Thermo 90 S / Thermo 90 ST 8 Service work
809
8.7.2 Changing the circulating pump
NOTE
The process for changing the circulating pump is the
same irrespective of whether the heater is installed or
removed.
Change as described in 9.2.2.
8.7.3 Changing the temperature limiter
NOTE
The process for changing the temperature limiter is the
same irrespective of whether the heater is installed or
removed.
Change as described in 9.2.3.
8.7.4 Changing the temperature sensor
NOTE
The process for changing the temperature sensor is the
same irrespective of whether the heater is installed or
removed.
Change as described in 9.2.4.
8.7.5 Changing the combustion air fan
NOTE
The process for changing the combustion air fan is the
same irrespective of whether the heater is installed or
removed.
Change as described in 9.2.5.
8.8 Start-up
After you have installed the heater, bleed the coolant
circuit and the fuel supply system carefully. Comply with
the instructions given by the vehicle manufacturer when
doing this. During the trial run, check all coolant and fuel
connections for leaks and to ensure that they are secure.
If the heater suffers a fault during operation, the fault must
be located and remedied (see section 5).