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Chapter 9 Appendix
Appendix 1 Fuse replacement
The fuse used by the system is 1A/250V, which is installed in the power outlet at the back of the
main unit.
Pull the power cord from the external power outlet.
Unplug the power cord from the main unit. You can see a fuse holder below the power socket.
Use a screwdriver to pull the fuse holder from socket.
Take out the used fuse from the fuse holder, install new one into holder and push to the end.
Push the fuse holder to the square hole which lies in the lower part of power socket.
Fuse replacement is complete, plug the power cord and connect to an external power supply.
Appendix 2 Pressure reductor installation
The feed water pressure for the system is normally 0.4MPA. If the pressure exceeds this value, a
pressure reductor needs to be installed after the pre-filter.
Please install the pressure reductor according to the water flow direction, do not install it in the
wrong direction, otherwise it will not work normally.
The pressure reductor is adjustable, you can use tools to rotate the cross slots to change the feed
water pressure relief. Please connect a pressure gauge to the outlet and block the following pipe when
you adjust the pressure. Then you need to regulate slowly in accordance with the pressure gauge.
Do not rotate the regulator when you do not have any water pressure test instrument.
Pressure reducer
To main unit
