WIKA GTU-10 - Handbuch (Seite 17)

17 WIKA operating instructions portable SF
6
gas transfer unit, model GTU-10
14051107.01 06/2013 GB/D
GB
7. Maintenance and cleaning / 8. Faults
7. Maintenance and cleaning
7.1 Maintenance
Repairs must only be carried out by the manufacturer or the manufacturer's authorised
personnel.
Before all work is carried out on the machine, the machine must be switched off and the
mains connector pulled out. Valves must be properly vented before any maintenance
work.
A cooling phase of a minimum of 10 minutes must be observed.
The electrical connection is made via a male rubber connector in accordancte to
IEC 60320 / C14, the isolation from the mains supply is achieved by pulling out the
female rubber connector acc. to. IEC 60320 / C13.
Service interval
■ 1.8 m 3 /h: after 500 hours operation
■ 1.1 m 3 /h: after 100 hours operation
7.2 Cleaning
CAUTION!
■ Before cleaning the instrument, disconnect it from the voltage supply
and leave it switched off for at least 10 minutes.
■ Clean the instrument with a moist cloth.
■ Only air-clean the opened unit using compressed air.
■ Electrical connections must not come into contact with moisture.
■ Do not use aggressive cleaning agents.
■ Do not use any pointed or hard objects for cleaning.
For information on returning the instrument see chapter 9.2 “Returns”.
8. Faults
Faults Causes Measures
Compressor will not start Gauge pressure > 40 bar abs. Relieve the outlet pressure,
empty the tank at the outlet
Safety valve is actuated Pressure switch has failed Send the unit back to the
manufacturer for testing (see
chapter 9.2 "Returns")
Noisy operation of the
compressor
Compressor wear Contact service.
If complaint is unjustified, the handling costs will be charged.
OI_14051107_GTU-10_GB_D.indd 17 13.06.2013 11:28:17