TESTO 0554 0307 Mode D'emploi page 7

4.2 Determining the smoke number
1 Check spot for oil derivate: Pour drops of sol-
vent right next to the spot.
- If colour is not grey, the sample is ok.
-or-
- Grey colour spreads to spot which means
that there is oil in the flue gas!
Check oil burner!
- The grey value, closest to the colour of the
spot, indicates the smoke number.
3 The arithmetic mean of the smoke numbers
are calculated from all of the samples. The
value is rounded to the next whole figure.
- This value is the smoke number of the sys-
tem.
5. Maintenance
5.1 Cleaning the smoke pump
Removing slightly adhesive soot particles:
With a slightly tightened knurled screw and
without filter paper, let the pump run through
a few quick strokes.
Dismantling the smoke pump:
1 Screw off the cylinder cover plate by turning it
to the left.
2 Carefully remove plunger from the cylinder.
Do not damage the collar on the thread of
the cylinder inner wall!
Do not remove collar from plunger rod to
clean.
3 Unscrew probe head by turning it to the left.
4 Unscrew valve to the left using the enclosed
key.
2 Hold spot from filter
paper strip behind the
grey of the smoke num-
ber scale and read off the
smoke number.
Removing lubricant residue:
Only use cleaning agents which do not
attack plastic!
Clean plunger rod using fine sand paper.
Clean cylinder wall, collar and other parts
using a damp cloth or suitable brush.
5.2 Regreasing smoke pump
Clean all parts of the smoke pump before
regreasing (See 5.1 Cleaning smoke
pump)!
Only testo lubricating oil (0554.0304)
should be used to grease the pump!
Do not apply too much lubricating oil
1 Apply lubricating oil to collar and place a layer
of non-linting textile over it, through which the
oil can soak.
2 Move plunger up and down in cylinder so that
an even film is applied to the cylinder wall.
3 Any oil remaining in the textile can be distribu-
ted via the collar edge.
4 Put smoke pump back together again.
5.3 Checking for leaks
1 Place a piece of cardboard, with the thick-
ness of two postcards, in the slot in front of
the cylinder output and keep it in position by
twisting the knurled screw to the right.
2 Using handle, pull pump plunger out by
approx. 3cm and then release.
- The handle returns to its original position:
pump is not leaking.
-or-
- Handle does not return to its original position:
Pump is leaking.
Possible causes: Rubber hose defect (See 5.4
Checking rubber hose).
3