GESTRA LRG 16-40, Оригинальная инструкция по установке

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16
Installation
Attention
n
The seating surfaces and threads on the vessel and mounting flange must be
accurately machined.
n
Use only the supplied ring joint
∅
33 x 39, form D, to DIN 7603, material: 2.4068,
bright-annealed!
n
Do not insulate the threads with hemp or PTFE tape!
n
Install electrode horizontally or with a vertical inclination. The measuring surface must
be permanently submerged.
n
The specified torques must be strictly observed.
n
Do not lag the electrode body.
LRG 16-40, LRG 17-40
n
Provide a spacing of approx.
30 mm
between the lower end of the measuring tube
and the boiler wall, the smoke tubes and any other metallic fittings as well as the low
water level.
n
Do
not
cut the measuring electrode and the measuring tube!
LRG 16-41
n
Provide a spacing of approx.
60 mm
between the lower end of the measuring tube
and the boiler wall, the smoke tubes and any other metallic fittings as well as the low
water level.
n
Do
not
cut the measuring electrodes!
n
Avoid subjecting the electrode to shocks.
Note
n
For the approval of the boiler standpipe the relevant local and national regulations must
be observed.
n
Three examples of installation are shown on pages 17 and 18.
Installation notes
Mounting conductivity electrode
1. Check seating surfaces of threads or mounting flange provided on vessel or boiler standpipe
(see
Fig. 2, 3, 4
). If necessary rework the surfaces according to the specifications indicated in the
drawing.
2. Place joint ring
A
onto the seating surface of the conductivity electrode.
3. Apply a light smear of silicone grease to the electrode thread.
4. Screw conductivity electrode into thread or flange provided on vessel or boiler standpipe and
tighten with an open-end spanner A. F. 41 mm. The torque required when cold is 150 Nm.