Tuttnauer 3870 EHS (HSG-WS) Инструкция по эксплуатации онлайн [26/58] 387790

3.5 Program 5 (5 - B&D Test)

This is a test program, with fixed sterilization parameters 273ºF and 3.5

minutes that cannot be modified by the operator.

Nominal parameters

♦ Sterilization temperature: 273ºF - 279ºF.

♦ Sterilization time: 3.5 minutes.

♦ Dry time: 2 minutes.

Operations Sequence:

♦ Pre Vacuum stage; four vacuum pulses remove 99.5% of the air by

drawing the chamber down to -11 psig (22 Ih). At the end of the Pre

Vacuum stage s

team enters the chamber from the jacket until the

sterilization temperature and pressure is reached.

♦ Sterilization stage; temperature and pressure are maintained

constant at the preset level for the programmed sterilization time, of

3.5 minutes, by periodic injection of steam from the jacket

♦ Exhaust stage; steam is rapidly exhausted from the chamber

allowing the chamber pressure to reach 0 psig (atmospheric

pressure).

♦ Post Vacuum Drying stage; while the jacket is heated to maintain a

high temperature environment within the chamber, a single vacuum

pulse is created for 2 minutes in order to release and remove

residual moisture from any items within the chamber.

8.5 psig

TIME

PRESSURE (PSIG)

TEMPERATURE

Ambient Pressure

and Temperature

-11 psig (22 Ih)

t1 = Pre Vacuum stage

t2 = Sterilization stage

t3 = Fast exhaust stage

t4 = Post Vacuum Drying stage

= Pressure

= Tem

erature