Buhler 535 - Manual (Page 116)

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Flow Control Adjustment
Each remote valve has a flow control knob () to meter
oil flow . The knob controls flow from 4 to 02 L/MIN
( to 27 GPM) . Turn the knob so the higher vertical
decal stripe (2) is visible to increase the rate of oil
flow . Turn the knob so the lower vertical decal stripe,
(3) is visible to decrease the rate of oil flow .
WARNING: BEFORE CONNECTING OR
DISCONNECTING HYDRAULIC HOSES AT THE
REMOTE CYLINDERS, RELIEVE THE PRESSURE
IN THE CIRCUIT BY FIRST STARTING THE ENGINE
AND THEN MOVE THE CONTROL SWITCHES FULLY
FORWARD TO THE “FLOAT” POSITION. THEN STOP
THE ENGINE.
MAKE SURE NO ONE WILL BE INJURED BY MOVING
EQUIPMENT WHEN RELIEVING PRESSURE IN THE
SYSTEM. BEFORE DISCONNECTING CYLINDERS
OR EQUIPMENT, MAKE SURE THE EQUIPMENT OR
IMPLEMENT IS SUPPORTED SECURELY.
NEVER WORK UNDER EQUIPMENT SUPPORTED
BY A HYDRAULIC DEVICE BECAUSE IT MAY DROP
IF THE CONTROL IS ACTUATED (EVEN WITH THE
ENGINE STOPPED) OR IN THE EVENT OF HOSE
FAILURE, ETC. ALWAYS USE A SECURE SUPPORT
FOR EQUIPMENT WHICH MUST BE SERVICED
WHILE IN THE RAISED POSITION. MAKE SURE THAT
OIL CONTAINED WITHIN THE REMOTE CYLINDERS
IS CLEAN AND IS OF THE CORRECT GRADE.
Low Pressure Return Circuit - Case Drain
A case drain line () is available to connect the return
line from the hydraulic motor or implement to the
coupler . This low pressure return circuit will reduce
back pressure in the remote hydraulic return line which
will result in more efficient hydraulic motor operation .
The return circuit can also be used in applications
where low return oil pressure is desired to improve
implement operation such as orbit motor case drain
lines .
NOTE: Connectors and couplers are available from
your Buhler Versatile authorized dealer.
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Section 3 - Operation
Hydraulic Operation - Electro-hydraulic