Schaller Automation VN/87 EMC Series User manual

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Contents
About this guide..........................................................................................................................................................................................3
Safety instructions...................................................................................................................................................................................3
Why use of oil mist detector........................................................................................................................................................................4
The basics- and advantages of our Oil Mist Detectors.............................................................................................................................4
Class Approval........................................................................................................................................................................................4
Engine Protection Partner AS –the largest service partner worldwide! ...................................................................................................5
Repair and service department...................................................................................................................................................................6
Exchange pool (EXP) for all systems..........................................................................................................................................................7
Our Products..............................................................................................................................................................................................9
Visatron VN/87plus .................................................................................................................................................................................9
Visatron VN301plus ................................................................................................................................................................................9
Visatron VN2020...................................................................................................................................................................................10
Visatron VN/87 EMC.............................................................................................................................................................................10
Visatron VN/93......................................................................................................................................................................................11
Wire break resistance for oil mist alarm ....................................................................................................................................................12
Wire break resistance for VN/87 EMC...................................................................................................................................................12
Wire break resistance for VN/87plus.....................................................................................................................................................13
Wire break resistance for VN/93............................................................................................................................................................13
Wire break resistance for VN/2020........................................................................................................................................................14
Alarm diagram for VN/87 EMC, VN/87plus & VN/93..............................................................................................................................14
How to test the alarm system....................................................................................................................................................................15
Maintenance Schedules ...........................................................................................................................................................................16
Maintenance Schedule Visatron VN/87 EMC & VN/87plus....................................................................................................................16
Maintenance Schedule Visatron VN/93.................................................................................................................................................20
Visatron VN2020...................................................................................................................................................................................23
Troubleshooting........................................................................................................................................................................................27
Visatron VN/87 EMC.............................................................................................................................................................................27
Visatron VN/87plus ...............................................................................................................................................................................27
Visatron VN/93......................................................................................................................................................................................27
Visatron VN2020...................................................................................................................................................................................27
Spare Parts ..............................................................................................................................................................................................28
Visatron VN115/87 EMC.......................................................................................................................................................................28
Visatron VN115/87plus .........................................................................................................................................................................29
Visatron VN115/93................................................................................................................................................................................30
Visatron VN116/87 EMC.......................................................................................................................................................................31
Visatron VN116/87plus .........................................................................................................................................................................32
Visatron VN116/93................................................................................................................................................................................33
Visatron VN215/87 EMC.......................................................................................................................................................................34
Visatron VN215/87plus .........................................................................................................................................................................35
Visatron VN215/93................................................................................................................................................................................36
Visatron VN2020...................................................................................................................................................................................37
Visatron VN301plus ..............................................................................................................................................................................38
Part- & Kit Database.................................................................................................................................................................................39

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About this guide
The new Guide for Visatron Oil Mist Detector users has been designed especially for Engine Protection Partner AS, and
will answer your questions concerning the handling, operation, and maintenance of the oil mist detector Visatron series.
Our intention is to make it easier to fault locate, solve technical problems and to understand the basic functionality of the
oil mist detector. Should you encounter any interruption or breakdown of your Visatron oil mist detector during operation,
please find contact details at: www.epp.no.
The repair of OMD device should only be carried out by Engine Protection Partner AS –as we are an authorized repair
center for Schaller Automation. You can expect safe and reliable operation of your OMD when the device is operated in
accordance with this guide.
Please take note of the following:
Please read this OMD handbook thoroughly and acquaint yourself with the correct installation, operation, and
maintenance of your Visatron device.
Use the Visatron devices only for the purpose described in the operating manual.
Incorrect maintenance and handling errors may course possible devices failure or an unsafe operating
environment.
The Visatron devices may only be used by authorized staff.
Safety instructions
The Visatron oil mist detectors are manufactured according to the high-quality standards of Schaller Automation and must
pass stringent factory tests. In order to keep the device in smooth and problem free operation, the user has to take note of
the safety hints and warnings. In the instruction manual they are marked with the following symbols:
CAUTION! Do not ignore the text next to this symbol. Personnel safety can be endangered,
or the device can be damaged.
The marked text contains important information.
WARNING!
Don’t ever ignore or try to restart the engine after a high oil mist concentration alarm or
shutdown of the engine before the cause of overheating has been found and solved!
Otherwise you risk heavy engine damage or an oil mist explosion! When the engine has
been overheated, crankcase doors and other hand hold covers must remain closed for a
minimum of 10 minutes after the engine is shut down!

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Why use of oil mist detector
Oil Mist Detectors protect large Diesel, Gas and Dual Fuel engines of all applications from heavy consequential damage
due to oil mist explosions as a result of overheating of bearings or other moving parts.
All Schaller VISATRON Oil Mist Detection Systems continuously draw the atmosphere from every compartment of the
engine’s crankcase by the use of a suction system. The suction vacuum required is generated by a wear-free air jet pump
within the device, fed by compressed air.
The basics- and advantages of our Oil Mist Detectors
Although different to other systems on the market, this
technology is well proven and accepted by both,
engine makers and ship owners and brings along
some field advantages such as high operations
reliability and low maintenance costs.
The VISATRON® Oil Mist Detection System is
designed to last for the entire engine lifetime.
Surfaces that can generate intensive oil mist in
addition to the crankshaft bearing system include:
Pistons in cylinder liners
Crankshaft bearings such as main
bearings and big-end bearings
Camshafts, their bearings, and cams
Timing gear shafts and their bearings
Gear boxes with their bearings, and in some cases pumps
Guide blocks and paths in crosshead engines
Oil mist in these sliding surfaces can only be monitored by an oil mist detection system, and therefore in the case of an
overheating phenomenon starting in one of them, or a possible piston seizure occurring, an oil mist detection system
should be employed.
Class Approval
SOLAS requirement for oil mist detectors –Engines of 2,250 kW and above or having cylinders of more than 300mm bore
shall be provided with crankcase oil mist detectors, engine bearing temperature monitors or equivalent devices. As per
IACS M10.8 oil mist detection arrangements (or engine bearing temperature monitors or equivalent devices) are required:
For alarm and slow down purposes for low-speed diesel engines of 2,250 kW and above or having cylinders of m0re than
300mm bore for alarm and automatic shutoff purposes for medium- and high-speed diesel engines of 2,250 kW and above
or having cylinders of more than 300mm bore. SCHALLER AUTOMATION developed the VISATRON® oil mist detectors
to meet the IACS UR M10.
Our oil mist detectors are:
Type approved for closed areas
Designed for installation on combustion engines
Approved for environmental category D
Conform to IACS UR M67
For more information about class approval:
https://www.epp.no/visatron-oil-mist-detector-systems/

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Engine Protection Partner AS –the largest service partner worldwide!
Engine Protection Partner AS is a part of Schaller Automation group, and are the main centre for Norway, Svalbard, Jan
Mayen, Faroe Islands, Aaland Islands, Sweden, Finland, Denmark, Iceland, Estonia, Latvia, Lithuania and Greenland. Our
location is Bergen city in Norway. Since the start of 1995, our high knowledge of the technology has been leading us to be
well known name on-board vessels using oil mist detector systems around the world. Engine Protection Partner AS
provides you as a customer total service within sales, technical support, service and repairs. Engine Protection Partner AS
is authorized by Schaller Automation for repairs. The main stock centre ensures you as a customer delivery within 24
hours. Engine Protection Partner AS is certified by Intertek Certification according to DIN EN ISO 9001:2015. EPP is
Schaller’s largest service partner worldwide!
Schaller Automation has for more than 50 years contributed worldwide to achieve a safe operation of large diesel, gas,
and dual fuel engines, brought innovative products to the market, and built a trustworthy partnership with clients. These
qualities have made Schaller Automation to become the market leader in the sector of the protection of large diesel, gas,
and dual fuel engines against crankcase explosions by detection of oil mist. Schaller Automation employs more than 100
engineers, task specialists. A close cooperation with several universities and private research institutes allows Schaller
Automation to bring both together for best result: theoretical and practical know how.

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Repair and service department
Engine Protection Partner AS is authorized by Schaller Automation GmbH &
Co for repairs on component level and is known for high-quality on all stages
with the latest technology in use. Our workshop has become known for quick
repairs and first-class service. All completed repairs go through extensive
testing and are delivered with full documentation. The repair department is
certified according to DIN ES ISO 9001:2015.
The repair department is separated in two departments: electronic repairs and
mechanical repairs. Engine Protection Partner AS ensures always highly
skilled personnel specialized for the different repair processes. In the
electronic repair department, you will find the latest repair technology based
on the POLAR robot fault locators. The repair departments are flexible, so if
you require urgent service/repair of your Visatron oil mist detector –Please
contact us, we always find good solutions!

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Exchange pool (EXP) for all systems
We offer a complete stock of exchange units. You can order
after your specific needs, for example a measuring head or a
complete oil mist detector system. Our systems are based on
the principle “Plug & Play”. This means that it is easy for the
crew to make the installation of different parts in the
exchange pool. Installation documentation and return form
with return labels already filled out by us are following each
exchange pool component to make it easier for you as user
to ensure correct return of the defect components. Normal
return period is 60 days of the defect components. If you face
problems with delay, please contact us, and we will extend
the return period up to 120 days without any extra cost!
NOTE: According to warranty conditions when replacing
only measuring head alternative –you always must
replace maintenance kit for the specific model for
warranty to remain during the next 1-year period. All kits marked with «+» in the end of the part number contains
measuring head and maintenance kit for base plate. Example: 11651EXP+. When choosing complete exchange oil
mist detector, a maintenance kit is not necessary.
VN/87 EMC Measuring Head Exchange Pool
Type:
Product:
Description:
Part no.:
VN 115/87 EMC
Measuring head kit
Measuring head incl. maintenance kit Part no.: 100150
10601EXP+
VN 115/87 EMC
Measuring head - only
Measuring head without maintenance kit
10601EXP
VN 116/87 EMC
Measuring head kit
Measuring head incl. maintenance kit Part no.: 100151
10701EXP+
VN 116/87 EMC
Measuring head - only
Measuring head without maintenance kit
10701EXP
VN 215/87 EMC
Measuring head kit
Measuring head incl. maintenance kit Part no.: 100152
10801EXP+
VN 215/87 EMC
Measuring head - only
Measuring head without maintenance kit
10801EXP
VN/87plus Measuring Head Exchange Pool
Type:
Product:
Description:
Part no.:
VN 115/87plus
Measuring head kit
Measuring head incl. maintenance kit Part no.: 100150
11651EXP+
VN 115/87plus
Measuring head - only
Measuring head without maintenance kit
11651EXP
VN 116/87plus
Measuring head kit
Measuring head incl. maintenance kit Part no.: 100151
11751EXP+
VN 116/87plus
Measuring head - only
Measuring head without maintenance kit
11751EXP
VN 215/87plus
Measuring head kit
Measuring head incl. maintenance kit Part no.: 100152
11851EXP+
VN 215/87plus
Measuring head - only
Measuring head without maintenance kit
11851EXP
VN/87plus Measuring Head Exchange Pool
Type:
Product:
Description:
Part no.:
VN 115/93
Measuring head kit
Measuring head incl. maintenance kit Part no.: 100153
11201EXP+
VN 115/93
Measuring head - only
Measuring head without maintenance kit
11201EXP
VN 116/93
Measuring head kit
Measuring head incl. maintenance kit Part no.: 100154
11401EXP+
VN 116/93
Measuring head - only
Measuring head without maintenance kit
11401EXP
VN 215/93
Measuring head kit
Measuring head incl. maintenance kit Part no.: 100155
10901EXP+
VN 215/93
Measuring head - only
Measuring head without maintenance kit
10901EXP

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VN2020 Measuring Head Exchange Pool
Type:
Product:
Description:
Part no.:
VN 2020
Measuring head kit
Measuring head incl. maintenance kit Part no.: 155004
290044EXP+
VN 2020
Measuring head - only
Measuring head without maintenance kit
290044EXP
VN 2020 EX
Measuring head kit
Measuring head incl. maintenance kit Part no.: 155004
290045EXP+
VN 2020 EX
Measuring head - only
Measuring head without maintenance kit
290045EXP
Complete Oil Mist Detector Exchange Pool
Type:
Product:
Description:
Part no.:
VN 115/87 EMC
Oil mist detector
Complete oil mist detector
10600EXP
VN 116/87 EMC
Oil mist detector
Complete oil mist detector
10700EXP
VN 215/87 EMC
Oil mist detector
Complete oil mist detector
10800EXP
VN 115/87plus
Oil mist detector
Complete oil mist detector
12600EXP
VN 116/87plus
Oil mist detector
Complete oil mist detector
12700EXP
VN 215/87plus
Oil mist detector
Complete oil mist detector
12800EXP
VN 115/93
Oil mist detector
Complete oil mist detector
11200EXP
VN 116/93
Oil mist detector
Complete oil mist detector
11400EXP
VN 215/93
Oil mist detector
Complete oil mist detector
11900EXP
VN 2020
Oil mist detector
Complete oil mist detector
155000EXP
VN 2020 EX
Oil mist detector
Complete oil mist detector
155001EXP
For more information about our Exchange Pool:
https://www.epp.no/exchange-pool/

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Our Products
Visatron VN/87plus
The VN/87plus generation consist of: VN 115/87plus, VN 116/87plus & VN 215/87plus. The
VN87plus is the successor of the VN/87 EMC. The VN/87plus was placed into the market in
2008 and was in production until the system was replaced by the VN2020 and VN301plus in
2020. The VN/87plus was mainly used for 4-stroke engine market, and the system requires a
single tube installation. The VN 116/87plus and VN 215/87plus was mainly used for the 2-
stroke engine market. The VN 215/87plus indicates during a high oil mist concentration alarm
which compartment the oil mist is coming from. The VN 116/87plus indicates from what side
(right or left side of the OMD installation), the oil mist concentration is coming from. The VN
115/87plus is during a high oil mist concentration alarm, indicates that there is coming oil mist
concentration from the engine, without any compartment location of the oil mist.
For the VN/87plus version we supply:
Authorized repair of the complete VN/87plus line
Exchange Pool for all VN/87plus models
All types of spare parts delivered within 24 hours!
Sale of reconditioned units of the VN/87plus line
Technical 24/7 service supply
Authorized service on-site
Service agreement
For more information:
https://www.epp.no/products/vn-87plus-series/
Visatron VN301plus
The VN301plus is based on 50 years of experience in oil mist detection. The
VN301plus system consist of a central unit which up to 20 sensors (master slave
version) can be connected. Each sensor monitors one crankcase
compartment independently and is a standalone unit. When a sensor
is replaced, the surrounding sensors ensure that the crankcase is
monitors under safe conditions.
For the VN301plus generation we supply:
Sale of new complete systems
Sale of reconditioned systems
Spare parts with delivery within 24 hours!
Exchange Pool
Service agreement
Authorized service on-site
Authorized repairs
Technical 24/7 service supply
For more information:
https://www.epp.no/products/visatron-vn301plus/

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Visatron VN2020
The VN2020 system replaces the VN/87plus generation. The system was launched in 2020 and
replaces the VN 115/87plus and the VN/116/87plus. For VN 215 applications the VN301plus is
the successor. The mayor changes on the VN2020 oil mist detector is:
Integrated pressure regulator including water/oil separator
New design of LED panel that ensures safe reading under operation!
New solid connection box, instead of connection socket!
Reset button position directly on the measuring head
New safe position of wire break resistance
New pressure sensor technology, no need for fresh air filters
CANopen and MODBUS RTU signals
For the VN2020 generation we supply:
Sale of new complete systems
Sale of reconditioned systems
Spare parts with delivery within 24 hours!
Exchange Pool
Service agreement
Authorized service on-site
Authorized repairs
Technical 24/7 service supply
For more information:
https://www.epp.no/products/visatron-vn2020/
Visatron VN/87 EMC
The VN/87 EMC generation consist of: VN 115/87 EMC, VN 116/87 EMC & VN 215/87 EMC.
The VN/87 EMC is the successor of the VN/79 & VN/82 generations. The VN/87 was placed into
the market in 1985 and was in production until the system was replaced by the VN/87 EMC in
1998. The VN/87 EMC was then replaced by the VN/87plus in 2008. The VN 115/87 EMC was
mainly used for the 4-stroke engine market and the system requires a single tube installation.
The VN 166/87 EMC & VN 215/87 EMC was mainly used for the 2-stroke engine market.
For the VN/87 EMC generation we supply:
Authorized repair of the complete VN/87EMC line
Exchange Pool for all VN/87 EMC models
All types of spare parts delivered within 24 hours!
Sale of reconditioned units of the VN/87 EMC line
Technical 24/7 service supply
Authorized service on-site
Service agreement
For more information:
https://www.epp.no/products/visatron-vn-87-emc-series/

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Visatron VN/93
The VN/93 generation consist of: VN 115/93, VN 116/93 & VN 215/93. The VN/93 generation
did not replace any of our other oil mist detector generations but was a supplement to the
other systems. The VN/93 generation was launched into the market in 1997 and production
line stopped in 2019. It is easy to identify the VN/93 generation as this is the only oil mist
detector by Schaller Automation that was not in a grey, metallic colour, but white.
VN 115/93 during a high oil mist concentration alarm is indicating that there is oil mist
concentration inside the engine. VN 116/93 indicates which side of the installation the oil mist
concentration is located in the engine. VN 215/93 indicates which compartment of the engine
the high oil mist concentration is located in.
For the VN/93 generation we supply:
Authorized repair of the complete VN/93 line
Exchange Pool for all VN/93 models
All types of spare parts delivered within 24 hours!
Sale of reconditioned units of the VN/93 line
Technical 24/7 service supply
Authorized service on-site
Service agreement
For more information:
https://www.epp.no/products/visatron-vn-93-series/

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Wire break resistance for oil mist alarm
Important information:
All Visatron oil mist detectors are equipped with wire break resistance
for oil mist alarm. The wire break resistance is a set resistance value
for the oil mist alarm and are connected between pin 7 & 8 and pin 15
& 16. It is important to make sure that the wire break resistance is
correct according to the required resistance for the alarm shut down
function of the engine. If the value is not correct according to required
wire break resistance value (at the alarm shut down panel) –this may
lead to a situation where you get no shut down or reduced RPM of
the engine during a real high oil mist level alarm!
If you are replacing the complete oil mist detector or a measuring
head with for example an exchange unit –you always need to check
the documented wire break resistance on the “old” device. When you have this information, you need to check that it is the
same wire break resistance value on the new device before starting up the engine. If the wire break resistance is different
between the devices, you can transfer the wire break resistance (2 pc. presented on the backside of the electronic module
placed in the measuring head) from the “old” device to the new device. Always make a proper test of your system when
replacing measuring head or complete oil mist detector!
Wire break resistance for VN/87 EMC

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Wire break resistance for VN/87plus
Wire break resistance for VN/93

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Wire break resistance for VN/2020
Alarm diagram for VN/87 EMC, VN/87plus & VN/93
Part numbers for wire break resistors:
Part no.:
Value K ohm:
Other information:
100900-33,00K
33,00 K ohm
2 pc. per package incl. instruction fact sheet
100900-33,20K
33,20 K ohm
2 pc. per package incl. instruction fact sheet
100900-24,90K
24,90 K ohm
2 pc. per package incl. instruction fact sheet
100900-10,00K
10,00 K ohm
2 pc. per package incl. instruction fact sheet
100900-3,30K
3,30 K ohm
2 pc. per package incl. instruction fact sheet
For more information about wire break resistance:
https://www.epp.no/exchange-pool/wire-break-resistance/

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How to test the alarm system
ATTENTION: You must stop or slow down the engine during this test! Before starting the
test, perform procedure 1 and 2 of the maintenance schedule for your system. The pipe
system must be clean and if used –siphons to be filled with oil!
It is important to test your oil mist system regularly during maintenance
work and replacement of measuring head or complete oil mist detector.
It is important to ensure that the oil mist detector works according to the
functionality instructions and that the alarm signal from the oil mist
detector reaches the shutdown/reduced RPM function at the engine
during an alarm situation!
How to perform the test:
To perform the functionality test, we offer you the “Test plate kit for functional test of Oil Mist Detector” (Part no.: 11072).
The kit contains a test plate and a test glass 10%.
Below are step-by-step instructions of how to perform the test.
For more information and different test guides:
https://www.epp.no/maintenance/

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Maintenance Schedules
It is always a good solution to do maintenance on your Visatron oil mist detector
system with a view to be precautionary in relation to technical problems. This
eliminates the risk of downtime of the oil mist detector and the engine.
The routine maintenance schedule must be followed as described below. Valid
for gas operation with TPS turbo charger, stationary power plant application and
marine engines.
Maintenance Schedule Visatron VN/87 EMC & VN/87plus
NOTE: All maintenance steps should be performed while engine is stopped!
What to do:
Interval:
Procedure 1
Check the negative pressure with u-tube manometer or digital
manometer. Adjust if necessary! Setting level is 60,00 mmH2O!
Replace the sintered bronze air filter/fresh air filter (Part no.: 10042) in
the measuring head.
Clean the fresh air bores in the measuring head. Use the cleaning needle
(Part no.: 10135).
Clean both infrared sensor glasses in the measuring head with cotton
pins and technical alcohol.
Every month
Procedure 2
Replace filter in pressure regulator (Part no.: 100170).
If you have a water separator:
Replace filter cartridge of water separator.
Every 4 months
Procedure 3
Replace complete service kit on OMD. Clean the inside & outside of base
plate.
Check performance of pressure regulator- replace parts if necessary!
Clean suction pipes/ pipe system and siphon blocks with compressed air!
Yearly
Procedure 4
Replace measuring head or complete oil mist detector with a spare unit.
Use our Exchange Pool Service (ExP) for this procedure!
Replace complete service kit on OMD. Clean the inside & outside of base
plate.
Check performance of pressure regulator- replace parts if necessary!
Clean suction pipes/ pipe system and siphon blocks with compressed air!
Check sampling funnels/pipe system.
If your system has siphon blocks:
Replace rubber inserts and o-rings in siphon blocks (Part no.:
10095/360106 & 365287).
If you are ordering a complete exchange oil mist detector unit, there is no
need to replace maintenance kit for base plate.
Every 4 years

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Procedure 1:
Procedure 2:
1. Close the air pressure
2. Hold the filter cage in one
hand and pull the blue tab
down horizontally with your
thumb.
3. Turn the filter cage
clockwise and pull out
downwards
4. Unscrew the black
plastic disc and remove the
dirty filter
5. Screw in the new filter
counter-clockwise and
make sure that it is
aligned for installation
6. Reinstall the filter cage
7. Install the quick
connection
8. Fill in slacked water in
the u-tube manometer
9. To the middle line
10. Install the u-tube
manometer
11. Adjust the air
pressure to 60.00
mmWC.
12. Disconnect the u-tube
manometer and install the
plug for inspection cover
1. Check the negative
pressure with a u-tube
manometer. Adjust if
necessary! Setting level is
60,00 mmWC!
2. replace the sintered
bronze air filter/fresh air
filter (part no.: 10042)
3. Clean the fresh air
bones in the measuring
head. Use the cleaning
needle (Part no.: 10135)
4. Clean the infrared
sensor glasses at the left
and the right side inside
the measuring head. Use
cotton sticks (Part no.:
10036) and technical
alcohol (Part no.: 10035)

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Procedure 3:
1. Stop the engine and
reduce the incoming air
pressure
2. Disconnect the RESET
task connector
3. dismount the measuring
head
4. disconnect the
connection case
5. Change the small seal
(Part no.: 10206)
6. Change the valve box seal
(Part no.: 10049)
7. Reconnect the connection
case to the base plate
8. unscrew the vibration
plate
9. change the upper and
lower elastic mounting
system (Part no.: 10018 &
10019)
10. change the flexible
bellows (Part no.: 10023)
11. reinstall the vibration
plate to the base plate
12. change the measuring
head seal (Part no.: 10022)
13. reinstall the measuring
head at the vibration plate
14. open the inspection
cover
15. change the scavenging
air filter (Part no.: 10042)
16. Change the seal for
inspection cover (Part no.:
10010/10166)
17. clean the infrared
sensor glasses with cotton
sticks and alcohol (Part no.:
10036 & 10035)
18. clean the bores with
cleaning needle (Part no.:
10135)
19. change the screw plug
seal ¼” for inspection cover
(Part no.: 10082)
20. close inspection cover
21. unscrew the plugs at
the connection case
22. change the screw plug
seal ½“ (Part no.: 10209)
23. check the heating
element if it is hot. If cold –
replace!
24. Check all leaders in the
main socket. If bad
condition –replace! (Part
no.: 10033)

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Procedure 4:
1. Stop the engine and
remove the measuring
head.
2. Clean the inside and
outside of the base plate
and replace all the parts
in the maintenance kit
part no.: 100150.
3. Install the new
exchange measuring
head. When starting up
the OMD device, please
check the negative
pressure and adjust if
necessary! See
procedure 1. Make final
test of the system to
ensure that oil mist
detector operation is
safe.

20
Maintenance Schedule Visatron VN/93
The routine maintenance schedule must be followed as described below. Valid for gas operation with
TPS turbo charger, stationary power plant application and marine engines.
NOTE: All maintenance steps should be performed while engine is stopped!
What to do:
Interval:
Part kit:
Procedure 1
Check the negative pressure with u-tube manometer
or digital manometer. Adjust if necessary! Setting
level is 60,00 mmH2O!
Replace the sintered bronze air filter/fresh air filter
(Part no.: 10042) in the measuring head.
Clean the fresh air bores in the measuring head. Use
the cleaning needle (Part no.: 10135).
Clean both infrared sensor glasses in the measuring
head with cotton pins and technical alcohol.
Perform functional test with test glass kit.
Every 3
months or
2 000
operating
hours.
(whatever
comes first)
Test glass kit –
Part no.: 11072
Procedure 2
Replace filter in pressure regulator (Part no.: 100170).
If you have a water separator:
Replace filter cartridge of water separator.
Every 6
months or
4 000
operating
hours.
(whatever
comes first)
Procedure 3
Replace complete service kit on OMD. Clean the
inside & outside of base plate.
Check performance of pressure regulator- replace
parts if necessary!
Clean suction pipes/ pipe system and siphon blocks
with compressed air!
Check scavenging air outlet behind the control cover
manually (low-right) by feeling the air stream.
Every 12
months or
8 000
operating
hours.
(whatever
comes first)
Maintenance kit
VN115/93 –
100153
Maintenance kit
VN116/93 –
100154
Maintenance kit
VN215/93 –
100155
Procedure 4
Overhaul the complete oil mist detector system. This
procedure is to be carried out by authorized
service personnel!
Replace complete service kit on OMD. Clean the
inside & outside of base plate.
Check performance of pressure regulator- replace
parts if necessary!
Clean suction pipes/ pipe system and siphon blocks
with compressed air!
Perform functional test of entire oil mist detector
system with smoke generator (Part no.: 10353 &
10097) or smoke test (Part no.: 151780).
Every 24
months or
16 000
operating
hours.
(whatever
comes first)
Maintenance kit
VN115/93 –
100153
Maintenance kit
VN116/93 –
100154
Maintenance kit
VN215/93 –
100155
Procedure 5
Replace complete oil mist detector or measuring head
with an exchange unit.
Replace complete service kit on OMD. Clean the
inside & outside of base plate.
Check performance of pressure regulator- replace
parts if necessary!
Clean suction pipes/ pipe system and siphon blocks
with compressed air!
If you are ordering a complete exchange oil mist detector
unit, there is no need to replace maintenance kit for base
plate.
Every 48
months or
32 000
operating
hours.
(whatever
comes first)
Maintenance kit
VN115/93 -
100153
Maintenance kit
VN116/93 -
100154
Maintenance kit
VN215/93 –
100155