10 Operation
© Moog GmbH User Manual "D633-A Series" (CA80942-001; Version 1.0, 12/08) 51
10 Operation
Safety instructions:
Operation
DANGER
During operation, do not carry out any work, such as e.g.,
mounting or removal, electrical or hydraulic connection,
troubleshooting or servicing, on the valves or the ma-
chine.
Failure to comply with this requirement results in danger due
to:
• Hydraulic fluid squirting out under pressure
• Uncontrolled sequences of motions
• Destruction
• Malfunction
Before working on the valves or the machine, shut down
and switch off the machine without fail and de-energize
and depressurize the machine.
For this purpose, switch off the command signal of the valves
as well as the supply voltage of the connected peripherals,
such as e.g., externally powered transducers or programming
units.
Secure the machine without fail against restarting.
Examples of suitable securing measures:
• Lock the main command device and remove the key
• Attach a warning sign to the master switch
DANGER
Operating machines with damaged or defective compo-
nents or with a leaking hydraulic system is dangerous and
not permitted.
Before starting up or operating the valve, check the higher-
level machine including all of its installed components for dam-
age and defects.
Pay particular attention here to higher-level and hydraulic
safety devices, such as e.g., EMERGENCY STOP switches
and pressure-limiting valves.
In addition, to avoid damage or leaks, perform the following
tasks at regular intervals in accordance with the instructions of
the manufacturer and the operator of the machine:
• Checking the valve and the hydraulic system for exter-
nally identifiable damage and defects.
• Checking for loose plugs/connectors.
• Checking the cleanliness level of the hydraulic fluid.
• Checking the port O-rings for elasticity, integrity and cor-
rect seating.
Chapter "11.2.1 Checking and replacing the port
Report damage or defects to the relevant department im-
mediately. If necessary, shut down and secure the ma-
chine immediately. Rectify any leaks immediately in accor-
dance with this user manual, paying particular attention to
the notes/instructions on handling in accordance with
safety requirements.
