Fault indication VN/93

Fault indication VN/93

Fault indication on LED- display

Click on fault indication link to view maintenance procedure

– Voltage of internal battery too low!

Step 1

     

Replace the measuring head with an exchange unit!

     

Necessary parts used in the fault locating procedure:

Step 1:

Exchange measuring head

**

Replacing of measuring head

**Please check your model description for correct part number under SPARE PARTS”!

– Electronic module defective!

Step 1

     

Replace the measuring head with an exchange unit!

     

Necessary parts used in the fault locating procedure:

Step 1:

Exchange measuring head

**

Replacing of measuring head

**Please check your model description for correct part number under “SPARE PARTS”!

– Electronic module defective!

Step 1

     

Replace the measuring head with an exchange unit!

     

Necessary parts used in the fault locating procedure:

Step 1:

Exchange measuring head

**

Replacing of measuring head

**Please check your model description for correct part number under “SPARE PARTS”!

– Optical sensor dirty!

Step 1

Open the inspection cover

 

clean the infra-red sensor glass on the left side with cotton sticks (P/n.:10036) and technical alcohol (P/n.:10035)

 

clean the infra-red sensor glass on the right side with cotton sticks (P/n.:10036) and technical alcohol (P/n.:10035)

 

     

close the inspection cover!

     

Necessary parts used in the fault locating procedure:

Step 1:

Cotton sticks

10036

Checking negative pressure

Step 1:

Technical alcohol

10035

Checking negative pressure

Step 2

     

Replace the measuring head with an exchange unit!

     

Necessary parts used in the fault locating procedure:

Step 2:

Exchange measuring head

**

Replacing of measuring head

**Please check your model description for correct part number under “SPARE PARTS”!

– Negative pressure/ airflow too low!

Step 1

Turn off the pressure regulator…

 

remove the plug at the inspection cover…

 

install the u- tube manometer…

 

   

turn up the pressure until it reaches 60 mm WC…

     

The LED 14 will stop blinking, and the OMD will go back to “ready” mode.

Step 2

 

Open the inspection cover…

 

replace the scavenging air filter’s (P/n.:10042) and fresh air restrictor’s (P/n.:10992)…

 

close the inspection cover

 

Step 3

 

Open the inspection cover…

 

use the cotton stick (P/n.:10036) and clean the open fresh air bores on the left and right side…

 

close the inspection cover

 

Step 4

Remove the measuring head…

 

check the gasket for measuring head (P/n.:10969). If damaged, replace the gasket…

 

check the flexible bellows (P/n.:10023) If damaged, replace the flexible bellows

 

     

check the flexible bellow for fresh air (P/n.:10975) – replace if necessary!

     

Step 5

 

Disconnect the ejector input…

 

clean the unit with clean spray for OMD…

 

reinstall the ejector input

 

Step 6

 

Disconnect the ejector output…

 

clean the unit with clean spray for OMD…

 

reinstall the ejector output

 

Step 7

     

Replace the measuring head with an exchange unit!

     

Necessary parts used in the fault locating procedure:

Step 1:

Digital u- tube manometer

100138

Checking negative pressure

Step 1:

Standard u- tube manometer

10046

Checking negative pressure

Step 2:

Scavenging air filter/ Fresh air filter

10042

Replacement of filters

Step 2:

Fresh air restrictor

10992

Replacement of filters

Step 3:

Cotton stick

10036

Cleaning of the fresh air bores

Step 4:

Gasket for measuring head

10969

Replacement of gaskets

Step 4:

Flexible bellow

10023

Replacement of gaskets

Step 5 & 6:

Flexible bellow for fresh air

10975

Replacement of gaskets

Step 7:

Exchange measuring head

See under **

Replacing of measuring head

**Please check your model description for correct part number under “SPARE PARTS”!

– Optical sensor dirty!

Step 1

Open the inspection cover

 

clean the infra-red sensor glass on the left side with cotton sticks (P/n.:10036) and technical alcohol (P/n.:10035)

 

clean the infra-red sensor glass on the right side with cotton sticks (P/n.:10036) and technical alcohol (P/n.:10035)

 

     

close the inspection cover!

     

Necessary parts used in the fault locating procedure:

Step 1:

Cotton sticks

10036

Checking negative pressure

Step 1:

Technical alcohol

10035

Checking negative pressure

Step 2

     

Replace the measuring head with an exchange unit!

     

Necessary parts used in the fault locating procedure:

Step 2:

Exchange measuring head

**

Replacing of measuring head

**Please check your model description for correct part number under “SPARE PARTS”!

– Checksum error!

Step 1

Repeat parameter setting- see instruction manual!

Step 2

     

Replace the measuring head with an exchange unit!

     

Necessary parts used in the fault locating procedure:

Step 2:

Exchange measuring head

**

Replacing of measuring head

**Please check your model description for correct part number under “SPARE PARTS”!

– Ambient temperature too low!

Step 1

Engine compartment ventilator blows cold air into the device… change blowing direction of ventilator away from the OMD. Check measuring head heating if this component is defect.

Step 2

     

Replace the measuring head with an exchange unit!

     

Necessary parts used in the fault locating procedure:

Step 2:

Exchange measuring head

**

Replacing of measuring head

**Please check your model description for correct part number under “SPARE PARTS”!

– Ambient temperature above 70 C°!

Step 1

Remove or turn away ambient heating components. Install metal heat shields against radiation. Install vortex coolers.

Step 2

     

Replace the measuring head with an exchange unit!

     

Necessary parts used in the fault locating procedure:

Step 2:

Exchange measuring head

**

Replacing of measuring head

**Please check your model description for correct part number under “SPARE PARTS”!

– Electronic temperature too low!

Step 1

Check if engine room ventilator blows air directly at the OMD device… change blowing direction of the ventilator to ensure that cold air is not directed to the OMD device. Check measuring head heating if this component is defect.

Step 2

     

Replace the measuring head with an exchange unit!

     

Necessary parts used in the fault locating procedure:

Step 2:

Exchange measuring head

**

Replacing of measuring head

**Please check your model description for correct part number under “SPARE PARTS”!

– Electronic temperature too high!

Step 1

Remove or turn away ambient heating components. Install metal heat shields against radiation. Install vortex coolers.

Step 2

     

Replace the measuring head with an exchange unit!

     

Necessary parts used in the fault locating procedure:

Step 2:

Exchange measuring head

**

Replacing of measuring head

**Please check your model description for correct part number under “SPARE PARTS”!

– Light button defective!

Step 1

     

Clean the glass LED plate

     

If this does not help, do as follows…

Step 2

     

Replace the measuring head with an exchange unit!

     

Necessary parts used in the fault locating procedure:

Step 2:

Exchange measuring head

**

Replacing of measuring head

**Please check your model description for correct part number under “SPARE PARTS”!

– Supply voltage too high!

Step 1

   

Remove the reset task house…

 

measure the voltage between pin 1 and 2 to be between 18 and 31,2 Vdc. Re- adjust the voltage if necessary!

   

If this does not help, do as follows…

Step 2

     

Replace the measuring head with an exchange unit!

     

Necessary parts used in the fault locating procedure:

Step 2:

Exchange measuring head

**

Replacing of measuring head

**Please check your model description for correct part number under “SPARE PARTS”!

– Optical sensor defective!

Step 1

Open the inspection cover

 

clean the infra-red sensor glass on the left side with cotton sticks (P/n.:10036) and technical alcohol (P/n.:10035)

 

clean the infra-red sensor glass on the right side with cotton sticks (P/n.:10036) and technical alcohol (P/n.:10035)

 

     

close the inspection cover!

     

Necessary parts used in the fault locating procedure:

Step 1:

Cotton sticks

10036

Checking negative pressure

Step 1:

Technical alcohol

10035

Checking negative pressure

Step 2

     

Replace the measuring head with an exchange unit!

     

Necessary parts used in the fault locating procedure:

Step 2:

Exchange measuring head

**

Replacing of measuring head

**Please check your model description for correct part number under “SPARE PARTS”!

– Airflow- sensor defective!

Step 1

     

Replace the measuring head with an exchange unit!

     

Necessary parts used in the fault locating procedure:

Step 1:

Exchange measuring head

**

Replacing of measuring head

**Please check your model description for correct part number under “SPARE PARTS”!

– Airflow- sensor defective!

Step 1

     

Replace the measuring head with an exchange unit!

     

Necessary parts used in the fault locating procedure:

Step 1:

Exchange measuring head

**

Replacing of measuring head

**Please check your model description for correct part number under “SPARE PARTS”!

– No power on the unit

Step 1

Remove the reset task house…

 

measure the voltage between pin 1 and 2 to be between 18 and 31,2 Vdc…

 

if voltage is ok- remove the measuring head…

 

     

and replace the 3,15 A fuse.

     

Necessary parts used in the fault locating procedure:

Step 1:

Fuse 3,15 A

11058

Replacement of fuse

Step 2

     

Replace the measuring head with an exchange unit!

     

Necessary parts used in the fault locating procedure:

Step 2:

Exchange measuring head

**

Replacing of measuring head

**Please check your model description for correct part number under “SPARE PARTS”!