Specifications

15
Compactor Owner’s Manual
To run, a compactor needs hydraulic flow in one direction within a work-
ing pressure range. When installing the compactor the carrier hydraulic
circuit must have the following:
• The carrier must have a hydraulic circuit which will provide the
correct flow
• A switch to activate the compactor
• A circuit relief valve
TYPICAL HYDRAULIC CIRCUITS
In conditions where back pressures in the main return line to the carrier
are higher than recommended, BTI requires the use of an external case
drain from the gear motor to the carrier's hydraulic tank. This separate
drain line allows for low pressure-direct communication between the low
pressure cavity of the hydraulic motor and the carrier's hydraulic tank.
This translates into a 1/4" or 3/8" case drain line for TC51 and TC71
compactors and a 3/8" or 1/2" case drain line for TC92 to TC301 com-
pactors.
The case drain allows the oil to drain to tank without having overcome
the back pressure caused by higher flows and restrictive valves.
If a case drain is not a viable option the customer can review the possi-
bility of modifying the return line circuitry within the carrier to reduce
the back pressure. Each situation is different however typically:
1. Increasing the diameter of the return line will reduce the back presure.
2. Bypassing restrictive valves in the return line will reduce the back
pressure.
3. Insuring the return filer (if equipped) is clean and properly sized for
the application will reduce back pressure.
4. Using lower viscosity hydraulic oil (within carrier manufacturer's
specification) will reduce back pressure.
5. Insuring the carrier's hydraulic circuit is at proper operating tempera-
ture before operation.
This should be carried out by a trained technician under the approval of
the carrier manufacturer.