33
3. Maintenance
3.3.
Change of filter element, valveboxes and
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*
up to 200 mbar
max. working
pressure*
up to 250 mbar
max. working
pressure*
SLL-20
to
EL-S-60N
36 Months
24 Months
-
EL-S-60
to
EL-S-100
36 Months
24 Months
12-18 Months
EL-S-120
to
EL-S-150
24 Months
12-18 Months
-
EL-S-150W
to
EL-S-250W
36 Months
24 Months
12-18 Months
*) max. working pressure is added from
x
The
maximum watercolumn
above the aeration components (e.g. diffusers)
x
+ loss of pressure caused by the aeration components (generally 50-70 mbar)
x
+ loss of pressure caused by
magnet-/non-return valve
x
+ 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
Summary of Contents for SECOH EL Series
Page 3: ...1 Aufbau der Pumpe 3...
Page 27: ...27 1 Name of Parts Modell EL single...
Page 34: ...34 3 Maintenance...
Page 35: ...35 3 Maintenance...