Xylem hydrovar, Installation, Operation And Maintenance Manual

Page: 100 / 116

9 Maintenance
9.1 General
Electrical Hazard:
Before any service or maintenance disconnect the system from the power supply and wait
at least 5 minutes before starting work on or in the unit (the capacitors in the intermediate
circuit are discharged by the internal discharge resistors).
The unit does not require any special maintenance.
Check list
• Make sure that the cooling fan and the vents are free from dust.
• Make sure that the ambient temperature is correct according to the limits of the unit.
• Make sure that qualified personal perform all modifications of the unit.
• Make sure that the unit is disconnected from the power supply before any work is
carried out. Always consider the pump- and motor-instruction.
For further information, contact the local distributor.
9.2 Check error codes
Check the error codes in parameters P26 – P30 on a regular basis.
For more information about the parameters, see
P26 thru P30: ERROR memory (page 52) .
For detailed information about the error codes, see Warnings and errors (page 99).
9.3 Check the functions and parameters
If the hydraulic system is changed then follow this procedure.
1. Make sure that all functions and parameters are correct.
2. Adjust the functions and parameters if necessary.
9 Maintenance
98 HVL 2.015-4.220 Installation, Operation, and Maintenance Manual