Doosan NHP10-425WCU-EU-FX-T3, Руководство по эксплуатации и обслуживанию

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Operating & Maintenance Manual Operating Instructions
26
Air Hose Restraining Cable Installation:
Secure hose restraining cable at each end to prevent accidental hose whipping. At the
machine-side of the air hose, install and secure one end of the hose restraining cable on the
3” nipple on the inlet side of the 3” service valve. Install the other end of the hose restraining
cable over the main hose connector.
Install suitable 3” air hose between service valve on unit and point of air use. The air hose must
be rated for outdoor use and for pressurized air service. Minimum rating is 200 psig (1379 kPa)
and 250° F (121° C).
For plant air systems, adhere to the following additional setup guidelines:
Insure that a isolation valve is installed at the header where the 3” hose is connected. This
allows a machine to be removed without shutting down the plant.
WARNING
!
Before removing a machine or disconnecting the air hose, first close the
isolation valve at the plant air header. Allow machine to self vent after
shutdown and assure output pressure is 0 psi. Unrestricted air flow from
a hose will result in a whipping motion of the hose which can cause
severe injury or death.
If a check valve is installed at the customer header and if one of the two automatic line
pressure modulation modes will be used, an additional pressure signal line must be used to
provide the unit control system with air pressure on the plant-side of the check valve.
INTELLISYS Controller remote pressure must be on.
If no check valve is installed at the customer header, plant air pressure will be sensed in the
on-board discharge pipe. Therefore, it is not necessary to install the additional pressure sense
line.
NOTE: The NHP1500 unit has a check valve installed at the outlet side of
the 2nd stage piping in order to prevent large backflow of plant air when
the machine is idling or shutdown.
Make a final inspection of the machine and all connections before starting the unit. Insure that
all connections are tight and that proper hose restraining cables and isolation valve are
installed.