Valeo spheros thermo 230, Руководство по ремонту

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601
Thermo 230 / 231 / 300 / 301 / 350 6 Functional Checkouts
6 Functional Checkouts
6.1 General
This section describes the tests and adjustments on the
heater in installed and removed condition to prove its
serviceability.
The heater must not be operated in closed areas like
garages or workshops with no exhaust ventilation
facilities.
ATTENTION:
To prevent fires do not switch heater on with burner
swung open.
6.2 Adjustments
6.2.1 Adjustment of CO
2
Contents
It is allowed to change the manufacturer’s setting for
combustion air quantity by rotation of the setting ring.
Measurement of the CO
2
value of the exhaust gas
must be performed followed by an adjustment of the
combustion air quantity as required in case of:
–
repairs on the burner
– irregularities in combustion
– functional checkouts
– nozzle replacement
Setting procedure
– measure control unit power supply voltage
– operate heater for approximately 5 min.
– measure CO
2
contents and soot level and compare
with relevant diagram
– soot level target value acc. Bacharach
≤ 4
– loosen fastening screw (refer to Fig.) and reposition
setting ring with fastening screw until rated value is
obtained.
– tighten fastening screw and apply screw seal varnish.
NOTE
CO
2
setting depends on fuel (viscosity) and on geodetic
altitude (0.1 % per 100 m).
If proper setting cannot be obtained, proceed as follows:
–
check burner head air side for damage and replace if
required
– Check the fuel pump pressure acc. to para. 6.3.5 and
readjust as necessary or replace the fuel pump.
– Inspect fuel filter and fuel pump filter (screen) for
contamination and replace as needed.
– replace fuel nozzle
– measure burner motor speed
Danger of suffocation!
Warning!
Fastening screw
1 +0.5 Nm
18 20 22 24 26 28 30 32
6
7
8
9
10
11
12
13
14
Voltage
CO
2
- setting at 500 m NN
CO
2
(Vol.-%)