Schwank sportSchwank - Manual (Page 14)

sportSchwank Manual
IM080731
RD: July 2008
RL: 01A
BA
Flame Failure - Re-Ignition:
If the established flame signal is lost while the burner is operating, the control will re-
spond within 0.8 seconds. The HV spark will be energized for a trial ignition period in
an attempt to relight the burner.
If the burner does not light the control will make two more attempts to relight the burner
before de-energizing the gas valve. If the burner does not relight, the control will go
into lockout as noted above in “Failure to light”. If flame is re-established, normal op-
eration resumes. Multi-try models will allow three tries for ignition including interpurges.
Cautions:
1. Ceramic insulators should not be in or close to the flame.
2. Electrode assemblies should not be adjusted or disassembled. Elec-
trodes should have a gap spacing of 1/8”- 3/16” (3.12± 0.81 mm). If this
spacing is not correct, the assembly must be replaced. Electrodes are preset and
NOT field adjustable.
3. Exceeding the temperature limits can cause nuisance lockouts and premature elec-
trode failure.
Flame current is the current which
passes through the flame from the sen-
sor to ground. The minimum flame cur-
rent necessary to keep the Fenwal 35-60
system from lockout is 0.7 µA
(microamps). To measure the flame cur-
rent, connect analog DC microammeter
to the FC-FC+ terminals.
Meter should read 0.7 µA or higher. If the
meter reads below “0” on scale, meter
leads are reversed. Disconnect power
and reconnect meter leads for proper po-
larity.
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