![Forbes Marshall DN15-25 Скачать руководство пользователя страница 11](http://html1.mh-extra.com/html/forbes-marshall/dn15-25/dn15-25_installation-and-maintenance-manual_2316942011.webp)
7.
Maintenance Guidelines:
Before undertaking any maintenance on the product it must be isolated from both
supply line and return line and any pressure should be allowed to safely normalise to
atmosphere. The product should then be allowed to cool. With suitable isolation
repairs can be carried out with the product in the line. When re-assembling, make sure
that all joint faces are clean. Once completed open isolation valves slowly and check for
leaks.
7.1
Routine and preventive maintenance:
Please refer to the maintenance schedule mentioned in the table below to undertake
routine maintenance of the trap.
Sr.
No
Parameters to be checked
Frequency for checking and maintaining
Single orifice float trap
Immediately Daily Weekly Monthly Quarterly
Half
yearly
Annually
1
Test medium pressure SOFT31
(3.5 barg to 17.5 barg)
Y
2
Repair / Replace SOFT31 -
when testing shows leaks
Y
3
Clean strainers of SOFT31
Y
4
Clean internals of SOFT31
Y
5
Visual inspection for leakages
Y
6
Arresting any other leaks
Y
Figure 7: SLR setting for only SLR and SLR+TV configuration
SLR+TV Assembly:
Loosen the gland nut by one thread. Rotate the stem in anti-clockwise direction. This moves
the stem towards thermopod. Once the stem touches the thermopod ball, rotate it further
th
by 1/4 of a turn.
4.
Check for normal discharge pattern and leaks if any.
Note: The SLR unit should only be used to prevent 'steam locking' and therefore is
designed to pass a small amount of steam, it is not recommended that the SLR be
left in the fully open condition as this may lead to premature trap failure and more
frequent maintenance schedules.
1
2
9
Single Orifice Float Trap With SLR and/ or TV