Technical data

Maintenance
5-19
P/N 7135049A
E 2007 Nordson Corporation
VBC_Siemens
Pneumatic Safety Valve
The safety valves, preset at the factory and lead sealed, prevent higher
pressurization than permitted of the subsequent pneumatic components.
When the factory settings are exceeded, compressed air audibly escapes.
NOTE: The safety valves for the pneumatic options are located in the
melter tower.
Performance Check
The performance of the safety valve should be checked approx. every six
months. Do this by turning the knurled screw until the compressed air is
audibly released. If the safety valve does not function properly, it should be
cleaned. If it still does not function, it must be replaced.
NOTE: A defective safety valve may be replaced only with an original spare
part. Only the manufacturer may perform repairs to the safety valve!
Fig. 5-20
Cleaning
Pollution that has penetrated fitting surfaces and conical nipples can be
removed by unscrewing the entire top piece − without changing the
minimum operating pressure. Use a sickle wrench to unscrew.
Fig. 5-21