IMA-US
40.020.940 - rev. 04 - 2011
11
English
5.6
Replacing V-belt (Fig. 11)
Only for radial fans IMA 111 and IMA 185.
1.
Remove the cover (A).
2.
Lower the motor (B) by using the adjusting
nuts (C).
3.
Remove the old V-belt (D).
/i
Fit new V-belts in the reverse order.
6
TROUBLESHOOTING
6.1
Troubleshooting table
/i
Heater
V-belt tension
Pressure
Distance
IMA 111
4.4 lb
0.3 inch
IMA 185
5.7 lb
0.35 inch
Caution
Tighten the V-belt according to the table.
Before you trouble shoot, make sure
that the electricity is connected and the
fuel tank is full.
Warning
For all service and adjustments contact
qualified, competent and authorized
persons.
Warning
Disconnect the electric power during
repair!
Fault
Cause
Solution
Action
The heater does
not start up.
1
The heater has no electric power. Check the power connection.
User
2
The burner relay is in failure: the
light burns.
Push the reset button of the
burner relay.
User
3
A malfunction has occured in the
burner relay.
Replace the burner relay.
Dealer
4
The thermostat settings are
incorrect.
Correct the settings.
Dealer
5
The room thermostat is defective. Replace the thermostat.
User
6
No cap is present on the
thermostat connection.
Place the cap if a room
thermostat is not used.
User
7
The fuel pump is blocked.
Replace the fuel pump.
Dealer
8
The maximum thermostat
stopped the heater.
Check (and correct) the airflow.
Reset the heater.
User
9
The digital combination
thermostat or sensor is defective.
Replace the digital combination
thermostat or sensor.
Dealer
10
The main motor is overheated.
Check the air inlet.
Let the motor cool down until the
reset of thermo couple.
See faults: 2, 3, 4, 5, 6, 8, 9.
User
Test the motor and replace if
necessary.
Dealer
11
The capacitor of the burner motor
is defective.
Replace the capacitor.
Dealer
12
The room thermostat has been
placed in the hot-air flow.
Install the room thermostat out of
this hot-air flow.
User
The burner starts,
but no flame is
formed.
13
The pump coupling is defective.
Replace the pump coupling.
Dealer
