Overpressure Security; Desaeration; Overpressure Valve - Animo Wks Service

Animo
6. Unscrew the clamping ring from the lid (fig. 2H) and remove the lid from the boiler.
7. Remove the scale from the boiler and lid.
8 Mount the boiler again. Make sure that the heating element should be mounted square
headed on the 2 screw-attachment (on the bottom of the boiler).
9. Reconnect the tubes, wires and dry boil protection on the original connection (fig. 2)

12. OVERPRESSURE SECURITY

• Function of desaeration of the overpressure valve, see paragraph 12.1.
• Functions of the overpressure valve, see paragraph 12.2.

12.1 Desaeration

The overpressure valve has a built-in desaeration valve, which makes sure that the air that
expands during the heating process of the steam boiler can get out.
In the valve seat (fig. 3A) there is a small hole which lets
the air out directly from the steam boiler. In the space of
the valve seat there is a small St/st ball (fig. 3B). When
the amount of escaped air increases (when the water has
reached its boiling point), the ball is pushed up against an
O-ring (fig. 3C), so the air can no longer escape. At that
moment the working pressure can be built up.
In a reverse situation: when there is suddenly a large
temperature drop in the steam boiler which causes a
vacuum, the desaeration function works as an aeration
function.

12.2 Overpressure valve

When the pressure in the steam boiler becomes too high,
the valve seat (fig. 3A) is lifted against the spring pressure
(fig. 3D) which enables the overpressure to escape. The
pressure can be set with the adjusting nipple (fig. 3F) by
turning it in or out, which makes the spring pressure vary.
Once the spring pressure has been set, the adjusting
nipple can be secured with a safety screw (fig. 3G).
WKS
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Service manual
D
C
B
G
F
E
fig. 3
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