EHEIM 450 - Page 26

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. . . Primer does not work?
Cause Solution
Prefilter flap in prefilter Check the prefilter flap for pollution and, if required, clean it.
not closed. The prefilter flap must be unobstructed (see chapter 8.2, step 13).
Prefilter is filled with water. Empty prefilter, repeat priming. Priming only works with empty prefilter.
Check valve polluted/defective. Clean and, if required, replace the check valve (see chapter 8.3).
Cause Solution
No mains supply. Plug in to mains.
Shaft broken. Renew shaft (see list of spares).
Impeller missing or blocked by bits Fit impeller, clean pump chamber.
of gravel, shells or similar.
. . . Pump does not work?
. . . Filter performance has greatly deteriorated?
Cause Solution
Safety adapter lever position not correct. Check lever setting and adjust.
Safety adapter soiled. Remove safety adapter; open shut-off lever and clean openings
with EHEIM cleaning brush (no. 4005570).
Hose installation. Check that there are no kinks or marked narrowing of cross-section.
Hose installation soiled. Clean hose installation with EHEIM cleaning brush (no. 4005570).
Strainer blocked. Remove coarse dirt, clean strainer.
Filter media heavily soiled. Clean the filter masses thoroughly according to chapter 8.
Filter media filled into a net bag. Never put long-term filter media in net bags or nylon stockings. This
leads to a drastic reduction in pump performance within a short time.
Filter media not cleaned properly. When cleaning, remove the filter media from the filter media basket
and rinse through with lukewarm water (see III).
Filter media wrongly assembled. Check that filter media have been assembled correctly in the recom-
mended layers of filtering. Fill bottom filter insert to just under edge
with EHEIM MECH. Fill next filter inserts with EHEIM SUBSTRAT,
also to just under edge. Never place white filter pad under the handle.
Filter pad not renewed. Be sure to renew the filter pad each time you clean.
Pump is dirty. Clean pump chamber, cooling and lubrication channel with EHEIM
cleaning brush set (no. 4009560).
. . . Top of filter leaks?
Cause Solution
Closing clips not closed properly. Close all clips properly.
Sealing areas or gasket soiled. Clean seal areas and spray lightly with EHEIM silicone grease spray
(Order no. 4001000).
Sealing ring not fitted, Insert sealing ring correctly or renew.
inserted wrongly or damaged.