Buderus 7738306430, Руководство по установке

Страница: 12 / 44

6720803833 12 2012/05
11. Troubleshooting
11.1. Filter combination
11.2.Reverse rinsing filter
Problem Cause Remedy
Water is escaping from the spring
bonnet Diaphragm in valve insert is faulty Replace valve insert
Too little or no water pressure Shutoff valves upstream or downstream
from filter not fully open Open the shutoff valves fully
Pressure reducing valve is not set to the
desired outlet pressure Set outlet pressure
Filter mesh dirty Reverse rinsing
Not fitted in flow direction Fit filter in flow direction (note direction of arrow
on housing)
The outlet pressure set does not
remain constant Filter mesh dirty Reverse rinsing
Valve insert, sealing ring or edge of
nozzle is contaminated or worn Replace valve insert
Rising pressure on outlet (e.g. in boiler) Check check valve, safety group etc.
Problem Cause Remedy
Too little or no water pressure Shutoff valves upstream or downstream
from filter not fully open Open the shutoff valves fully
Filter mesh dirty Reverse rinsing
Not fitted in flow direction Fit filter in flow direction
12. Spare Parts 13. Accessories
No. Description Dimension Part No.
1 Valve insert complete
3
/
4
" - 1
1
/
4
" 7738309056
2 Filter insert complete
Filter mesh 95/110 μ m
3
/
4
" - 1
1
/
4
" 7738309057
Filter mesh 50 μ m
3
/
4
" - 1
1
/
4
" 7738309058
Filter mesh 200 μ m
3
/
4
" - 1
1
/
4
" 7738309059
3 Clear filter bowl
complete
3
/
4
" - 1
1
/
4
" 7738309062
4 Pressure gauge
rear connection thread G1/4“
Range 0 - 16 bar 7738309060
5 Wrench for removing
filterbowl and spring
bonnet 7738309061
Z74S-AN Automatic reverse rinsing actuator
For automatic filter cleaning at presettable
intervals