Gardner Denver EnviroAire 15, Оригинальное руководство по эксплуатации

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10. Service and maintenance
40
10.7 Change the RO membrane cartridge
WARNING
Air/water under pressure may cause severe
personal injury.
•
Shut down compressor, relieve system
of all pressure, disconnect, lockout and
tagout power supply to the compressor
package before removing valves, caps,
plugs, fittings, bolts and filters.
•
Make sure that system is leak tight!
Change the RO membrane cartridge as follows:
• Turn off compressor, secure it from being switched
on again, and make sure that it is depressurized
and volt-free.
•
Close the main water supply connection and valve
on the storage tank.
•
Remove the lines to the membrane cartridge head
(-1- Fig. 18).
•
Remove the cartridge head and replace the old filter
cartridge with a new one. Close the RO membrane
cartridge.
•
Refit lines to the RO membrane cartridge head.
• Re-open the main water supply and the storage tank
valve.
10.8 Pressure relief valve
DANGER
When checking pressure relief valve there
is an explosive release of pressure.
Failure to perform this operation in a safe
manner or without safety equipment may
result in personal injury or death.
•
Use the appropriate safety equipment,
hearing and eye protection, and use
safety precautions when performing this
PRV check on an operating machine.
DANGER
A defective pressure relief valve may result
in pressure that is too high, breaking open
parts of the system and causing serious or
fatal injury.
Never operate a screw compressor system
with a defective pressure relief valve or
without pressure relief valve!
Fig. 19
1 Pressure relief valve
2 Valve cap
The pressure relief valve has no user serviceable or
repairable components.
Testing the pressure relief valve
The valve can be tested:
1 On a separate compressed-air system. or
2 When raising the system operating pressure to its
normal level.
Keep local legislation in mind when testing.
Pressure relief valve operation ( -1- Fig. 19) depends on
the valve type and can be carried out by:
•
Lightly turning the valve cap ( -2- Fig. 19)
(1-2 turns), and subsequently closing it again.
•
Operating the lifting lever/pull ring.
If the pressure relief valve doesn't close itself or is
leaky, close the doors of the compressor and push the
Stop Button. After the pressure in the pressure reservoir
is reduced to ambient pressure, renew the pressure
relief valve.