Valve Inspection - MAXIMATOR VP30 Maintenance Information

VP30/VP500
MAINTENANCE INFORMATION

Valve Inspection

Make sure that the compressor is stopped and the power is isolated before carrying out this
work.
Valve Cleaning
Note: do not dismantle valve assemblies for cleaning purposes. Parts within the assembly
can be easily damaged.
Carefully clean the valve plate assemblies using soft scrappers (e.g. Copper, wood, plastic), and
petroleum (gasoline) to remove carbon deposits and dirt. Ensure that any traces of gasket material
are removed and that the mating surfaces are clean and smooth.
1st Stage Valves
Disconnect the inlet hose from the cylinder head 5/14
Unscrew the tubing nut adaptor and detach cooler tube from the cylinder
head.
Unscrew and remove capscrews 5/16 and washers 5/15 evenly.
Remove the cylinder head 5/14 from the cylinder 5/6, removing the valve
plate 5/10
Carefully clean the valve plate assembly 5/10 using soft scrapers (e.g.
copper, wood, plastic) and petroleum (gasoline) to remove carbon deposits
and dirt. Ensure that any traces of gasket material are removed and that the
mating surfaces are clean and smooth.
Clean the inside of the cylinder head 5/14. Ensure that any traces of gasket
material are removed and that the mating surfaces are clean and smooth.
Clean the mating surface and cylinder bore of the cylinder 5/6. Ensure that no dust or dirt particles
remain in the cylinder 5/6. Use compressed air to blow out if necessary.
If the valve plate assembly 5/10 is excessively worn it must be re-placed.
Reassemble in reverse order, fitting new gaskets. When reassembling, lubricate every component
(except gaskets) with clean lubricating oil.
On reassembly, tighten the cylinder head screws to the correct torque loading.
2nd Stage Valves
Unscrew the tubing nut adaptors and detach cooler tubes from the cylinder head.
Unscrew and remove capscrews 6/15 and washers 6/14 evenly.
Remove the cylinder head 6/13 from the cylinder 6/7, carefully removing the 2nd stage valve plate
assembly 6/11 which is located between the cylinder head and cylinder.
Carefully clean the valve plate assembly 6/11 using soft scrapers (e.g. copper, wood, plastic) and
petroleum (gasoline) to remove carbon deposits and dirt. Ensure that any traces of gasket material
are removed and that the mating surfaces are clean and smooth.
Clean the inside of the cylinder head 6/13. Ensure that any traces of gasket material are removed
and that the mating surfaces are clean and smooth.
Clean the mating surface and cylinder bore of the cylinder 6/7. Ensure that no dust or dirt particles
remain in the cylinder. Use compressed air to blow out if necessary.
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