GESTRA TK 23, Оригинальная инструкция по установке

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26
Attention!
Equipment may leak if the gasket is
damaged.
 Replace all gaskets that you loosen
during your work.

Use only new gaskets of the same
type.

Put the new inner gasket (26) onto the top
adjustment screw (11).

Put the hexagon nut (25) onto the adjustment
screw.

Make sure that the adjustment screw cannot
rotate.
For this purpose you can for example push the tip
of a screwdriver into the slot of the adjustment
screw.
The torques required for tightening the hexagon nut
(25) and the cap nut (1) depend on the equipment
type.

TK 23 requires 20 Nm.

TK 24 requires 30 Nm.
 Fasten the hexagon nut with the specified
torque.
 Put the new outer gasket (26) onto the upper
adjustment screw.
 Screw the cap nut (1) onto the upper adjustment
screw.
 Fasten the cap nut with the specified torque.

Insert the new gasket (27) into the bore of the
upper sealing plug.

Put the sealing plug (10) into the bore.
The torque for the sealing plug depends on the
equipment type.

TK 23 requires 20 Nm.

TK 24 requires 40 Nm.
 Fasten the sealing plug with the specified
torque.
Adjusting a minimum flowrate
To adjust a minimum flowrate (partial flow, "leak
passage") change the valve travel in the closing
direction.
The adjustors for setting the minimum flowrate are
located at the bottom of the equipment.
To ascertain the required number of turns of the
adjustment screw proceed as follows:
 Determine the ratio of the desired minimum
flowrate to the flowrate set at our factory.
 Refer to the lift restriction chart to ascertain the
number of turns of the adjustment screw that
corresponds to this ratio.
The capacity charts are shown in section
"Capacity
Charts " on page 56.
The lift restriction charts are shown in section "
Lift-
Restriction Charts
" from page 58 onwards.