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Old 13-10-2010, 01:22 PM   #1
oikh
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Default ehiem pro II problem

hi all, got a problem with the pro II, the water keep overflowing each time i open the valve. the water flow out from the side of the cannister rather than into the tank. can anyone help ?
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Old 13-10-2010, 01:26 PM   #2
sheng
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may be u need to change the O-ring (gasket)

Last edited by sheng; 13-10-2010 at 01:29 PM.
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Old 13-10-2010, 02:07 PM   #3
keygan
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Default check your impeller

bro, is the pump head cranking with noise? is the impeller working(spinning)? better put the pump head and try on a basin of water to check/test first, see if this remedy works
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Old 13-10-2010, 04:45 PM   #4
thegongone
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if leaking at the gap where the body and head meets, then is o ring
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Old 14-10-2010, 02:34 AM   #5
oikh
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care to elaborate how does the o ring work ? bcos i first time using ehiem
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Old 14-10-2010, 11:10 AM   #6
thegongone
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An O-ring, also known as a packing, or a toric joint, is a mechanical gasket in the shape of a torus; it is a loop of elastomer with a disc-shaped cross-section, designed to be seated in a groove and compressed during assembly between two or more parts, creating a seal at the interface.

Basically, it seals up the gap between the body and head, creating a waterproof seal.

More information on o-rings: http://en.wikipedia.org/wiki/O-ring


Most o-rings are made of natural/synthetic rubber, silicone or composites. Most do lose their elasticity over time. Hence, it is rather common that o-ring loses its sealing capability over time and you have to replace the o-rings.

You can find the o-ring being attached to the side of the head; just imagine putting a rubber band on the head, just that the colour of the band is black.

It looks like something on the first picture in the link: http://www.shop.trilbytropicals.com/...?categoryId=24

The Eheim filter manual suggests you to lubricate the o-rings. New replacement o-rings are pre-lubricated.
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Old 14-10-2010, 01:36 PM   #7
Navanod
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Quote:
Originally Posted by thegongone View Post
The Eheim filter manual suggests you to lubricate the o-rings. New replacement o-rings are pre-lubricated.
I would beg to differ bro. I bought replacement O-Rings for ehiem from C328 and had to buy an extra pack of aquarium-safe lub and apply it myself
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Old 14-10-2010, 03:34 PM   #8
thegongone
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maybe it was kept for too long? when i bought it, they all are slightly oily.
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Old 14-10-2010, 05:21 PM   #9
Navanod
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Thats possible too, seeing as to how dusty some of the stuff there are
LOL
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Old 14-10-2010, 11:58 PM   #10
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I bought mine from QH, cleaner but more expensive. The lub sometimes become dusty and appear dry, or sometimes it gets absorbed into the rubber or other times it just really dry up.
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