GENERAL INSTRUCTIONS FOR SAFETY AND USE
Black Bruin Hydraulic Motors
BB, BBC, SSTC and B200 series
4.1.2018
BLACK BRUIN
EN - 3
www.blackbruin.com
COMMISSIONING PROCEDURE
Ensure that the following things are in order before
starting a new or replaced motor:
µ
The hydraulic circuit of the motor is flushed.
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Motor is installed appropriately.
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Air bleeding procedure is carried out.
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The reservoir of the hydraulic system is full.
During the initial stages use, also take the following
things into consideration:
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Do not run the motor immediately with full power.
Increase the load and speed of rotation gradually.
µ
Observe the motor and the hydraulic system for
external leaks or abnormal noises during the
commissioning procedure.
µ
Start the motor break-in.
Information!
During all installation and service procedures, plug any
open ports and hoses.
When filling the reservoir, add hydraulic fluid through a
filter.
Attention!
Do not start the motor, if the air bleeding procedure has
not been carried out.
Stressing an unused motor with full power may cause
premature wear or failure of the motor.
AIR BLEEDING PROCEDURE
Air bleeding procedure is carried out to fill the housing
of the motor completely with hydraulic fluid. Air is
removed from the housing with air bleeding screws as
follows:
µ
Locate the air bleeding screws of the housing and
turn the motor to a position in which the screw is at
its topmost position.
µ
Make sure the drain line of the motor is connected.
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Feed hydraulic fluid into the motor with low
pressure throughout the procedure.
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Unscrew the air bleeding screw by half a turn and
let air escape from the housing.
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Close the screw when only hydraulic fluid is
pouring through it.
µ
Tighten the screw to a torque of 39 ± 3 Nm.
The location of the air bleed screws is given in the
product datasheet.
Information!
If feed pressure is not available, fill the housing
manually by pouring hydraulic fluid in the motor
through the topmost opening of the housing.
FLUSHING THE HYDRAULIC SYSTEM
Prior to connecting the motor as part of the hydraulic
system, the hydraulic circuit of the motor must always
be flushed by circulating hydraulic fluid through a filter
installed in place of the motor.
The flushing is carried out by circulating hydraulic fluid
through the entire system with a minimum pressure for
at least an hour.
µ
After flushing, renew all filters.
Information!
Flushing the hydraulic system should also be
performed after every system modification or repair.
BREAK-IN PERIOD
The motor achieves its final properties during the first
hours of use. Therefore all new and reconditioned
motors should go through an initial break-in period.
Things to be considered during break-in period:
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The break-in period should last for at least first
eight hours (8 h) of use.
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The power output should remain under 50 % of the
maximum power capacity of the motor.
µ
The power output is limited by limiting the working
pressure, the speed of rotation or both.
µ
The working pressure should be limited so, that
pressure peaks which last over two seconds (2 s)
remain under 75 % of the permissible values.
Information!
During the break-in period, the moving parts of the
motor wear against each other so, that the wear of the
parts sets to a stable state for the entire service life of
the motor.
USE
Things to be considered during use of motors:
µ
Check the screw connections tightening torque
and hydraulic connections regularly.
µ
Do not use pressure cleaning directly between the
shaft flange and housing of the motor (the shaft
seal area).
µ
Avoid situations in which the motors are
completely submerged in water or mud.