Vmac G300003, Инструкция по установке, эксплуатации и обслуживанию

Страница: 46 / 100

VMAC
– Vehicle Mounted Air Compressors
VMAC Technical Support: 1-888-241-2289
VMAC Knowledge Base: www.kb.vmacair.com
44
Inspecting and Replacing the Pressure Relief
Valve
Read the
“Maintenance and Repair Safety” section prior to
performing any work on the system (beginning on Page 38).
Wear appropriate Personal Protective Equipment and follow
all industry standard safety practices.
Do not use the pressure relief valve as a means of releasing
pressure from the system. Doing so will prematurely wear
the internal spring, preventing the valve from maintaining
normal system pressure.
The Pressure Relief Valve is a regular service item, and must be replaced
every 400 hours or 1 year, whichever interval occurs first.
Inspect the pressure relief valve for signs of corrosion or loss of functionality.
To test the pressure relief valve functionality:

Visually inspect the valve and ensure it is not corroded and that the vent
holes are not plugged.

Turn the system on and allow it reach full system pressure (factory
setting 150 psi).

Ensure that air does not leak out of the valve. Air leaking from the
pressure relief valve when system pressure is at or below 150 psi
indicates that the spring in the valve is worn and the valve must be
replaced.

If the pressure relief valve is showing loss of functionality, contact a local
VMAC dealer for a replacement.
A replacement pressure relief valve is included with the VMAC
400 hour service kit.
Figure 31
– Pressure relief valve (Shroud removed for clarity)
200 psi relief valve