Torrent 30" SHARK, Руководство пользователя

Страница: 22 / 26

30" SHARK
Owner’s Manual
21
Hydraulic Motor Case Over-Pressure Protection
Hydraulic motor case over-pressure relief protection is standard on Torrent mulching
attachments. If for any reason the case drain circuit become restricted due to a pinched case
drain hose, blocked due to a disconnected coupling or failure to open an isolation valve, or
exposed to excessive pressure due to improper installation, the motor shaft seal and casing
are protected from damage by a low pressure relief valve connected to the motor casing.
Should pressure in the motor case exceed 55 psi (3.6 bar), hydraulic oil is vented through the
case over-pressure relief valve discharging to atmosphere through a port visible to the
operator. Should oil be observed issuing from the case over pressure vent, the unit must be
shut down and the cause of the over pressure be identified and corrected. Oil issuing from
the vent while the excavator is running while the mulching pressure circuit is turned off
indicates the pressure is being applied to the case drain circuit by the excavator and
indicates that the case drain circuit has been connected to main return or at a point where
system back pressure is present.
Hose Routing
Hydraulic hoses must be routed in such a way as to prevent pinch points or excessive strain
or tension. Once all three hydraulic hoses are connected between the mulcher and the
boom of the excavator it is important to slowly extend/retract the bucket curl function from
full curl out to stop and then full curl in to stop making certain that the hoses are clear of
pinch points, abrasion or excessive tension. Hoses that are too long when bucket curl out to
stop is reached are susceptible to being caught or torn off during mulching operations, the
vast majority of which is conducted while the mulching drum is parallel to the ground. A
typical routing of the mulcher hose group can be seen in figures # xxxxx