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5.3. Program 3: WDry 134
Program 3 is recommended for sterilizing double wrapped instruments,
porous loads and Hollow A (e.g. dental hand pieces, suction pipes)
loads at temperatures of 134ºC / 273ºF with 20 minutes drying stage,
which its manufacturer declares their compliance to be sterilized in the
following conditions:
The solid load shall not exceed 8kg (17.6 lb).
The porous load shall not exceed 2kg (4.4 lb).
Nominal Parameters
• Sterilization temperature: 134ºC (273ºF).
• Sterilization time: 4 minutes.
• Dry time: 20 minutes.
• Max. cycle time: 50 minutes.
• Average cycle time: 42 minutes.
Operation Sequence
• Air removal phase; three vacuum pulses as described in the diagram
below. Saturated steam is introduced into the chamber until the
sterilization temperature is reached.
• Sterilization phase; temperature and pressure are maintained
constant at the pre-set level for the sterilization time.
• Fast exhaust phase; steam is rapidly exhausted from the chamber,
followed by a continuous vacuum pulse for the drying stage,
followed by vacuum break (air inlet), until pressure equalizes
atmospheric pressure.
Cycle start
Cycle end
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