PDF Operating Manual Cat Bucyrus Electrohydraulic Control Unit - 455 KB
Master the complexities of the Cat Bucyrus 10-function electrohydraulic control unit with this official operating manual.
It details the setup, function, and troubleshooting of this critical system component.
Proper understanding and operation are key to ensuring precise control over your heavy machinery.
This guide is essential for technicians and operators responsible for the performance of this advanced control unit.
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Operating Manual
Electrohydraulic Control Unit,
10 Functions
Doc. no.: 8154 133 000 BA 00
Bucyrus DBT Europe GmbH
Industriestraße 1 Phone: +49 (0) 23 06 / 709 - 0 Email: [email protected]
D-44534 Lünen Fax: +49 (0) 23 06 / 709 - 1421 Web: www.bucyrus.com
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Personnel
Your safety
This chapter provides vital information for your safety.
Pay special attention to this chapter. The safety instructions and ru-
les of procedure will help you to avoid hazardous situations and to
perform the necessary work as safely as possible.
residual risk The electrohydraulic control unit has been manufactured in accor-
dance with the state of the art and generally recognized safety stan-
dards and regulations. However, a certain risk remains which might
get you into hazardous situations when working with or on the elec-
trohydraulic control unit. These may, for example, be caused by un-
foreseeable external influences, machine damage or operating er-
rors.
supplementary regulations In addition to this operating manual, also be sure to observe the re-
spective legal provisions and regulations for accident prevention in
your country.
Observe the safety and accident prevention regulations:
J of the mining company,
J of the mining authority, and
J of the miners’ accident insurance association.
E
Bucyrus DBT Europe GmbH, Lünen 2008
Personnel
Persons employed in the operation, repair, and overhaul of hydraulic
and/or electrohydraulic control unit components must have special
qualifications. In addition to having received training in mining skills
the following minimum requirements shall be met.
Operation and maintenance
qualification Operation and maintenance of the shield control is only allowed to
be performed by trained personnel.
The training shall be matched to the type of shield control actually
used.
The content of the operating manual, especially the chapter on sa-
fety, shall constitute a part of this training.
They shall possess and furnish proof of adequate familiarity with the
J mechanical,
J hydraulic, and
J control systems.
Doc. no.: 8154 133 000 BA 00 VPVT / 02
2.3
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Installation of the electrohydraulic control unit
. Loosen the bolts of the electrohydraulic control unit mounting.
. Pull the electrohydraulic control unit out of the mounting.
Installation of the electrohydraulic control unit
To install the control unit,
. place the electrohydraulic control unit into the mounting and
tighten the bolts (M10) properly.
Fig. 7: Typical installation
11 14 16
7
1
9
E
2 6 10
Bucyrus DBT Europe GmbH, Lünen 2008
4 8
1 3 5 7 9
8
4
3
1 retaining plate 7 hex. head bolt M6x8-A 2-70 11 hex. head bolt M12x40-A 2-70
3 operating plate, 10 functions 8 hex. head bolt M10x20-A 2-70 14 hex. nut M 12-A 4-80
4 operating plate, 2 functions 9 hex. head bolt M10x30-A 2-70 16 hex. nut M 12-A 4-80
Important!
Arrange the symbol plate at the holder of the electrohydraulic
control unit such that the symbols are clearly legible.
Doc. no.: 8154 133 000 BA 00 VPVT / 02
4.5
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Permissible media
Hydraulic fluid maintenance
A consistent good quality of the hydraulic fluid is essential for the
operational reliability of hydraulic systems. Therefore, maintenance
of the hydraulic fluid must not be neglected but should be perfor-
med with special care. The most important properties of the hydrau-
lic fluid should ideally be monitored automatically and recorded in
order to be able to directly counter any harmful effects. These pro-
perties include: temperature, foaming, pH-value, concentrate ratio,
and microbial load.
The operator of the equipment has to prepare a hydraulic fluid
maintenance concept for any individual application. The mainte-
nance concept should be prepared in close cooperation with the
manufacturer of the concentrate and has to be applied consistently.
If it is not possible to monitor the hydraulic fluid continuously the
properties listed in the following should be checked at least once
every week:
J pH-value
– Target value: 7.5 to 9.5
J Concentrate ratio
– Target value: see certificate
J Microbial load
E
Bucyrus DBT Europe GmbH, Lünen 2008
– Target value: < 105 Kol/m
In addition, the electrical conductivity, foaming and the operating
temperature of the hydraulic fluid should be monitored regularly.
The permissible max. temperature of the hydraulic fluid is 55 °C.
During normal operation, however, an operating temperature of
45 °C should not be exceeded. A higher operating temperature will
reduce the stability of the emulsion and shorten the life of the sea-
ling material.
Quality of the process water
The quality of the water used for the preparation of the hydraulic
fluid has an enormous influence on the properties of the hydraulic
fluid. Accordingly, the requirements for monitoring the water quality
are very high.
The following table 2 lists limit values for the essential properties
and components of the water.
If the limit values shown are maintained it can be assumed that the
water is basically suitable.
If one or several of the limit values mentioned are not met this
should be taken into consideration when selecting a concentrate.
Additional water treatment may also be required.
The customer shall in any case, however, provide a sample of the
original water to permit performing the tests required for the issue
of the certificate.
Changes in the composition of the water will also lead to the loss of
the certificate even if they are within the limit values mentioned.
Doc. no.: 8154 133 000 BA 00 VPVT / 02
6.11