3.4.1 Performing the checks
n Visual inspection for damage
n Function check: When the ball valve is in the closed position, it
must be locked automatically by the locking strap.
n Visual inspection for damage
n Function check by means of “cracking open”
1. Set the steam generator to its operating pressure.
2. Turn the knurled nut (1) counter-clockwise until steam
escapes from the valve.
WARNING!
Risk of burns
– At the safety valve
– From escaping steam
Wear safety gloves to avoid burns.
3. Tighten the knurled nut again after 4-5 seconds.
NOTICE!
Only hand tighten the knurled nut. Do not use
tool, such as water pump pliers, for example.
CAUTION!
Leaks on the safety valve
If the safety valve is leaking:
– Check if the knurled screw has been tightened
properly by hand.
– If this does not remove the leaks, repeat the
“crack open” procedure as described above
2-3 times. Accumulation of dirt might be the
cause for the leak.
– If the leaks on the valve can still no be
removed, the valve must be replaced.
n Visual inspection for damage and secure installation
Locking strap for ball valve (Pos. 1)
Safety valve (Pos. 2)
“Crack open” procedure
Fig. 6: Knurled nut of safety valve
Temperature limiter (Pos. 3)
Safety
Built-in safety devices > Performing the checks
30.09.2022
Steam generator VEIT SG67
21
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