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113376-4 Telephone 01422 822282 23
Data Label Information _______________
When contacting JLA, certain information is required to
ensure proper service/parts information from JLA. This
information is on the data label that is affixed to the left side
panel/wall area behind the control panel. When contacting
JLA, please have the model number and serial number
available.
1. Model Number – Describes the size of the dryer and
the type of heat (gas, electric, or steam).
2. Serial Number – Allows the manufacturer to gather
information on your particular dryer.
3. Manufacturing Code Number – The number issued
by the manufacturer, which describes all possible options
on your particular model.
4. Type of Heat – This describes the type of heat for your
particular dryer, gas (either natural gas or L.P. gas),
electric, or steam.
5. Heat Input (For Gas Dryers) – This describes the heat
input in British thermal units per hour (Btu/hr).
6. Orifice Size (For Gas Dryers) – Gives the number drill
size used.
7. Electric Service – This describes the electric service
for your particular model.
8. Gas Manifold Pressure (For Gas Dryers) – This
describes the manifold pressure taken at the gas valve
tap.
Procedure for Functional Check
of Replacement Components _________
For Heat Control
Module Ignition
Circuit
For Models
with DSI Module
(Type I)
Theory of Operation: Start the drying cycle. When the
gas burner ignites within the chosen trial for ignition time
(6-seconds), the flame sensor detects gas burner flame and
signals the DSI module to keep the gas valve open as long
as there is a call for heat. The DSI module will “LOCKOUT”
if the gas burner flame is not sensed at the end of the trial for
ignition period. The trial for ignition period will be repeated
for a total of 3 retries/trials (the initial try and 2 more retries/
trials). If the flame is not sensed at the end of the third retry/
trial (inter-purge period of 30-seconds) the DSI module will
“LOCKOUT” (L.E.D. flashes).
A steady L.E.D. indicator indicates normal operation.
No L.E.D. indicator indicates a power or an internal failure
has occurred.
For Models
with DSI Module
(Type II)
Theory of Operation: Start the drying cycle. When the
gas burner ignites within the chosen trial for ignition time
(8-seconds), the flame sensor detects gas burner flame and
signals the DSI module to keep the gas valve open as long
as there is a call for heat. The DSI module will “LOCKOUT”
if the gas burner flame is not sensed at the end of the trial for
ignition period. The trial for ignition period will be repeated
for a total of 3 retries/trials (the initial try and 2 more retries/
trials). If the flame is not sensed at the end of the third retry/
trial (inter-purge period of 30-seconds), the DSI module will
“LOCKOUT” (a red L.E.D. diagnostic indicator will flash).
An unlit red L.E.D. diagnostic indicator indicates normal
operation.
A lit green L.E.D. diagnostic indicator indicates dryer controller
is calling for heat and that all interlocks have been satisfied.