Rectification Of Defects; Standards And Legal Provisions; Maintenance Instructions - BWT E1 EHF 3/4-1 Instrucciones De Instalación Y De Servicio

10. Rectification of defects

Defect
Water pressure in network sharply
reduced; water pressure falls sharply
upon removal (by more than 35 % of
resting pressure)
Water pressure increases above the
set value
If the defect cannot be rectified with the aid of this information, the factory service centre must be contacted..

11. Standards and legal provisions

in the most recent version in each case
The filter was manufactured in compliance with
DIN EN 13443-1 "Mechanical filters and filter com-
binations in the drinking water installation".
The following must be heeded when installing and
operating the filter:
- DIN EN 806-5, Technical regulations for drinking
water installations
- DIN 1988-200, Technical regulations for drin-
king water installations
- Regulation on the quality of water for human
consumption (drinking water regulation)
- Act on Regulation of the Water Household
(WHG)
- Act for promoting closed substance cycle waste
management and ensuring environmentally com-
patible waste disposal (Closed Substance Cycle
and Waste Management)
- The relevant regulations for installation, operati-
on and maintenance

12. Maintenance instructions

Drinking water is a foodstuff.
Hygienic care in the execution of works should
therefore be self-evident.
In accordance with DIN EN 806-5, maintenance
must be performed by experts (installer or factory
service centre).
Replacement of wearing parts (only original spare
parts)
Seals
Pressure reducer element (12)
Manometer (6)
Cause
Filter element soiled
Replacement or wear of
sealing elements
Verification of initial pressure with zero flow and
high levels of water removal.
Replacement of pressure-reducing element (only E1
HWS)
Pressure reducer is located
under the cap (2). After
stopping the flow of water
loosen locking screw (10)
and turn rotary knob (11)
in an anticlockwise direc-
tion until latching. Screw
off spring cover (8) with a
ring wrench (wrench width
36). Remove pressure-redu-
cing element (12) and slide
ring (13).
Grease O-rings of the new
valve element with silico-
ne grease and insert the
valve element into the ca-
sing, heeding the correct
fit of the O rings. Insert
slide ring, screw in spring
cover and locking screw.
(tightening torque 35 - 40
N/m) Set pressure reducer
as described under Com-
missioning. Check all con-
nections for leakproofness
(visual inspection).
every 3 yrs
every 6 yrs
every 6 yrs
Rectification
Replace filter element/hygienic vault
Readjust back pressure (see Com-
missioning). If the pressure increases
further the valve element (12) must be
replaced (only E1 HWS)
EN
19