IM-P337- 6 9 EMM Issue 2
54
There are some basic checks that can be carried out during plant a shutdown.
Caution!
Before carr ying out any maintenance on the ILVA 20/MVT10 refer to the safety information
in Section 1.
8.1 Impulse hoses
Spirax Sarco recommend periodic cleaning of the impulse lines to prevent excessive build-up of sludge or
deposits.
8.1.1 Cleaning impulse hoses
It is recommended that the impulse lines are periodically cleaned to prevent the excessive build-up of
sludge or deposits.
1. Ensure that the steam flow through the ILVA is isolated and the line pressure has returned to atmospheric
pressure and the temperature cooled.
2. Close the isolation valves on the two way manifold and open the bleed valves on the MVT10 to allow
the condensate to drain. (Consider where the condensate is going to drain to. A container placed under
the bleed valves to catch the condensate may be advisable).
3. Loosen the hose lock nuts and unscrew the hoses from both manifolds.
4. The hoses can then be cleaned by blowing air through them from an airline and rodded with a dedicated
pipe cleaner/brush. Be careful not to damage the hose. Replace any damaged hoses (see spares).
5. Ensure that the MVT10 ports are clean and free of debris. Carefully remove debris if required, but do
not subject the DP cell to high pressure, temperatures above 60°C and be careful not to damage the
cell with cleaning utensils.
6. Refit the hoses and tighten the lock-nuts using good engineering practice.
7. Close the bleed valves on the MVT10.
8. To recommission, follow steps in Section 6.
8. Maintenance
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