Volvo REMU, User Manual, Page: 29 / 44

USER MANUAL
29
6.5.2 Rotors Turn Slowly
If the rotors turn slowly the problem could be caused by:
A.
Reduced hydraulic oil flow from the carrier.
Action:
Check flow at carrier service ports with flow meter.
B. The carrier’s operating pressure could be below the required level.
Action:
Check carrier system pressure while screening unit is in stalled condition
with pressure gauge.
C. The rotors and/or bearings could be binding.
Action:
After checking A and B above, remove chain inspection cover and remove
drive chain between motor(s) and try to spin the rotors. If rotors are free
the motor(s) require further investigation and/or overhaul. If the rotors
cannot be turned remove the remaining chains between the rotors to
determine which rotors cannot be spun separately. Remove the drive
sprocket from the rotor(s) that cannot be spun, check the bearing and
replace it if needed.
6.6 Material Size
If the primary material size increases over a period of time, it may indicate
that the rotor blades and side rakes have worn. If primary material size is
larger than required specification then the rotor assemblies will have to be
hardfaced or replaced.