Mocom B CLASSIC - 5 Technical Datasheet; Technical Datasheet St01 - Steam Generator

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EN
TECHNICAL MANUAL - B CLASSIC / B FUTURA / S CLASSIC
TECHNICAL DATASHEET
5. TECHNICAL DATASHEET
5.1 TECHNICAL DATASHEET ST01 - STEAM GENERATOR
The STEAM GENERATOR is installed on “B CLASSIC/FUTURA” models. It is secured to the rear/left upright of auto-
clave frame and can be accessed after removing the left side panel and the rear panel.
WARNING:
The STEAM GENERATOR can become very hot and may reach temperatures above 150°C; check
the reading of PT2 – generator temperature sensor in the SERVICE menu before removing the side
covers.
Power off the autoclave and disconnect the power mains cord before removing the side covers.
The GENERATOR is protected by a insulating covering that must be retted after completing any maintenance opera-
tion; two double insulating washers are required at each fastening point to the frame and they must be retted correctly.
GENERAL CHARACTERISTICS
The generator is made of a cylindrical outer body and a grooved inner core that are connected by a threaded coupling;
the two sections can be separated for maintenance purposes.
Pressure is sealed between cylindrical body and inner core thanks to two O-ring placed on the core; these O-rings must
be replaced each time the generator is disassembled.
The cylindrical body accommodates:
- PT2 - generator temperature sensor, housed in a suitable seat, secured with a retaining screw; PT2 can be removed
and replaced.
- Safety thermostat – 300°C operation threshold – manual reset.
- Water inlet tting – bottom.
- Steam outlet tting – top.
The grooved inner core accommodates the heating element – 1000+1000W/115+115V – removable.
The heating element has 3 wires and is made up of two sections rated 13.3 ohm each (total 26.6 ohm)
Resistance can be measured directly at the points where the heating element is connected to the general electronic
card using a common tester.
SERVICE OPERATIONS
Replacing the safety thermostat
The thermostat can be removed without taking off the external heat insulation.
Disconnect the wiring connected to the safety thermostat, remove the 2 fastening screws, position the new thermostat
and secure it using the 2 screws, reconnect the wiring.
Replacing the heating element
- Remove the steam generator from its mount removing the 2 fastening screws and their double insulating washers.
- Open the lower section of the heat insulator, remove the retaining screw that holds the heating element in place,
withdraw the heating element from its seat in the middle of the central core
- Insert the new heating element gradually to let air ow out and push until fully home
- Lock the heating element in place using the retaining screw, placing the washer into the groove in the outer casing
of the heating element.
- Ret the heat insulation, ret the steam generator on its mount using the 2 fastening screws and the double insu-
lating washers
Replacing the PT2 sensor
- Remove the steam generator from its mount removing the 2 fastening screws and their double insulating washers.
- Disconnect PT2 wiring from the general electronic card
- Remove the retaining screw and pull the sensor out of the seat in the generator outer body
- Position the new sensor and secure it in place with the retaining screw
- Re-connect PT2 wiring to general electronic card
- Ret the heat insulation, ret the steam generator on its mount using the 2 fastening screws and the double insu-
lating washers