Service manual

MDS E-SCAN SERVICE

8.6 Caution

CAUTION

When removing the sensing head from an operating line, do not assume that the

line is empty or that the isolation or bypass means is working properly. If an

EMC isolation valve is used, be sure its travel is not limited by any external

attachments or other interference and the valve is closed tightly. No pressure should

be felt on the head as the mounting nut is being removed.

ANY PRESSURE FELT WHEN THE NUT IS LOOSENED MUST BE INVESTIGATED

BEFORE PROCEEDING. Steam should be turned off before attempting to remove

head.

Use a face shield and protective clothing. Stand to the side when removing the

sensing head.

Clean all black liquor residue from spud-piece on adapter prior to re-insertion of

sensing head. The o-ring seal should be replaced before re-installation.

CAUTION

Close off isolation valve or remove the sensing head and replace with

maintenance plug prior to steam cleaning process lines to prevent prism

breakage.