BWT E1 HWS - Maintenance Instructions; Rectification of Defects; Standards and Legal Provisions

19
EN
11. Standards and legal provisions
in the most recent version in each case
The lter was manufactured in compliance with
DIN EN 13443-1 “Mechanical lters and lter com-
binations in the drinking water installation”.
The following must be heeded when installing and
operating the lter:
- DIN EN 806, 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 every 3 yrs
Pressure reducer element (12) every 6 yrs
Manometer (6) every 6 yrs
Verication of initial pressure with zero ow and
high levels of water removal.
Replacement of pressure-reducing element (only E1
HWS)
Pressure reducer is located
under the cap (2). After stop-
ping the ow of water loo-
sen locking screw (10) and
turn rotary knob (11) in an
anticlockwise direction until
latching. Screw off spring
cover (8) with a ring wrench
(wrench width 36). Remove
pressure-reducing element
(12) and slide ring (13).
Grease O-rings of the new
valve element with silicone
grease and insert the valve
element into the casing, hee-
ding the correct t 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
Commissioning. Check all
connections for leakproof-
ness (visual inspection).
Warning: Any guarantee /
warranty is void if the hygi-
ene safe is damaged, e.g.
mechanically (hygienic vault
falls on the oor) or thermal (stored under -25 °C /
over 40 °C temperature or is constantly exposed to
intense sunlight). Do not wash the lter element and
hygienic vault in the dishwasher! It must be used
only factory-new hygienic vaults, BWT replaced da-
maged parts free of charge: www.bwt-group.com.
Defect Cause Rectication
Water pressure in network sharply
reduced; water pressure falls sharply
upon removal (by more than 35 % of
resting pressure)
Filter element soiled Replace lter element/hygienic vault
Water pressure increases above the
set value
Replacement or wear of
sealing elements
Readjust back pressure (see Com-
missioning). If the pressure increases
further the valve element (12) must be
replaced (only E1 HWS)
If the defect cannot be rectied with the aid of this information, the factory service centre must be contacted..
10. Rectication of defects