IPSO DR50 User Manual
Page 24
Page 24
N O T E :
All dryers manufactured are equipped with the DSI
(direct spark ignition) modules. These are designed to increase
dryer efficiency and to reduce dryer operating costs. The main
burner is directly ignited from a spark electrode. A burning flame
provides an electrical path for a small amount of sensing current to
allow gas valve operation. If the main burner flame extinguishes for
any reason (aside from the thermostatic control) sensing current
will shut down the gas valve and the spark ignition circuit.
1 .
Once flame is established, the spark shuts off, and the main
burner flame is then electronically monitored by means of a
sensing spark probe which is located over the burner. The gas
valve remains energized (open).
2 .
If no flame is detected within the first 11 seconds the DSI will
go into a safety “lock-out”. The gas valve is de-energized.
3.
Recovery from a safety lockout requires one of the following:
A. Opening the main door thus interrupting power to the DSI
module and allowing dryer diagnostic trouble shooting.
B . Disconnecting the entire dryer from a power source using a
circuit breaker or a switch.
4 .
By closing the main door the ignition circuit will be restored for
another trial of the ignition circuit.
5 .
Once the thermostatic control has been satisfied by reaching a
pre-set temperature or the drying timer has been timed out, the
ignition circuit will be de-energized thus extinguishing the
flames.
6 .
The dryer will continue to run in a cool-down mode without
heat. This process will cool the load to the touch and help to
eliminate wrinkling.
7 .
The cool - down time is pre-set on some models and manually set
on other dryer models. The cool-down cycle prevents fabric
wrinkles by allowing clothes to reach room ambient temperature
while still in a continuous levitation state until clothes are ready
to be folded or pressed.
Direct-Spark Ignition Operation
DIRECT SPARK
IGNITION
O P E R A T I O N