GESTRA TK 23, Оригинальная инструкция по установке

Страница: 10 / 64

10
Function (equipment with DN 65 - 100))
The membrane regulator capsules and the
upstream pressure of the condensate control the
discharge of condensate.
If undercooled or cold condensate, or air or other
incondensable gases are present, the membrane
regulator capsules are in the open position.
The pressure in the chamber (18) increases until it
reaches upstream pressure. As a result the
regulator unit is lifted, the valve (20) opens and the
condensate or gas drains.
A small part of the fluid ("leak passage") flows
through the regulator unit with the membrane
regulator capsules. This partial flow enters the valve
body and the tube (24), flows into the chamber and
leaves through the annular slot (17) and the cone
(19).
This ensures that the membrane regulator capsules
always have the same temperature as the fluid.
Immediately before the boiling temperature of water
is reached the membrane regulator capsules are
back in the closed position.
The annular slot causes the pressure in the
chamber to drop and,consequently, the valve
closes.
The dampening plate (22) and the chamber (23)
prevent the steam trap from opening and closing
abruptly.
Manual setting
In addition to the automatic opening and closing
process you can also adjust the valve opening
manually.
Equipment with DN 50 has only one adjustment
screw. With this equipment you can only adjust
either a maximum or a minimum flowrate.
Equipment from DN 65 onwards is provided with
two adjustment screws. Use the adjustment screw
on the top cover to regulate the maximum flowrate.
Use the adjustment screw on the bottom cover to
regulate the minimum flowrate.