COMINOX STERILCLAVE 18 Series User manual

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SERVICE MANUAL
FOREWORD
The present operating instructions ARE NOT integral to the unit. The instructions
are only to be supplied to qualified and specialised technicians liable to ordinary
service and unit repairing. Technicians or operators liable for the unit installations
are to be authorised in writing by COMINOX.
Any operator or technician is liable to read the operating instructions and strictly
comply with its instructions and information as COMINOX is not liable at all for any
damage to people or things or to the unit, should the operator not comply with the
hereby described general operating conditions.
Such instructions are confidential and the customer is liable not to disclose any
information. What is more such operating instructions and its annexes can not be
changed, tampered, modified, violated, copied or sold anybody without COMINOX
approval.
SERVICE MANUAL
AUTOCLAVE
Sterilising
STERILCLAVE 18/24
Document Code: SCG04824
COMINOX
Via G. Viganò, 7
20048 CARATE BRIANZA
Milano (Italy)
Phone: [phone]
Fax: [phone]
www.cominox.com
e-mail: [email protected]
The present document belongs to COMINOX. It can not be copied or sold to anybody without COMINOX informed approval.
Mod.
18 S
18 B
18 BHD
Mod.
24 S
24 B
24 BHD

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SERVICE MANUAL
INDEX
FOREWORD......................................................................................................1
INDEX ................................................................................................................2
Reference numerical index.............................................................3
Reference alphabetical index .........................................................3
SIGNALLING .....................................................................................................5
Cooling Stop...................................................................................5
Check water quality........................................................................6
Check automatic filling ...................................................................6
Waste water maximum level ..........................................................7
Open door or door not locked ........................................................7
Manual stop alarm..........................................................................8
Power missing................................................................................8
Printer not ready ............................................................................8
ALARMS............................................................................................................9
Insufficient water level....................................................................9
Poor water quality ........................................................................10
Chamber level alarm ....................................................................10
Triac alarm ................................................................................... 11
Insufficient steam ......................................................................... 11
Pressurisation alarm ....................................................................12
Over-temperature alarm...............................................................12
Insufficient vacuum alarm ............................................................13
Fractioned vacuum alarm.............................................................13
Level probe alarm ........................................................................13
Over-temperature sterilisation temperature band.........................14
Under-temperature sterilisation temperature band.......................14
Lost data alarm ............................................................................15
Alarm code list .............................................................................15
CONTROLS OR ADDITIONAL ADJUSTING ..................................................16
Empty or not-well readable display ..............................................16
Level probe control.......................................................................16
Door adjusting ..............................................................................16
Water in the tank after the cycle...................................................17
Poor drying...................................................................................17
Pressure increasing too slowly.....................................................17
Vacuum Pump..............................................................................18
Water self drain and direct drain KIT (OPTIONAL) ......................18
The printer does not print .............................................................19
Printer KIT (OPTIONAL) ..............................................................19
Water automatic drain does not work...........................................21
Steam loss from the safety valve .................................................21
DIAGRAMS AND WIRINGS ............................................................................22
Logic electronic motherboard .......................................................22
Logic motherboard electric wiring 33............................................23
Power electronic motherboard .....................................................24
Power motherboard electric wiring 34..........................................25
Electric wiring 18S - B - BHD / 24S - B ........................................26
Electric wiring 24BHD ..................................................................27
Hydraulic wiring 18S - B - BHD / 24S - B.....................................28
Hydraulic diagram 24 BHD...........................................................29

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SERVICE MANUAL
Reference numerical index
Reference alphabetical index
03, power supply cable.................................................................................. 8, 16
05, metering funnel...............................................................................................9
06, access keys............................................................................................. 5, 22
08, tray holder ......................................................................................................9
09, chamber .................................................................. 5, 9, 10, 11, 12, 14, 17
10, clean water tank ..................................................................9, 10, 18, 28, 29
11, waste water recovery tank ......................................................... 7, 22, 28, 29
12, safety valve .................................................................................... 21, 28, 29
13, cut-out switch .......................................................................................... 8, 16
14, filler............................................................................................ 9, 10, 28, 29
15, air sterilisation filter......................................................................... 17, 28, 29
16, door .................................................................................. 5, 7, 9, 11, 13, 16
17, safety thermostat.............................................................................11, 26, 27
18, printer door ...................................................................................................19
19, coil covering grid ............................................................................................9
20, drain filter .............................................................................................. 13, 17
21, chamber probe ........................................................................................ 9, 10
24, clean water drain tap ............................................................................. 28, 29
25, dirty water drain tap.......................................................................... 7, 28, 29
26, printer ...................................................................................................... 8, 19
29, water self drain .......................................................................... 6, 10, 18, 21
30, direct waste drain .................................................................................... 7, 18
31, chamber seal...................................................................................11, 13, 16
32, fuses....................................................................................8, 16, 19, 26, 27
33, logic motherboard.................................................................... 20, 22, 23, 24
34, power motherboard ........................................................... 10, 11, 19, 24, 25
35, water drain pump........................................................ 10, 24, 26, 27, 28, 29
36, closing micro-switches ............................................................................ 7, 22
37, unlocking tool ............................................................................................... 11
38, transducer ......................................................................... 11, 14, 22, 28, 29
39, temperature probe...........................................................................11, 12, 14
40, inspection plugs..................................................................................... 12, 14
41, vacuum pump............................................................. 13, 18, 26, 27, 28, 29
42, fans ..........................................................................................11, 13, 26, 27
43, level probes ..................................................................................................16
46, water self charge pump .................................. 6, 18, 21, 24, 26, 27, 28, 29
A
access keys 06.............................................................................................. 5, 22
air sterilisation filter 15.......................................................................... 17, 28, 29
C
chamber 09 ................................................................... 5, 9, 10, 11, 12, 14, 17
chamber probe 21 ......................................................................................... 9, 10
chamber seal 31....................................................................................11, 13, 16
clean water drain tap 24 .............................................................................. 28, 29
clean water tank 10 ...................................................................9, 10, 18, 28, 29
clean water thank 10 ..........................................................................................22
closing micro-switches 36 ............................................................................. 7, 22
coil covering grid 19 .............................................................................................9
cut-out switch 13 ........................................................................................... 8, 16

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D
direct waste drain 30 ..................................................................................... 7, 18
dirty water drain tap 25........................................................................... 7, 28, 29
door 16 ................................................................................... 5, 7, 9, 11, 13, 16
drain filter 20 ............................................................................................... 13, 17
F
fans 42 ...........................................................................................11, 13, 26, 27
filler 14............................................................................................. 9, 10, 28, 29
fuses 32.....................................................................................8, 16, 19, 26, 27
I
inspection plugs 40...................................................................................... 12, 14
L
level probes 43...................................................................................................16
logic motherboard 33..................................................................... 20, 22, 23, 24
M
metering funnel 05................................................................................................9
P
power motherboard 34 ............................................................ 10, 11, 19, 24, 25
power supply cable 03................................................................................... 8, 16
printer 26 ....................................................................................................... 8, 19
printer door 18 ....................................................................................................19
S
safety thermostat 17..............................................................................11, 26, 27
safety valve 12 ..................................................................................... 21, 28, 29
T
temperature probe 39............................................................................11, 12, 14
transducer 38 .......................................................................... 11, 14, 22, 28, 29
tray holder 08 .......................................................................................................9
U
unlocking tool 37 ................................................................................................ 11
V
vacuum pump 41.............................................................. 13, 18, 26, 27, 28, 29
W
waste water recovery tank 11 .......................................................... 7, 22, 28, 29
water drain pump 35......................................................... 10, 24, 26, 27, 28, 29
water self charge pump 46 ................................... 6, 18, 21, 24, 26, 27, 28, 29
water self drain 29 ........................................................................... 6, 10, 18, 21

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SIGNALLING
Signals and signalling are messages which in the majority of cases ask for a simple
correction or control operation by the user. Alarms ask for service or informs
about the presence of a possible failure.
When enabled, they are displayed on the display, followed by a sound running for 30
seconds. To reset the signalling or the alarm, it is necessary to use one of the
access keys 06 and then press the key STOP.
The “COOLING STOP” and “CHECK WATER QUALITY” signals are followed by a
sound and do not need any reset through the key STOP.
Signalling / Cause / Remedy
Cooling Stop
It signals that the chamber 09 temperature is not suitable to start the unit up or to
keep the cycle running (refer back to chapters START-UP, FOLLOWING
STERILISATION CYCLES and VACUUM TEST).
The unit displays such a signalling in STAND-BY or after starting a cycle and the
unit is stopped during the pre-vacuum phase. Generally such a signalling is
affecting the unit operation when different operating cycles close to each other
are started, that is one after the other with no time for the unit chamber to cool
down.
Under such conditions, it is simply necessary to let the chamber cool down.
To speed up cooling, it would be advisable to open the unit door 16 ,
otherwise it would take a longer time for the unit to cool down. To open the door,
press the key STOP twice, with one of the two key in the socket and wait for a few
seconds until pressure inside the chamber decreases as to allow the unit door to be
opened.
When the door is closed, the operating cycle will be automatically repeated
when the admitted temperature is reached.
Once opened the door, it is necessary to recover the operating cycle and
start the cycle once more.
COOLING STOP

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Check water quality
Such a signalling is only present on any model fitted with a water demineralisation
unit (OPTIONAL). Under such conditions, the unit is fitted with a conductivity meter
on water coming from the demineralisation system.
Such a signalling is released during STAND-BY, only when the unit is fitted with
the optional demineralisation unit and the water self drain 29 is programmed, in
the Bconfiguration from the water system (refer to the OPERATING AND
SERVICE INSTRUCTIONS, chapter CONNECTIONS) and set on the
switchboard: SELF-FILLING = 1. It signals that the water conductivity value,
inlet through the demineralisation external unit, overcame the optimum level but
it is still acceptable.
· Oneormore operating cyclescan bestarted onthe autoclave butit isadvisable
tofollowinstructionsinthe“INSUFFICIENTWATERQUALITY”alarm,asthetriggering
of a second alarm will stop the unit.
ATTENTION: if the water conductivity increases, it means that mineral salts
presence increased too, water will NO LONGER be compliant.
Check automatic filling
Such a signalling is only present on unit models fitted with water self charge 29
(OPTIONAL) both fed from the mains or through an external tank.
Such a signalling is released in STAND-BY, only when the water self charge was
fitted and programmed (refer back to OPERATING AND SERVICE
INSTRUCTIONS, chapter CONNECTIONS).
CHECKAUTOMATIC
FILLING
CHECKWATER
QUALITY
(B)
If the (A) configuration is set, it is necessary to
fill or replace the distilled or demineralised water tank and
check that the difference in height between the unit and
the external tank accounts for or it is lower than 100 cm;
ATTENTION: The constant pump dry operation affects
its operating lasting time and dramatically reduces its
operating life.
Check that theloadingpipe is notbentorclogged;
If the problem can not be solve, check that the
water self charge pump 46 is working.
If the (B) configuration is set, check the water
supply tap is opened and that the water supply pressure
is higher than the minimum pressure prescribed by the
manufacturer of the installed demineralisation system.
In both cases, it is necessary to check:
- that all connections are correctly connected;
- that no pipes are not fitted, leaking or clogged.
Ifthe problem cannot besolved, itpossibly means
that the solenoid valve EV7 must be replaced.
(B)
(A)
46
EV7
29
29
29

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Waste water maximum level
It signals that the waste water recovery tank 11 is full and must be emptied.
The signal is released at the cycle start-up.
Emptythetank (refer backto OPERATINGAND SERVICE INSTRUCTIONS,
chapter INSTALLATION, description TANK SELF DRAIN).
ATTENTION:theliquid temperaturecanreach80°Cand theliquidcanbeinfected.
Dispose the liquid according to the regulations in force in each single country.
If the direct waste drain 30 is programmed, check the correct connection
and that the pipe is not bent or clogged.
If, after emptying the tank, the signal is still on, check:
- level probe as it could have been dirtied by algae or scales depending on water
stagnating in the tank and leading to a false signal (refer back to the LEVEL PROBE
CHECK);
-theprobeand unit grounding,as theunit operating dependson thecorrect grounding
connection.
Duringlongdowntimes,completely empty thetanks andclean with acleaning solution
(70% water and 30% alcohol). Such a solution should NOT at all be used to start
a cycle, therefore rinse before any further operation.
The waste water recovery tank can be filled without disassembling any unit part,
simplyconnectingthe dirty water drain tap 25 andloadingfluid under alight pressure,
for example keeping the fluid container higher than the unit. It is possible to fill the
tank removing the panelling as well as the upward pipes and hoses.
Open door or door not locked
It signals that the door 16 was not correctly closed.
The signal is released when you try to start a cycle and the handle is not com-
pletely blocked. Under such conditions, the unit can not start.
Well close the door before starting a cycle up.
If the signal can not be stopped, even though the door is well closed, it
means that one of the closing micro-switches 36 is not correctly excited or it is bro-
ken, therefore check that:
- the micro-switches do not exhibit any loosen clamping nuts;
- the bar is not bent, out of its seat, or loosen;
- the micro-switch contacts are live, check with a tester;
- there is no clogging or dirt built-up next to the bar-micro-switch contact
-connecting cablesbetweenthe doorandthe unitareoperating andwellconnected.
ATTENTION: to check which of the two micro-switches is generating the signal,
check:
- if the sound alarm immediately starts when the door is closed, it means that the
micro-switch which is not operating is the micro-switch on the bottom inside the unit;
- if the sound alarm only starts after a few seconds, with a short delay if com-
pared to the door closing, it means that the micro-switch which is not operating is the
micro-switch inside the door itself.
It is possible to access the internal micro-switch, by removing the unit from any
furnishing unit as well as it covering.
It is possible to access the door micro-switch as follows:
- remove the 4 bolts external to the door 16 disk;
- remove the handle;
- remove the plastic part;
- check that the stud on the reel head correctly pushes and presses the micro-switch
bar and it is not misaligned.
WASTEWATER
MAXIMUM LEVEL
OPEN DOOR OR
DOOR NOT LOCKED
25
(Mod. 24)
(Mod. 18)

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SERVICE MANUAL
Manual stop alarm
It signals that during the cycle start-up, the STOP key was pressed before the natu-
ral cycle conclusion.
The signal is released during operation and the unit is stopped to inform the user
that the load is NOT STERILE.
As it is not a failure but a forced cycle stop, released by the operator, NO
specific intervention is required. It is necessary to consider the load NON STERILE
and re-start a new sterilisation cycle.
ATTENTION: It is always not advisable to manually STOP the unit, if not absolutely
necessary. In fact if the unit already concluded the pressurisation or the fractioned
vacuum phase, the internal material can be wet or extremely wet and therefore it
could be difficult for the unit to re-start the cycle. Therefore dry well the materials and
replace the envelopes.
Power missing
It signals that during a cycle, the unit was cut from the main power supply.
Thesignal isreleased when thepower supplyisrecovered. On thedisplay,when
the unit is connected to the power supply, the message relating to the missing
voltage is displayed.
Should the unit be cut from the main power supply when the alarms are on, the
last alarm will be displayed on the display.
According to the signal displayed on the display, it is possible to come to the
conclusion whether the unit, despite power missing, entirely or partially came to the
end of the sterilisation cycle.
Power can be missing for the following reasons:
- pressure error at the cut-out switch 13 level
- power is entirely missing from the power supply or a magneto-thermal fuse is bro-
ken;
- the power supply cable 03 is not correctly fitted or the cable is damaged;
- power fuses 32 are broken or oxidized.
Printer not ready
It signals that paper is missing or that the printer door was not correctly closed.
A signal is release on a cycle starting when the printer 26 (OPTIONAL) is in-
stalled and set.
Recover thecorrect operatingconditions(refer toback toOPERATING AND
SERVICE INSTRUCTIONS, to the chapter PRINTER).
If the signal is still on, check
- that the printer door is perfectly closed;
- that the power supply cable are duly connected to the printer
ATTENTION:foramore technical and detailedexplanation,referto chapter PRINTER
INSTALLATION(OPTIONAL)
MANUAL STOP
ALARM
POWER MISSING
......................................
PRINTER
NOT READY

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SERVICE MANUAL
INSUFFICIENT
WATERLEVEL
ALARMS
Differently from any signal, alarm STOP the unit, therefore once solved the problem
which provoked the alarm and reset the alarm itself pressing the key STOP, it is
necessary to switch the unit ON once more and the start a new cycle.
The load in the autoclave during the cycle interrupted by the alarm is to be consid-
ered NON STERILE.
Alarm / Cause / Remedy
Insufficient water level
It informs that distilled or demineralised water is missing in the clean water tank 10 .
When water is missing in the tank, the led MIN on the keyboard is switched on thus
triggering the alarm.
If the alarm is triggered when the cycle is started up, fill the tank or the
tank used for the water self filling (refer back the OPERATING AND SERVICE IN-
STRUCTIONS, chapter SETTING, SELF CHARGE and CLEAN WATER TANK)
The tank filling, with no self charge can be enforced as follows. Simply loosen and
remove the filler 14 cover and fit in the supplied metering funnel 05 (only use suit-
able distilled or demineralised water).
If a filling is enforced when the unit is on or in STAND-BY, the MAX and MIN le don
the control board allow to check the water level. A sound signal lasting for 1 second
follows the LED MAX switching on to specify that the tank is full. If no sound signal is
heard, excess water comes out from the filler.
The tank filling, with an automatic cycle (OPTIONAL) can be enforced as follows. It
simply arrives when water is missing,. It is necessary to check that there is enough
water in the external filling tank. Should water be missing, on the display the signal
CHECK SELF CHARGE will be displayed, and therefore follow instructions referring
to the signalling itself.
If the alarm was displayed during the cycle, fill the tank and move for-
ward according to the instructions given in the case of “INSUFFICIENT STEAM”.
ATTENTION: the unit doses water in the boiler, to generate steam, through a pump,
until water touches the chamber probe 21 . If during filling water is not enough, it
means that water or steam is coming out from the valves, from the chamber or from
the pipes. Under such conditions, water leaks and builds up under the unit.
Should no cause be detected, it is necessary to check the chamber probe as possi-
bly it does no longer read the water level inside the chamber.
To check the probe correct operation, it is necessary:
- to open the door 16 and remove the entire chamber 09 load;
- to remove the tray holder 08 ;
- to remove the coil covering grid 19 loosening the relating screw;
- reassemble follow the reversed order, that is horizontally turn the grid with its seal.
- switch the unit in STAND-BY;
- press at the keys STOP and at the same time, as to manually start the loading
pump, which should be stopped within a few seconds, that is when the demanded
water is let in and touches the probe.
The probe could be dirty or the power supply cable or the grounding cable be failing.
Under extreme conditions, when a special cycle was launched, with 3
fractioned vacuum peaks and with a rather heavy porous load, the minimum fore-
castlevelcould be nolonger enough. Tryto reduce theloador simplyuse2 fractioned
vacuum peaks.
Another cause which can generate a similar alarm can depend on the elec-
tronic board. In the case of failure, replace the board.
21
09
16

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SERVICE MANUAL
Poor water quality
Such an alarm is present only on unit where a water demineralisation unit is fitted
(OPTIONAL). Under such conditions, the unit is fitted with a conductivity meter of
the water coming from the demineralisation unit.
Under such conditions, the unit signals that the water conductivity level overcame
an acceptable level and stops the automatic filling.
The alarm is released when the cycle is started (refer back to the OPERATING
ANDSERVICE INSTRUCTIONS, chapter SIGNALLING, CHECK WATER QUAL-
ITY) only when the demineralisation unit is fitted and the water self drain 29 cycle
as programmed in the B configuration to the water main supply system (refer
back to the OPERATING AND SERVICE INSTRUCTIONS, chapter CONNEC-
TIONS) and set on the control panel SELF FILLING = 1.
It signals that the water conductivity value, filled through the external deminerali-
sation unit, is NO LONGER acceptable. Before such an alarm, the message
CHECK WATER QUALITY was already displayed on the display.
Change the self filling cartridge used for the demineralisation of water from
the mains water supply, in compliance with the manufacturer’s instructions. It is ad-
visable, once replaced the cartridges, to rinse the clean water tank 10 .
Should it not be possible to start the unit, once replaced the cartridge in the
waterdemineralisation unit, itis possible tore-start the unitchanging the SELFFILL-
ING programming to 1 and manually filling the tank through the filler 14 . Under such
conditions, water is not controlled and therefore check its features beforehand.
Chamber level alarm
It informs that the necessary time was overcome to recover the correct water level
within the chamber 09 .
The alarm is displayed when the chamber probe 21 does not read within the
allocated correct time the presence of water within the chamber.
Check once more the machine position (refer back to OPERATING AND
SERVICE INSTRUCTIONS, chapter INSTALLATION ).
If the problem can not be solved, check that:
- The water self charge pump 35 and the solenoid valve EV1 manage to pump water
inside the chamber 09 ;
- EV1 solenoid valve, whose reel could be failing;
- The water drain pump 35
- Fuse F3 on the power motherboard 34
- What specified in the case of POOR WATER LEVEL
POOR
WATERQUALITY
CHAMBER LEVEL
ALARM
14
09 (Mod. 24)
14
09
21
(Mod. 18)
21
35
EV1
(B)
29