4.4.
Replacing seals
Replace seals only by hand or using blunt tools, or have them replaced by an AMC service
center.
Seals and sealing ring can be obtained from AMC as a package.
Use only AMC original spare parts for model 4300.
Do not confuse the openings for the sealing washer for the operating pressure valve or
for the steam-venting valve.
Sealing washer for the operating pressure valve
Insert the sealing washer into the opening. Note insertion
position: smaller diameter at the bottom.
Steam-venting valve
Insert the seal into the opening
The flat side of the rubber seal must be on the
underside of the bottom cover.
The groove of the rubber section must fit cor-
rectly in the hole of the plate.
O-ring for safety valve 2
Push the O-ring on until it lies in the groove (at the bot-
tom). Do not pull the valve body out of the bottom cover.
Sealing cap for safety valve 3
Push the sealing cap on completely.
Do not put the O-ring of safety valve 2 over
safety valve 3.
O-ring under the Visiotherm S
Carefully push the O-ring over the thread. The O-ring
must lie completely at the bottom of the groove.
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