GESTRA BA 46, Оригинальная инструкция по установке

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17

Turn the dial (2) on the nozzle needle (25) to the
desired position.

Place the stuffing box gland (8) on the nozzle
needle (25).

Hand-tighten the stuffing box screws (28).
 Unscrew the nozzle needle by a half turn.
The torque for the stuffing box screws varies
depending on the equipment:

For models with DN 15 to DN 32, the required
torque is 7 Nm.

For models with DN 40 and DN 50, the required
torque is 11 Nm.

Tighten the stuffing box screws to the specified
torque.
 Turn the nozzle needle to closed position with a
torque of 7 Nm.
 Place the control lever (1) on the nozzle needle.

Align the scale (9) on the dial (2) so that the "0"
mark is in the centre of the dial.

Screw the hex nut (30) onto the nozzle needle,
holding the control lever firmly.

Tighten the hex nut to a torque of 20 Nm.
Starting up the equipment
WARNING
Risk of burns from hot parts during
operation.
 Wear insulated and heat-resistant
protective gloves to operate the
control lever.
WARNING
Risk of being crushed by moving parts.
BAE type equipment is actuated and
controlled remotely. It can therefore open
or close without warning.
 Never reach into moving parts during
operation.

Actuate the equipment after the steam
generating unit or pressure vessel has powered
up, as described in the following section.
 Check whether fluid is escaping from the
stuffing box bush.

If it is, retighten the stuffing box as described on
page 27.
Determining the blowdown rate
Calculate the correct blowdown rate using a
formula and determine the necessary position of the
control lever using the flow diagrams below.
For BAE models, the blowdown rate can be
determined by measuring the conductivity of the
boiler blowdown. You can find further information
on this in the control system installation & operating
manual.