Operation and Maintenance Manual – Steam sterilizers mod. PRATIKA
Rev. 01 del 03-01-2007 - C:\Documenti\Manuali di istruzione\PRATIKA GB-R01.doc
Pag. 20 di 27
9.6 Recommended inspections and replacements (after about 1000 cycles)
(ONLY FOR TECHNICIANS)
1) Make sure that the safety valve functions correctly.
- Remove the protective casing
- Carry out the 134° cycle and when the maximum pressure has been reached (2.2 bar), unscrew and
retighten the knurled ring nut on the safety valve.
- Check to make sure that steam issues by unscrewing the ring nut and, vice versa, that total retention is
achieved by tightening the same knurled ring nut again.
2) Replace the bacteriological filter
3) Clean and inspect the sterilizing chamber (there must be no trace of scaling or coloured tarnishing)
4) Make sure that the cock (14) is not clogged by blowing through it with a little compressed air.
5) Check the condition of the door seal (change it if it is cut or torn).
6) Make sure that the micro and micro-pressing system allows the door to close correctly. Lubricate with
a silicone spray.
7) Replace the filter on the water fill line.
8)Remove and clean the steam generator level probe.
9) Replace the N.C. solenoid valve of the steam generator code 3028.
10) Replace the steam generator load pump code 3712.
Intervention date…………………………signature of the authorized technician………………………
N.B. to send back as photocopy if the building factory required it.
9.7 Corrective actions to prevent faults
1) Change the water inlet filter (internal) code 1484.
2) Clean the "Y" shaped filter (if installed) code 3136, and replace its seal, code 3188.
3)
Check the quality of the distilled water using the relative instrument (from 0 to 20 mSiemens)
.
4) Replace the diaphragm and head seal of the vacuum pump (specify the model or serial number of the
machine).
5) Replace the N.O. solenoid valve or coil, code 1015.
6) Before closing up the machine, generally inspect the internal components to make sure that they are in
a good condition.
7) After these operations have been carried out, print out the report on the first cycles to make sure that
the sterilizer operates in a normally efficient way.
8)
Check the temperature and pressure in the chamber with a special “logger” type instrument.
