14
Maintenance
For EMD HP to work reliably, strainer mesh should be cleaned regularly. The mesh is part of
bottom cover. It intercepts larger solid particles that would clog valve. Cleanings period
depends on condition of compressed air system.
The valve is due to wear. When the valve is worn out, a complete valve assembly should be
replaced. The valve assembly could be ordered as spare part.
Strainer cleaning procedure
Keep to the safety rules when working with
pressure equipment.
First, close the valve. Then, press the test button
to depressurize EMD HP!
Detach the bottom cover with strainer mesh.
Then, clean strainer mesh. At the same time,
check its integrity. Clean also O-ring sealing and
its gland thoroughly. Otherwise, strainer sealing
may start to leak.
Be careful while cleaning, because solid particles
in debris may be sharp.
Reattach bottom cover insert back to its
position and open valve slowly.
Replacement of valve assembly
1.
First, close the valve in press the test button to depressurize EMD HP.
2.
Than disconnect the unit from electrical power supply.
3.
Detach valve connector and bracket 14. Unscrew the valve 12 and flow choke 13.
4.
Clean remains of a treadlocker glue.
5.
Install new valve with flow choke 13. To seal assembly, use threadlocker glue. Fix the valve
with bracket 14. Reattach valve connector.
6.
Only after the glue is cured, pressurize EMD HP.
After maintenance work, press the test button
to drain all condensed water which has
meanwhile collected in the compressed air
system.