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Operation and maintenance manual HON HSV086 13

Figure 3: Working principle second stage HON HSVS

2.3 Releasing and opening HON HSV / HON HSVS

(see figures 2 and 3)

After having solved the failure, the pressure to be protected returns to a value

between the lower and higher threshold value. Handle H returns to its initial position.

Due to gravity, balance jaw P follows this movement.

In order to make the HON HSV ready-for-operation again, the switch and reset

mechanism must first be reset and then the second stage (if 16” and larger).

Here follows a short description of the actions for releasing and opening the

HON HSV.

 Solve the failure;

 Bring the pressure to be protected to a normal value between the higher and lower

threshold values;

 Ensure that no gas is taken off at the outlet side and that the pressure above and

below the valve is in equilibrium, using a bypass;

 First press and then turn clockwise handle arm R of the lifting component of the

SVC086;

Honeywell HON HSV086 User Manual

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