Lewmar 300 SVTAH, Installation Manual

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FLUSHING PROCEDURE GUIDELINES
Flushing of the hydraulic system prior to start up is the single most important
operation of the installation process. Failure to carry out sufficient system
flushing will inevitably lead to rapid wear of components, contamination of valves
and other hydraulic components which in turn may lead to product break down
and failure as well as performance loss.
A few hours spent flushing the system at the installation stage may mean
that many hours or days are not spent later trying to fix a contaminated or
damaged system.
Ideally the system should be flushed using a flushing rig specifically designed to
flush hydraulic systems at the highest pressure and flow as is conveniently
possible. If a flushing rig is not available then the system pump may be used
Prior to flushing
All rigid and flexible pipes, hoses and components should be supplied clean and
capped. The caps should not be removed until they are ready for assembly. If
pipes, hoses or components are not clean, they should be suitably cleaned and
blown through with clean, dry compressed air and capped until ready for use.
Care must be taken when assembling the pipes, hoses and components that no
contamination be allowed into the system.
Flushing Procedure
1 Fill the system with clean fluid through a filter, allow the oil to settle for
half and hour to allow bubbles to disperse. The filter should be of a
rating as specified on the filter component of hydraulic circuit drawing.
2 Before starting the pump ensure that it has been primed and that the
outlet pressure is low.
3 As the system is flushed the level in the reservoir will fall, filling should
continue until the level becomes stable.