Technical Information
TROUBLE SHOOTING OF FRP MEMBRANE VESSEL

Trouble Shooting & Attentions During Installation



Attention to Installation
The FRP Housing uses  O -ring as a sealing mechanism.  Therefore, the distribution of internal
pressure exerted on the  O -ring directly affect the FRP housing sealing performance.  Thus,
during installation, the external connector of the sealing plate influencing the sealing ability.
Over tighten of connector will result in water leakage, which is difficult to identify the leakage
problem.

Leakage due to Inproper Operation
During installation or reassemble of the end plate, apply of lubricant on the  O -ring is
compulsory to prevent  O -ring damage or cracking.  This will results water leakage.  Thus,
replacement of new  O -ring is required.
Improper handling resulting surface damage such as scratch on the sealing portion, will
affects the sealing performance.  It is suggested to contact the manufacturer for advise.

Leakage due to Aging
After extend periods of usage,  O -ring will aged naturally.  It is suggested during replacement
of membrane, to inspect the  O -ring and replace those aged  O -rings.

Mechanical Damage of Housing Body
When the performance of housing reduced due to mechanical damage which results leakage,
it is advisable to replace the housing immediately.

Phenomenon of  Water Hammering
If the RO System does not fill with water before start-up, it will results high pressure water
flows through the first membrane and cause a sudden high pressure drop across the
membrane.  Or, start-up of the high pressure feed water pump with rapid opening of
the feed valve.  Then, water hammering would occurred.  This may cause the damage of
RO pressure vessel, or even the end plate fly off from the vessel and injuring plant personnel.
Also, it would damage the membrane and its components.

How to deal with minor scores on the surface of the vessel
During the product delivery, please pay attention to surface protection of the vessel with
proper packing and handling.  Should there is any minor scores, use #600 sand paper
to polish the scratch area with water.
After leveling of the scratch region, clean and dry it.  Then, apply by spray on same color
code paint on the repair area.  Upon drying, apply on a layer of gloss finish burnishing paste
and polish until it is shinning.  If the scoring area is too big, which is not possible to be repair
by the user, please contact the manufacturer and the telephone number : +6 03-8961 2166