Bosch Rexroth H-4WEH...XE Series - 8 Commissioning; Checking Connections and Electrical Components

34/52 Commissioning
BoschRexrothAG, H-4WEH...XE..., RE24751-XE-B/10.19
8 Commissioning
WARNING
Faulty assembly!
If the valve is not correctly mounted, persons might be injured and the valve
orsystem could be damaged when commissioning the valve.
▶ Only commission your system after all hydraulic connections and the valve have
been completely and properly mounted accordingto the specifications.
▶ Look out for defective sealing points and exchange defective seal rings
immediately.
▶ Wear personal protective equipment during the initial commissioning.
▶ The solenoid coil may only be commissioned if mounted to the valve including
pole tube and mounting nut and if the protective grounding conductor and the
connection for potential equalization conductor are connected to the valve
mounting surface.
Inadmissibly high operating pressure!
In hydraulic applications with different area ratios, the hydraulic pressure is
fortified and may - in case of incorrect design - lead to exceedance of the maximum
admissible operating pressure. Thus, the valve may burst or the closing elements
may be ejected and cause personal injury.
▶ Before commissioning the hydraulic system, ensure that the maximum
admissible pressure of the valve in the system is not exceeded by any means.
▶ Ensure that in your system, the maximum admissible operating pressure is
secured by means of a pressure limitation element.
Damage to persons and property!
Commissioning the valve requires basic hydraulic and electrical knowledge.
▶ Only qualified personnel (seechapter2.4 "Qualification of personnel") is
authorized to commission the valve.
NOTICE
Risk of short-circuit!
Condensed water can build up in the terminal box and cause a short-circuit!
▶ Allow the valve to acclimatize for a few hours prior to commissioning as the
electronics might be damaged by the generation of condensed water.
Proceed as described in the following sections to commission the valve:
The following applies to all valves irrespective of the typeof connection:
▶ The connection line must be checked for proper condition by or under
the guidance and supervision of a specialized electrician before the initial
commissioning or any re-commissioning.
▶ Replace damaged connection lines.
Checking the
connection line