Manual instruction MM850482 ed.04
41
8.2
Smoke Pump Maintenance
Gas-Tight Checking
To have a correct measurement the pump should be gas-tight. Turn the screw and close the probe with your
finger. Pull the plunger for 3 cm and verify that the gasket does not leak from the vacuum. If a leak is found the
gasket needs to be lubricated. When you push the plunger the valve must close immediately to have a 1.9/2.0
liters of air with 10 shoots. The correct smoke index can be obtained only if the pump works correctly.
Service
1. Clean and lubricate the cylinder the stem and the gasket every 30 measurements.
2. Wash using alcohol if the valve is not gas-tight
3. Clean the probe and the paper support
4. Check the pump for gas-tight
5. Use only clean paper filters and a readable scale index table
8.3
Error Messages
UniGas
performs the auto diagnostic procedure when switched on. When measuring it checks also for
anomalous conditions. If analyzer founds trouble, it displays an error for the related parameters. Printing the
report, the error messages will be printed. Sometimes these messages correspond to an unrecoverable
problem and it is necessary to return the instrument to Eurotron for maintenance. Frequently these messages
are referred to a recoverable trouble and can be solved by you.
The following table shows the possible UniGas
error messages:
Error message
Problem
Solutions
Calc Err
Parameter calculations error.
The instrument cannot perform the calculations.
Check and solve the others error conditions.
Probe Er
The external Rtd probe is disconnected or
damaged.
Connect or replace the external temperature probe.
RJ Err
Internal temperature reference damaged.
Return the instrument to Eurotron for maintenance
Over
Over range condition
The problem is solved automatically when measure
return inside the range
Under
Under range condition
The problem is solved automatically when measure
return inside the range
--------
No calculus available
The instrument cannot perform the calculus. Check
and solve the others error conditions. (e.g.
O
2
>18%).
Excluded
CO sensor excluded by electro-valve
Automatic CO sensor protection is active. Perform
one or more autozero cycles in fresh air.
Tc Error
The thermocouple is disconnected or
damaged.
Connect or replace the temperature probe.
Tsens Er
Cell compensation error
Return the instrument to Eurotron for maintenance.
Zero Err
The autozero procedure is failing
Perform one or more autozero cycles in fresh air. If
the problem remains, Return the instrument to
Eurotron for maintenance.
Sens. Er
Broken cell
Return the instrument to Eurotron for maintenance.
No sens.
The cell is non installed
No probe
No external probe connected on mini-din
connector.
Connect or replace the temperature probe.
