Bosch Rexroth H-4WEH...XE Series - 10.2 Inspection and maintenance

Maintenance and repair 39/52
RE24751-XE-B/10.19, H-4WEH...XE..., BoschRexrothAG
10.2 Inspection and maintenance
WARNING
Uncontrolled machine movements!
Risk of injury due to maintenance work at an activated machine.
▶ Unless expressly prescribed otherwise, deactivate the machine via the main
switch, lock it and remove the key before carrying out any work.
The following inspection, testing and maintenance work is to be carried out regularly.
The intervals for the same have to be selected in a way that - also depending on
the operating conditions - expected deficiencies are identified in good time. The
check must, however, at least be carried out every three years from the date of
manufacture of the valve. The date of manufacture of the valve can be seen on the
name plate, seechapter5.1.1 "Information on the name plate and the valve solenoid
housing".
Before the initial commissioning or re-commissioning of the valve in a system,
check whether the valve requires maintenance. If required, carry out
maintenance.
For order details for seal kits, please refer to chapter10.6 "Spare parts".
In order to ensure a long life cycle and functionality, include the following activities
in your maintenance schedule for the overall system:
1. De-energize and de-pressurize the relevant system part.
2. Remove coarse dirt from the exterior.
CAUTION! Damage to persons and property caused by electrostatic charging!
▶ In order to avoid electrostatic charging, clean the valve using a damp cloth only.
3. Check all external fittings for completeness and tight seat.
4. Check cable and line entry, plug screw, external grounding connection and
connection line for tight seat.
5. Check the valve for external leakage and replace the sealing devices, if required,
seechapter10.5 "Rectifying external leakages".
6. Open the terminal box and replace any damaged seals.
7. Check the inside of the terminal box for corrosion. Corrosion is an indication of
leakage. In case of visible corrosion, remove the valve and have it repaired.
8. Check the potting compound and internal lines and braided wires of the valve
solenoid for visible damage. In case of visible damage, remove the valve and have
it repaired.
9. Check all screws and connections for tight seat.
10. Check all connection lines for damage. Replace the connection line if there is any
visible damage.