of PVDF (DK.../PV) have a tensioning screw in the
device head (6mm Allen key). This can be loosened with approx. 1 full turn.
The measuring glass can be removed to the front.
• Install in the reverse order
• Tighten tensioning screw 1 by hand
• Use a 3mm pin to tighten tensioning screw 4 or max. 5 times in 120° increments 2 in a
clockwise direction.
Test the leak tightness by suitable means prior to start up.
Figure 6-1: Maintenance
CAUTION!
Residual liquid or gas may leak out!
CAUTION!
To avoid breakage, the measuring glass must be positioned centrically between the gaskets.
MA_DK46_800_R03_en_302403_PRT.book Page 23 Thursday, May 19, 2011 8:26 AM