MTS Isolation Service Manifold - Manual (Page 34)

Isolation Service Manifold 34 Operation
Important When the return to drain hand valve is opened, hydraulic fluid will
start to flow out the maintenance drain port. Be sure you have a
suitable container ready to catch the fluid.
You can connect a scavenge pump to suck fluid out of the system’s
hydraulic line to ensure all fluid is drained from the hydraulic lines.
However, if a pump is used you will need to allow air into the
system for proper suction.
Note Hydraulic fluid is drained out the Maintenance drain via gravity. Any fluid
lower than the vent output will not be drained from the system unless
some sort of scavenge pump is used.
7. Use the spring loaded hand valve to dump return to the maintenance drain
port.
The valve is spring loaded and must be held in place until pressure is zero.
Pressure can be monitored on the pressure gage on the ISM front panel.
When all fluid has been drained from the system, release the hand valve.