1
Maintenance
5‐6
P/N 397189E
E 2006 Nordson Corporation
BM200_EASY_GEAR
Pneumatic Pressure Restrictor Valves
The factory‐set, lead‐sealed pressure restrictor valves prevent unpermissibly
high pressurization of subsequent pneumatic components. When the values
set at the factory are exceeded, the compressed air is audibly discharged.
NOTE: There are pressure restrictor valves
S on the drum aeration valve (4, Fig. 2‐2)
S in the pneumatic box (1).
Function Testing of Pressure Restrictor Valve
Functioning of the pressure restrictor valve should be checked approx. every
six months. Do this by turning the knurled screw until the compressed air is
audibly released. When functioning is not correct, the pressure restrictor
valve should be cleaned. If it is still not working as it should, it must be
replaced.
NOTE: A defective pressure restrictor valve may be replaced only with an
original spare valve. Repairs to the pressure restrictor valve may be made
only by the manufacturer!
Cleaning Pressure Restrictor Valve
Pollution that has penetrated seat 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.
Function test Unscrewing top
Fig. 5‐3
Note: The illustration shows the old model with locking wire instead of a lead sealing disk.
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