Troubleshooting
6-8
Part 1079832_04
E 2015 Nordson Corporation
Checking an Air Pressure Regulator
An air pressure regulator is used to control the air pressure to the solenoid
valves for the module‐actuating air and to control the pattern air. Follow this
procedure to check a regulator.
1. Relieve system pressure. Refer to Relieving System Pressure in
Section10, Filter.
2. Reduce the air pressure to 0 bar (0 psi) at the regulator.
3. Disconnect the regulator air line that is connected to the solenoid valve or
to the pattern air inlet.
4. Slowly increase the regulator air pressure:
S If no air flows from the regulator, it is faulty. Replace the regulator.
S If air flows, the air pressure may be low. Continue to the next step.
5. Determine the pressure of the air being supplied to the regulator:
S If the air pressure is below 2.1 bar (30 psi), there is an input air
pressure problem. Troubleshoot and correct the air pressure problem.
S If the air pressure is 2.1 bar (30 psi) or greater, the input air pressure
is okay. Return to the appropriate troubleshooting table.
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