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3.3. Change
membranes every 12-18 months
The following recommendations regarding the maintenance frequency result from the
experience of our customers in using SECOH air pumps at ambient temperatures
between -10°C und +40°C and an air humidity of below 80%.
Type/Model
up to 150 mbar
max. working
pressure*
SLL-20
to
36 Months
EL-S-60N
EL-S-60
36 Months
to
EL-S-100
EL-S-120
to
24 Months
EL-S-150
EL-S-150W
to
36 Months
EL-S-250W
*) max. working pressure is added from
The maximum watercolumn above the aeration components (e.g. diffusers)
+ loss of pressure caused by the aeration components (generally 50-70 mbar)
+ loss of pressure caused by magnet-/non-return valve
+ loss of pressure caused by reduced diameter of the airpipe/-hose (inner
diameter smaller than 17mm/19mm) and/or caused by bends or elastic
deformation
All manuals and user guides at all-guides.com
3. Maintenance
of
filter
element,
up to 200 mbar
max. working
pressure*
24 Months
24 Months
12-18 Months
24 Months
33
valveboxes
and
up to 250 mbar
max. working
pressure*
-
12-18 Months
-
12-18 Months
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