Note On Pumping Capacity; Maintenance And Care - JBL CristalProfi e491 greenline Manual

6
Regulating water flow
The water flow can be regulated by the stopcock labelled OUT if required (grey elbow
connection). The further the lever is turned away from the "OPEN" mark, the less water is
pumped by the filter. Never use the lever opposite to regulate flow!
Important: Reducing capacity by more than half should be avoided for the following rea-
sons: running noise may increase, the service life of the rotor may be shortened and the
cooling required when the pump head is in operation is no longer reliably guaranteed.
Note on the pumping capacity
For optimum reliable performance, we strongly recommend the use of JBL original filter
media only.
As usual technically, the data given on the type plates and the packaging refer to maximum
IDLE RUNNING DATA of the pump, without hoses and filter media:
When operated in an aquarium, this data is reduced by varying degrees, depending on the
length of hose and the filter media used. An accumulation of dirt in the hoses and filter me-
dia will further reduce performance.
The following approximate capacities refer to a hose length of 1.5 m and operation with the
supplied filter media in a clean or new condition:
The filter media and hoses should be cleaned when these levels are reduced by about 50 %.

Maintenance and care

All JBL CristalProfi greenline external filters are supplied with a standard filling of filter me-
dia to provide clean and healthy aquarium water for "normal" operation. The filters provide
extremely good conditions for the development of colonies of cleansing bacteria which play
an essential role in the breakdown of pollutants. Mechanical pre-filtering ensures that these
bacteria can efficiently carry out their task undisturbed for as long as possible.
CP e401: 450 l/h
CP e701: 700 l/h
CP e901: 900 l/h
CP e1501: 1400 l/h
CP e1901: 1900 l/h
CP e401: 200 – 250 l/h
CP e701: 350 – 400 l/h
CP e901: 380 – 450 l/h
CP e1501: 800 – 900 l/h
CP e1901: 1100 – 1200 l/h
DE
UK
FR
NL
IT
DK
ES
PT
HU
SE
CZ
PL
RU
23