Marco 1000830, Руководство по обслуживанию

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SP9 ServiceManual.docx 06/02/2015 Page 19 of 42
The most common error indication on a boiler is the Ready light giving two red flashes
between pauses, indicating that water can’t be seen in the tank. This can be caused by a
number of issues, most commonly, limescale or film build up on the water level probes.
Descaling Procedure:

Isolate machine from power supply.

Isolate machine from water supply.

ALLOW TO COOL COMPLETELY!

Drain water from machine.

Remove all lids.

Remove as much scale as possible by hand, paying particular attention to level probes
(White plastic with steel tab). Be very careful not to damage any attachments.

Use ScaleKleen, Marco part No. 8000270 or similar. Follow instructions carefully.

Thoroughly clean and flush the machine before re-use.

Clean water level probes with ScotchBrite

Follow installation and first time operation instructions
NB: Always clean the water level probes after descaling and rinsing the tank.
To Clean Water Level Probes:

Turn off water feed to unit

Dispense as much water from unit as possible using two clicks at the head unit

Turn off unit at wall socket or unplug from wall socket

Remove top cover from boiler

Remove tank lid from tank

Identify water level probes
– flat metal tabs inside water tank - 3 probes

Thoroughly clean probes with ScotchBrite (or scouring pad)

Replace tank lid and top cover

Reconnect power and water to boiler and operate as normal