Bosch Rexroth A2FM series - Project planning notes; Working ports; Safety instructions; Operational Safety and Risk Management

RE 91001-01-X-B2/01.2016, Bosch Rexroth AG
Axial piston fixed motor | A2FM for explosive areas
Project planning notes
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Project planning notes
▶ The motor A2FM is designed to be used in open and
closed circuits.
▶ The project planning, installation and commissioning of
the axial piston unit requires the involvement of quali‑
fied personnel.
▶ Before using the axial piston unit, please read the corre‑
sponding instruction manual completely and thoroughly.
If necessary, request it from Bosch Rexroth.
▶ Before finalizing your design, request a binding installation
drawing.
▶ The specified data and notes must be observed.
▶ Depending on the operating conditions of the axial
piston unit (working pressure, fluid temperature),
thecharacteristic may shift.
▶ Preservation: Our axial piston units are supplied as stan‑
dard with preservative protection for a maximum of
12months. If longer preservative protection is required
(maximum 24 months), please specify this in plain text
when placing your order. The preservation periods apply
under optimal storage conditions, details of which can be
found in the data sheet 90312 or the instruction manual.
▶ Not all variants of the product are approved for use in
safety functions according to ISO13849. Please consult
the responsible contact person at Bosch Rexroth if you
require reliability parameters (e.g. MTTFd) for functional
safety.
▶ Working ports:
– The ports and fastening threads are designed for the
specified maximum pressure. The machine or system
manufacturer must ensure that the connecting ele‑
ments and lines correspond to the specified applica‑
tion conditions (pressure, flow, hydraulic fluid, tem‑
perature) with the necessary safety factors.
– The working line ports and function ports can only
be used to accommodate hydraulic lines.
Safety instructions
▶ During and shortly after operation, there is a risk of
burns on the axial piston unit and especially on the
solenoids. Take appropriate safety measures (e.g. by
wearing protective clothing).
▶ Moving parts in control equipment (e.g. valve pistons)
can, under certain circumstances get blocked in posi‑
tion as a result of contamination (e.g. impure hydraulic
fluid, abrasion, or residual dirt from components).
As aresult, the hydraulic fluid flow or build‑up of torque
of the axial piston unit will no longer respond correctly
to the operator's commands. Even the use of various
filter elements (external or internal flow filter) will not
rule out a fault but merely reduce the risk. The machine/
system manufacturer must test whether remedial mea‑
sures are needed on the machine for the application
concerned in order to set the consumer being driven
toa safe position (e.g. safe stop) and if necessary to
ensure it is properly implemented.