6.4. Possible purge cycle problem

Table 6‑2 Possible purge cycle problem

Problem	Cause	What to check for
Inadequate air flow through the robot	Air supply capacity inadequate	The air supply is inadequate. Check the air pressure at the pneumatic air supply.
Air leakage from robot	Bad seal	look for leakage around cover gaskets and bearing seals at the cable entrance to the robot , holes where plugs or screws are missing through unsealed conduit.
Pressure switch or air flow switch does not appear to work	Defective pressure switch or air flow switch	Perform the pressure switch test and air flow switch test to check components.
Inconsistent readings on the pressure gauge	Air leaks or other problems with the pneumatic air distribution	Check continuity of the pressure switch and air flow switch during dynamic test conditions. Check pressure gauge

6.4. Possible purge cycle problem​