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TROUBLE SHOOTING
ACCUMULATOR TANKS
PROBLEM
Pressurised water pump cuts
in & out rapidly when outlet
is partially open
Schrader valve leaks water
EXPANSION TANKS
PROBLEM
Calorifier pressure relief
valve opens when calorifier is
heated normally
Hot water appears in cold
water line
Schrader valve leaks
POSSIBLE CAUSE
Pressure in accumulator tank
incorrect
Accumulator tank membrane
split
Accumulator tank incorrectly
located
Accumulator tank membrane
split
POSSIBLE CAUSE
Pressure in expansion tank
incorrect
Expansion tank not large
enough
Non-return valve in inlet line
to calorifier absent or
ineffective
Expansion tank membrane
split
Xylem Water Solutions UK Ltd
Bingley Road • Hoddesdon • Hertfordshire • EN11 0BU • UK
Telephone: +44 (0)1462 480380 Fax: +44 (0)1462 482422
mail@cleghorn.co.uk
REMEDY
Check tank pressure and
adjust (see instructions)
Replace tank or membrane
Re-locate tank (see
instructions)
Replace tank or membrane
REMEDY
Check tank pressure and
adjust (see instructions)
Fit larger tank
Check presence/condition of
non-return valve
Replace tank or membrane
www.jabscoshop.com
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