Igema NA7-130, Инструкция по установке и эксплуатации

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13
6. Construction
NA7 Legend
(1)
(2)
(2.1)
(2.2)
(2.3)
(3)
(3.1)
(3.2)
(4)
(5)
(6)
(A)
(D)
(W)
Connection studs
Standpipe
Float
Sealing
Cover flange
Flap indicator
Bolt spring
Stop clamp
Magnetic switch (optional)
Contact bar with reed
contacts (optional)
(Primary element MRK-
…)
Plug
Drain valve (optional)
Upper shutoff valve
Lower shutoff valve
7. Assembly
Take care that connection of shutoff valves (W+D) is made with a
horizontally orientated spindle. The arrow on the valve indicates the flow
direction
“
→
’’ and must point towards the standpipe (2).
Check mating dimensions between instrument nozzle and boiler nozzle.
Make sure that there are no magnetic materials or magnetic field
generators in close proximity of the standpipe (within 100 mm).
7.1 Version with flange
•
Respect installation position!
•
Remove protection caps from connection flanges. Caps only serve as transport protection.
•
Ensure that sealing surfaces are clean and undamaged.
•
Use sealing material according to EN1514 and screws according to DIN2510 or DIN974
(material 1.7709).
•
Mount magnetic level gauge stress-free.
Caution