Bosch REXROTH 4WRZ 7X/XE Series Operating Instructions Manual page 30

Proportional directional valves, pilot-operated, without electric position feedback
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Assembly
Bosch Rexroth AG, 4WRZ..7X/...XE..., RE 29115-XE-B/09.19
Danger of damage to property and personal injuries!
Faulty energy supply may lead to uncontrolled valve movements. These could result
in possible malfunctions or failure of the valve and cause injuries.
Only use a power supply unit with safe separation.
Always observe country-specific regulations.
Danger of short circuit caused by missing seals and caps!
Fluids may enter the valve and cause a short-circuit.
Before commissioning, ensure that all seals and caps of the plug-in connections
are leak-proof.
When selecting the connection cable, please observe the requirements regarding
the temperature rating (see "Data sheet 29115-XE") and/or avoid contact of the
connection line with the valve solenoid surface. For selection and installation,
observe the requirements of EN 60079-14.
Ensure that there are no bends in the connection line and braided wires to avoid
short-circuits and interruptions.
Only assemble the cable and line entries according to the assembly instructions.
Before assembly, check whether the individual components of the cable and line
entry are complete and that the sealing elements are undamaged.
The sealing elements of the cable and line entry are only intended for single use.
Only use finely stranded conductors if they have pressed-on wire end ferrules.
Use only lines which satisfy the requirements for the terminal areas of the
connection terminals and the cable and line entries, see "Data sheet 29115-XE".
During the assembly, ensure leak-tightness between cable and line entry and
terminal box. Route the connection line in a strain-relieved form. The first
mounting point must be within 15 cm of the cable and line entry.
Connection of the valve solenoid is polarity-independent.
CAUTION

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