Arjo Ninjo User manual

6001313802_2EN • 12/2020
TECHNICAL MANUAL
Ninjo

The model name and serial number should always be provided when ordering
spare parts or during queries per telephone or written correspondence:
Serial number of the machine:
……………………………………………………
Machine model:
……………………………………………………
Design Policy and Copyright
® and ™ are trademarks belonging to the Arjo group of companies.
© Arjo 2020.
As our policy is one of continuous improvement, we reserve the right to modify designs without
prior notice. The content of this publication may not be copied either whole or in part without the
consent of Arjo.
NOTE
Blue text indicates changes compared to previous manual.
Check that the latest updates have been implemented
Check if there are any Field Safety Notices or
Technical Advisory Notices (FSN or TAN)
that have been published since the last service.
Field Safety Notice: information notice
informing of what actions must be taken in a
Field Safety Corrective Action.
Technical Advisory Notices are divided in three
classes:
• A: Field Safety Corrective Action (FSCA)
Information about what technical
interventions to be made in order to remedy
safety related issues described by the Field
Safety Notice (FSN)
• B: Information about non-safety related
changes
• C: Information about administrative issues
The check must be done to keep the product up to
date according to safety and product improvements.
Title: Maintenance method for battery spares
Products affected: ACS900
Countries or Regions
affected:
܈All markets
or
܆Continental Europe ܆North America ܆UK/I ܆Aus./New Zeal.
܆Central & Eastern Europe ܆Latin America
or
܆Specific countries: _ __
Function targeted: ܆Sales ܈Service ܈Rental ܆Other:____________
Reason for TAN:
܈Instruction of repair/replacement
܆Part related
܆Order related
܆Field Safety Action ܆Field Action (non-Safety)
܆Product modification
܆Activity upon customer request
܆Other: ___________
Example of a published Technical
Advisory Notice C

3
Contents
PREFACE...........................................................................................................................6
1 SAFETY PRECAUTIONS..............................................................................................7
1.1 Important..............................................................................................................7
1.2 In an emergency..................................................................................................8
1.3 Product liability.....................................................................................................8
1.4 Isolator switch......................................................................................................8
1.5 Attention symbols.................................................................................................8
2 PRESENTATION ...........................................................................................................9
2.1 Intended use of the machine ...............................................................................9
2.2 General................................................................................................................9
2.3 Function...............................................................................................................9
2.4 P&I diagram.......................................................................................................10
2.4.1 With ventilator .....................................................................................10
2.4.2 Without ventilator ................................................................................11
2.4.3 Safe and simple ..................................................................................11
2.4.4 Simple service and installation............................................................11
2.5 Cooling...............................................................................................................12
2.5.1 Cooling with ventilator (optional).........................................................12
2.5.2 Internal cooling (optional)....................................................................12
2.6 Inspection hole...................................................................................................12
2.7 The programs ....................................................................................................12
2.7.1 Example of program sequence ..........................................................13
3 SERVICE PROGRAM .................................................................................................14
3.1 Function.............................................................................................................14
3.2 Accessing the service program..........................................................................15
3.3 Operator password (line number 0)...................................................................15
3.4 Checking or changing a numerical value on a line ............................................16
3.5 Quitting the service program..............................................................................16
4 LINE INFORMATION...................................................................................................17
4.1 Line....................................................................................................................17
4.2 Machine-independent variables.........................................................................20
4.2.1 Program version, line 1 .......................................................................20
4.2.2 Serial number, line 2 ...........................................................................20
4.3 Demo mode, line 3.............................................................................................20
 &RQ¿JXUDWLRQ .....................................................................................................20
4.4.1 Temperature scale, line 4....................................................................20
4.4.2 Cooling method, line 5 ........................................................................20
4.5 Program selection lines 6–7 ..............................................................................21
4.6 Dose size...........................................................................................................22
4.6.1 Descaler, line 8 ...................................................................................22
4.6.2 Rinse-aid, line 9 ..................................................................................22
4.6.3 Process agent, line 10 ........................................................................22
4.7 Cooling...............................................................................................................22
4.7.1 Internal cooling, line 13 .......................................................................22

4
4.7.2 External cooling, line 14......................................................................23
4.8 Disinfection ........................................................................................................23
4.8.1 Disinfection temperature, line 15 ........................................................23
4.8.2 Disinfection time, line 16 .....................................................................23
4.8.3 Preheating steam generator, line 17 ...................................................23
4.8.4 Cooling time, line 18 ...........................................................................23
4.8.5 Inactivity, line 19..................................................................................24
4.9 Error statistics, lines 21–33................................................................................24
4.10 Display during operation, line 37 .....................................................................25
4.11 Program statistics ............................................................................................25
4.11.1 Max disinfection temperature, line 40................................................25
4.11.2 Number of programs started, line 41.................................................25
4.11.3 Program time, total, line 42 ...............................................................25
4.12 Function test ....................................................................................................25
4.12.1 Reading inputs, lines 51–57..............................................................25
4.12.2 Control of the outputs, lines 61–70 ...................................................26
4.12.3 Reading temperature, line 75............................................................26
4.12.4 Reading independent temperature, line 76.......................................26
4.13 Calibrating temperature sensors, lines 77–78 .................................................26
4.14 Mix ratio for water, line number 91–95.............................................................27
5 ERROR INDICATORS.................................................................................................28
5.1 Error message ...................................................................................................28
5.1.1 Error codes (must be acknowledged): ................................................28
5.1.2 Information codes (acknowledgement not needed): ...........................28
5.1.3 Handling codes that require action before restarting the machine:.....28
5.2 Acknowledging an error message......................................................................29
5.3 Resetting the machine.......................................................................................29
5.4 During a power failure........................................................................................29
5.5 Table of errors and possible actions ..................................................................30
6 PREVENTIVE MAINTENANCE...................................................................................31
6.1 Periodic maintenance ........................................................................................31
6.1.1 Consumables ......................................................................................31
6.1.2 Service table .......................................................................................32
6.2 General (Item 1).................................................................................................34
6.2.1 Checking electrical cables and connection points (1.1) ......................34
6.2.2 Checking fuses (1.1.1) ........................................................................35
6.2.3 Checking the cooling fan (1.2) ............................................................36
6.2.4 Checking panel labels (1.3) ................................................................36
6.2.5 Checking door lock (1.4) .....................................................................36
6.2.6 Checking item placement sign and quick guide instructions (1.5) ......36
6.2.7 Checking error codes and number of processes (1.6)........................37
6.3 The chamber (Item 2) ........................................................................................37
6.3.1 Checking rotating nozzles (2.1) ..........................................................37
6.3.2 Removing a rotating nozzle (2.1.1) .....................................................37
 &KHFNLQJ¿[HGQR]]OHV...............................................................38
6.3.4 Checking nozzle attachments and hose connections for the nozzles

5
(2.3) ................................................................................................................38
6.3.5 Checking temperature sensors (2.4)...................................................38
6.3.6 Checking door seals and chamber seals (2.5)....................................39
6.3.7 Checking fastening points for goods holder (2.6) ...............................39
 &KHFNLQJWKHRYHUÀRZFRQQHFWLRQ..............................................39
6.3.9 Internal cleaning of the chamber (2.8) ................................................39
6.3.10 Checking door and door springs (2.9)...............................................39
6.4 Process tank (Item 3).........................................................................................40
6.4.1 Cleaning the process tank (3.1) ..........................................................40
6.4.2 Checking level sensors (3.2)...............................................................40
6.4.3 Checking inlet valves (3.3)..................................................................40
6.5 Steam generator (Item 4)...................................................................................41
6.5.1 Checking the steam generator (4.1) ...................................................41
6.5.2 Checking the steam generator function (4.2)......................................41
6.6 Main pump (Item 5)............................................................................................43
6.6.1 Checking the main pump (5.1)............................................................43
6.7 Dosing system (Item 6)......................................................................................43
6.7.1 Checking hoses (6.1) ..........................................................................43
6.7.2 Checking the dosage amount (6.2).....................................................44
6.7.3 Replacing hoses in the dosing pump (6.2)..........................................44
6.7.4 Checking the empty container alarm (6.4) ..........................................46
6.7.5 Checking the check valve (6.5)...........................................................46
6.8 Drainage connection (Item 7) ............................................................................46
6.8.1 Checking drainage connections (7.1) .................................................46
6.9 Ventilator (Item 8) ..............................................................................................46
 5HSODFLQJD+(3$¿OWHU...............................................................47
6.9.2 Checking fan function and connection (8.2)........................................47
6.9.3 Checking check valve function (8.3) ...................................................47
6.9.4 Checking hoses to the ventilator (8.4) ................................................47
6.10 Test run (Item 10) (At each service).................................................................48
6.10.1 Function and leakage check (10.1)...................................................48
6.10.2 Checking panels (10.2) .....................................................................49
7 REPAIRS AND ADJUSTMENT....................................................................................50
7.1 Remove top .......................................................................................................50
7.2 Opening the door in the event of a power failure...............................................51
7.3 Draining the machine.........................................................................................52
7.3.1 Draining the steam generator .............................................................52
7.3.2 Draining the main pump......................................................................52
7.4 Replacement of rotating nozzle .........................................................................53
7.5 Replacing a temperature sensor........................................................................54
7.6 Inspection and calibration of AD for temperature sensor...................................55
7.7 Overheat protection ...........................................................................................55
8 COMPONENT LIST.....................................................................................................57
8.1 Positioning .........................................................................................................57
8.2 Description.........................................................................................................58

6
PREFACE
The user manual describes the design and operation of the
machine and the maintenance for which the user is responsible.
The installation manual describes the machine’s installation. The
technical manual describes necessary information for operators
and maintenance personnel. The information in the manual must
be complied with to ensure safe and error-free operation.
Read the manual before use.
Users must read through the manual before using the machine
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operation of the machine and its safety instructions. Operators and
maintenance personnel must have completed training through the
marketing organization of Arjo.
The information in this manual describes the machine as
dispatched from Arjo. There may be differences due to
customization for customers or countries.
The machine is accompanied by the following documentation:
• Instructions for Use
• Installation manual
• Quick guide
The following documentation is supplied on CD:
• Instructions for Use
• Installation manual
• Quick guide
• Electrical diagrams
The following documentation shall be provided by the sales
company to the end-user on request:
• Technical manual
• Spare parts list
The accompanying Quick guide must be hung up and clearly
visible in the installation area.
$UMRUHVHUYHVWKHULJKWWRFKDQJHWKHVSHFL¿FDWLRQDQGGHVLJQ
without prior notice. The information in this manual was up-to-date
on the date that the manual was issued.

7
1 SAFETY PRECAUTIONS
This machine has a number of built-in safety devices.
To avoid injury, it is highly important not to bypass these safety
devices.
1.1 Important
• Take care when handling the chemical agents used in the
machine. Read the details on the container or contact the
manufacturer for measures if:
࢓– what to do if the substance comes in contact with
eyes or skin or if the vapors are inhaled.
࢓– storage of the packaging and sorting of empty
packaging for disposal.
• The machine must be connected in accordance with the
installation instructions.
• The machine may only be operated by adults.
• Installation and service work must be done by personnel
trained for this machine.
• Never bypass the machine’s door switch under any
circumstances.
• Always connect the equipment via an RCD (residual current
device).
• $OZD\VXVHDJURXQGHGSRZHUVXSSO\IRUWKHÀXVKHU
disinfector.
• Leakage in the system, due to a worn door seal for example,
must be repaired without delay.
• Before repair or service work is done, the personnel
concerned must study the relevant documentation and
service manuals.
• Before welding begins on or close to the machine, all wiring
connected by plugs and sockets must be disconnected from
all circuit boards in the machine.
• The machine must not be hosed down with water.
• Take care when using corrosive detergents.
• Precautions must be taken with hot water and steam.
• Run a program with disinfection before starting servicing
work. If this is not possible, disinfect the machine with
disinfectant before starting servicing work.
• Spare parts must only be obtained from Arjo’s sales
companies.

8
1.2 In an emergency
• Switch off the main switch.
• Close shutoff valves in the water supply line.
1.3 Product liability
This product complies with European Community harmonised
legislation.
$Q\PRGL¿FDWLRQRULQFRUUHFWXVHRIWKHHTXLSPHQWZLWKRXWWKH
approval of Arjo negates Arjo’s product liability.
1.4 Isolator switch
The machine must be equipped with a separate isolator switch
in the feed power supply. The isolator switch must be easily
accessible on a wall close to the machine.
1.5 Attention symbols
There are warnings, instructions, and advice in this manual that
require extra attention. The symbols and designs used are:
Risk of injuries or machine damage.
ESD-sensitive equipment.
Live components.
Hot surface. Risk of injury.
Harmful corrosive substances.

9
2 PRESENTATION
2.1 Intended use of the machine
Flusher-disinfector for emptying, cleaning and disinfecting,
bedpans, urine bottles and other containers for human waste.
To meet the requirements of EN ISO 15883, the items must be
placed in the proper holder, recommended by Arjo.
The customer is responsible for ensuring that an Installation
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the product is put into use.
2.2 General
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circulation goods such as bedpans and urine bottles. In this
context, disinfection means killing vegetative bacteria, fungal
spores and viruses, but not bacterial spores.
2.3 Function
7KHLWHPVDUHFOHDQHGE\ÀXVKLQJZLWKFROGDQGKRWZDWHUWKURXJK
¿[HGDQGURWDWLQJQR]]OHV7KHZDWHULVGUDZQE\DSXPSIURP
the machine tank and fed to the chamber. The waste outlet of
the machine is connected to the normal waste pipe system. The
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ZDWHURU¿OWHUHGFRROLQJDLUIURPDIDQWKHFRROLQJSKDVHFDQEH
eliminated by programming the machine accordingly).

10
2.4 P&I diagram
2.4.1 With ventilator
001403
Figure 1. P&I diagram with ventilator

11
2.4.2 Without ventilator
001404
Figure 2. P&I diagram without ventilator
2.4.3 Safe and simple
The disinfector is fully automated and the control buttons are few
and clearly marked, making operation simple. Through continuous
monitoring of the process, safety and reliability can remain high,
and at the same time, the built-in service program substantially
facilitates troubleshooting and service.
The dosing of descaler, the temperature, and the disinfection time
can all be altered with great precision to suit different conditions.
2.4.4 Simple service and installation
Valves and the electrical equipment are easily accessible for
inspection and service from the front and from above.

12
2.5 Cooling
2.5.1 Cooling with ventilator (optional)
7KHLWHPVFDQEHFRROHGE\XVLQJ¿OWHUHGFRROLQJDLUE\DIDQ
sucking the warm air out from the chamber.
2.5.2 Internal cooling (optional)
Internal cooling takes water from the tank and the standard water
supply.
This method is not recommended according to EN ISO 15883.
2.6 Inspection hole
The inspection hole is located in the front right corner of the
chamber.
Take off the front cover and remove the technical unit using a Torx
T10 screwdriver to access the inspection area.
1
001405
Figure 3. Inspection hole (1)
2.7 The programs
Main program:
P1 Economy program for lightly soiled goods
P2 Normal program for normally soiled goods
Intensive program: The intensive program has a number of
different cleaning phases depending on how soiled the goods are.
P3 Intensive program 1
P4 Intensive program 2

13
P5 Intensive program 3
Program for hard water: Programs P6 to P10 have the same
function as P1 to P5, but are intended for water with a hardness
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rinsing phase before the disinfection phase.
P6 Economy program for hard water
P7 Normal program for hard water
P8 Intensive program 1 for hard water
P9 Intensive program 2 for hard water
P10 Intensive program 3 for hard water
2.7.1 Example of program sequence
The illustration below shows an example of the program sequence
in a normal program.
001406
Figure 4. Example of a program sequence
Program sequence Purpose
01. Cleaning &OHDQLQJRIWKHJRRGVE\ÀXVKLQJZLWK
cold, mixed, and hot water in one or
more phases.
02. Disinfection 7KHÀXVKLQJFKDPEHULVKHDWHGZLWK
steam until the correct disinfection
temperature and the correct time are
reached.
03. Cooling The goods can be cooled with the
ventilator.

14
3 SERVICE PROGRAM
3.1 Function
In the service program, maintenance and service personnel can
set parameters which control the operation of the machine. These
parameters are divided into the following groups:
• Machine-independent settings
• &RQ¿JXUDWLRQ
• Program selection
• Dose size
• Disinfection
• Error statistics
• Program statistics
• Function test
• Activation of inputs and outputs
• Cooling method
The function for changing line information is protected by
authorization codes, so as not to put the operation of the
machine at risk. There are three authorization levels:
• - indicates a line that cannot be changed.
• Level A for users; display only (code 0000)
• Level B for users; change (code 2000)
• Level C for service personnel, change
Note!
You can always view all higher-level program lines without
the access right code for those levels. The code only
protects against changes.
The operator communicates with the service program via the
pushbuttons on the front panel and via the display.
The information in the memory of the machine is structured as
a number of lines, where every line has a two-digit line number
(00 - 99). On every line there is either line information or a control
for a certain function, e.g. to select the required temperature scale.

15
3.2 Accessing the service program
Note!
You must enter your access rights code before you can
change anything in the program. If the numerical value
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cannot be changed or you do not have the access rights
to change it.
Note!
You must be in line number mode to quit the service
program.
Press and hold the and buttons. Then press and hold
the buttons for 10 seconds.
The machine is now in service mode and line numbers appear
on the display.
Enter the service program (keep both buttons pressed
for 10 seconds).
Quit the service program (press the buttons for three
seconds).
Increase line number or numerical value. For rapid
feed, hold the button down.
Decrease line number or numerical value. For rapid
feed, hold the button down.
Shows the value for a line number/saves the numerical
value.
3.3 Operator password (line number 0)
The machine has three authorization levels:
• Level A for users; display only (code 0000)
• Level B for users; change (code 2000)
• Level C for service personnel, change
The code only protects against changes.
The authorization code must be entered in the same way as other
numerical values as described in the next section.

16
3.4 Checking or changing a numerical value on a line
• Press (increase line number) or (reduce line number)
so the display shows the right line number. Holding down the
button scrolls the value up or down for as long as the button
is pressed.
• Press . The numerical value for the line number is shown.
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• To change the numerical value
• If you want to change the numerical value, press
(increase) or (reduce) until the correct value is shown.
Press to store the new numerical value in the memory of
the computer.
• If the numerical value has four digits, the two digits on the left
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• :KHQ\RXKDYH¿QLVKHGSUHVV once more to show the
line number again.
Numerical value as two digits
The line number always appears
to the left on the display
The numerical value appears to
the right on the display
Numerical value as four digits
First change the two digits to the
left…
…and then the two to the right
3.5 Quitting the service program
If there is a numerical value on the display, press to return to
the line number. Press and hold , , and for three seconds.

17
4 LINE INFORMATION
4.1 Line
Line Parameter 6HWWLQJ
basic
6HWWLQJ
range
$XWKRUL]DWLRQ
Lines 1-2: Machine-independent variables
1 Program version N.NN -
2 Serial number WXXXXXX -
Line 3: Demo mode
3 Demo mode 0 See “Demo mode” C
/LQHV&RQ¿JXUDWLRQ
4 Temperature scale 1 1 = °C, 2 = °F BC
5 Cooling method 2 0 = None, 1 = Internal,
2 = External/fan,
3 = fan extended
BC
Lines 6-7: Program selection
6 Program selection button 1 1 1-10 = Program No. BC
7 Program selection button 2 2 1-10 = Program No. BC
/LQHV'RVHVL]H
8 Dose size, descaler 12 0-99 seconds BC
9 Dose size, rinse-aid 0 0-99 seconds BC
10 Dose size, process agent 0 0-99 seconds BC
Line nos. 13-14: Cooling
13 Internal cooling 0 0 = Std, 1 = mixed, 2 = Cold,
3 = Hot
BC
14 Ventilation 120 0-600 seconds BC

18
Line Parameter 6HWWLQJ
basic
6HWWLQJ
range
$XWKRUL]DWLRQ
Lines 15-16: Disinfection
15 Disinfection temperature 91 80–95°C (Note: Celsius only) C
16 Disinfection time 60 0-1,800 seconds C
17 Preheating 50 0-99 0 = switched off C
18 Run time for ventilator after
process
120 0-600 seconds C
19 Inactivity warning 1 0 = Inactive 1 = Active C
Lines 21-33: Error statistics
21 Counter for error code F1 0-99 errors C
24 Counter for error code F4 0-99 errors C
27 Counter for error code F7 0-99 errors C
28 Counter for error code F8 0-99 errors C
29 Counter for error code F9 0-99 errors C
30 Counter for error code F10 0-99 errors C
31 Counter for error code F11 0-99 errors C
33 Counter for error code F13 0-99 errors C
Line 37: Display
37 Display during operation 7 1 = Temp, 2 = A0,
3 = Temp + A0,
4 = Remaining time,
5 = Time+Temp, 6 = A0+time,
7 = A0+Temp+Time
C
Lines 40-42: Program statistics
40 Max. temperature 5–100°C (displayed with
chosen temp scale)
41 Counter for number of
processes
0-99999
42 Counter, operating time 0-99999 h
Lines 51-76: Function test
51 Input 1 - Door closed 0 = open, 1 = closed -
52 Input 2 - Door locked 0 = unlocked, 1 = locked -
53 Input 3 - Leakage sensor 0 = OK, 1 = leakage -
54 Input 4 - Rinse-aid low 0 = OK, 1 = low -
55 Input 5 - Descaler low 0 = OK, 1 = low -
56 Input 6 - Level, C tank 0 = no, 1 = yes -
57 Input 7 - Process agent low 0 = OK, 1 = low -
61 Output 1 - Cold water 0 = off, 1 = on BC

19
Line Parameter 6HWWLQJ
basic
6HWWLQJ
range
$XWKRUL]DWLRQ
62 Output 2 - Hot water 0 = off, 1 = on BC
63 Output 3 - External
ventilator (fan)
0 = off, 1 = on BC
64 Output 4 - Pump, rinse-aid 0 = off, 1 = on BC
65 Output 5 - Pump, descaler 0 = off, 1 = on BC
66 Output 6 - Pressure pump 0 = off, 1 = on BC
67 Output 7 - Steam generator 0 = off, 1 = on BC
68 Output 8 - Pump, process
agent
0 = off, 1 = on BC
69 Output 9 - Unlock door 1->run unlocking sequence BC
70 Output 10 - Lock door 1->run locking sequence BC
75 Read internal temperature Temperature shown with
relevant temp scale
-
76 Read external temperature Temperature shown with
relevant temp scale
-
Lines 77-78: Calibrating temperature sensors (not available for AH1036512)
77 Calibrating internal
temperature
See “Calibrating temperature
sensors”
C
78 Calibrating external
temperature
See “Calibrating temperature
sensors”
C
Lines 81-83: For future use
81 N/A
82 N/A
83 N/A
Line 91–95: Mix ratio for water
91 Filling 1 0 0-100 % C
92 Filling 2 50 0-100 % C
93 Filling 3 100 0-100 % C
94 Filling 4 100 0-100 % C
95 Filling 5 100 0-100 % C