Teuco P013A Serie Gebrauchsanweisung Seite 43

CLEANING ThE SAND FILTER
The sand filter consists in a bed of micropearl quartz sand .
During operation, organic impurities suspended in the pool water are trapped by the sand
medium as the stream passes through the filter .
The design of the filter guarantees uniform distribution of the water passing through the sand bed,
preventing any tendency to form localized channels that would significantly reduce the filtering
capacity of the medium .
When a new system is started up for the first time, make
a note of the filter pressure gauge reading .
The sand in the filter is cleaned by BACKWASHING:
- when the pressure indicated by the gauge exceeds the
value first recorded (newly installed system) by 0 .5 bar
- whenever pressure
circumstances .
Set the control panel switch to the "STOp" position
every time the SELECTOR LEvER is shifted.
Failure to observe this general rule can result in
serious damage to the system and invalidate the
warranty.
- Position the selector valve on "BACKWASH" and run
the pump in "MAN" for 1 minute approximately .
Check the state of the water by inspecting through the
sight glass on the selector valve.
- Position the selector valve on "RINSE" and run the
pump in "MAN" for 30 seconds approximately .
This step serves to resettle the sand bed after
backwashing.
- Return the valve to the "FILTER" position and start the
pump in "MAN" .
Backwashing uses a considerable amount of water
from the overflow tank .
If the backwash procedure stops as a result of there
being insufficient water in the tank, wait a few minutes
for the system to make up the level (solenoid valve
opens automatically to allow water in).
After several years operation, the filtering action of
the sand may become less effective; if so, have the
sand renewed.
when this operation becomes necessary, contact an
authorized Teuco service centre.
reaches 1 .5 bar, in any
EN
43