Page 5
1.5
Printout of the protocol ___________________________________________________
The autoclave has a serial interface jack (21) for
connection of the protocol printer MELAprint
®
40
(order no. 289). Power is also provided to the
MELAprint
®
40 through another connection (20) from
the autoclave.
When the printer is connected, a log containing the
process-relevant parameters will be automatically
printed out after each sterilization or disinfection
cycle (see example of printout at the right).
It is normal here that time metering will be briefly
interrupted once or several times during the first
seconds after beginning of the sterilization period,
during heating of the chamber up to sterilization
temperature.
At the bottom of the printout there is a line without
explain text with service information.
In addition, the last log to be printed out is always
permanently stored in the system memory (even if
power fails). To print out the last log again, press the
„
SELECT“ button (15) and hold it down for at least
3 seconds.
In the case of a fault, a protocol will also be printed
out to indicate the time, the temperature, and the
cause of the fault. Section 8 below contains a list of
the fault numbers and their meanings.
------------------------------------------
MELA
quick
12
------------------------------------------
Date : 23.09.1994
Time : 10:37
Charge No.: 4
------------------------------------------
Program :
Sterilization 134°C
------------------------------------------
Program step Temp. Time
[°C] hh:mm:ss
Preheat Temperaure 132 10:37:39
Start 122 10:37:39
Sterilization start 134 10:39:25
Sterilization hold 134 10:39:27
Sterilization runs 134 10:39:27
Sterilization end 135 10:43:26
End of program 127 10:43:56
------------------------------------------
Program has run
succesfully !
------------------------------------------
Sterilization time : 04 min 00 s
Sterilization temp.: MIN 134°C, MAX 135°C
total Time : 06 min 17 s
------------------------------------------
8 2 09940933 3.22 C1 V1 DS1 PS0
1.6
Water one-way system____________________________________________________
A normal circulating water system, used in most
autoclaves where the steam is condensed in the
water reservoir again, has an importan
disadvantage. The instruments must be absolutely
free from dirt and chemicals before
sterilization/disinfection, otherwise not only the
autoclave but also the instruments will be damaged
and become dirty. However, in daily practice, the
instruments are prepared insufficiently. This is
critical especially for the sterilization of turbines and
contra-angles which
have to be oiled before sterilization. Oil, dirt and
other chemicals are getting into the apparatus and
will stay there because of the circulating system.
This can lead to spotty corrosive instruments and
often to a failure of the autoclave.
For this reason the MELA
quick
®
12
uses the one-
way system: all water and steam used for the
process, is discharged into a waste water
container (23).
1.7
No start of program if water quality is inadequate _____________________________
You have purchased a high-quality German
autoclave product. It is designed to ensure a long life
of service, even if the operator makes certain
mistakes. For this reason, the MELAquick
®
12
has
an automatic warning system which prevents it from
being operated if, for example, the operator forgets
to use distilled water and fills it with normal tap water
(which would damage it by the formation of boiler
scale). The MELAquick
®
12
must be filled with
distilled or demineralized water (aqua dest / dem) in
accordance with DIN/EN 285 or VDE 510. Please
see Section
5.3
on details on
water quality
and on
the
suppliers of the required water
.
In order to prevent the instruments or the autoclave
from being damaged from formation of boiler scale
or corrosion, the autoclave has an integrated system
for
testing the quality of the feed water in the water
storage tank (conductivity):
During the first 2 seconds after start of the cycle, the
autoclave automatically tests the quality of the water
in the water storage tank (52). If the water quality is
somewhat poorer than specified in DIN EN 285, but
is still sufficiently good, then
the lamp
„
WATER“ (9)
will flash
to warn the operator. The program
continues to run, however. If the water quality is not
adequate, the lamp
„
WATER“ (9) will flash, and
the
lamp
„
FAULT“ (10) will glow
. In such case, in
order to protect the instruments and the autoclave,
the program will not start. The operator must replace
the water in the tank by better (for example,
demineralzed) water and press the
„
START“ (7)
button again.
