Berner B-24 Handleiding voor installatie- en onderhoudsinstructies - Pagina 6
Blader online of download pdf Handleiding voor installatie- en onderhoudsinstructies voor {categorie_naam} Berner B-24. Berner B-24 6 pagina's. Gas fired door heater
Pagina afdrukkenS Y M P TO M S
FAN OPERATES, LITTLE
OR NO PILOT FLAME, A N D
"TURN RESET" LIGHTS
AFTER 5 SECONDS
FAN OPERATES,
PILOT IGNITES NORMALLY,
THEN GOES OUT AS
"TURN RESET" LIGHTS
FAN OPERATES,
PILOT IGNITES NORMALLY,
THEN GOES OUT AS
"LOCKOUT" LIGHTS
TROUBLESHOOTING
C A U S E
1 )
Check gas pilot manual cock; should be left in open position
2 )
Check all gas lines for clogging and for purging of entrapped air
3 )
Check for moisture and/or conducting dirt on Sparktrode; check
electrode for carbon "bridge" to burner, which may short out ignition
spark
4 )
Check for adequate pilot flame. Adjust needle valve at burner if
necessary.
1 )
Check all manual cocks in main gas line; these should be left open
in normal position
2 )
Check scanner; remove and clean lens; check mounting pipe nipple
for clogging insects , d i r t o r r u s t
3 )
W ith selector in "WIN" but unit not operating (i.e. door switch open-
contact with door closed), hold match or lighter flame in front of
scanner. Flame relay in Fireye chassis should pull in with audible
" c l i c k " . I f n o t , p r o c e e d t o n e x t s t e p
CAUTION - Before proceeding to next steps, turn selector to "OFF",
make the changes suggested, and then return the selector to "WIN".
This is important, because in "WIN" position, the Fireye is energized
and electrical shock could result
4 )
Detach #20 and #21 leads from installed scanner, a t tach a known
good scanner to terminals #20 and #21, and repeat previous step.
I f f l a m e r e l a y n o w p u l l s i n , i n s tall new scanner. I f n o t , r e - i n s ta l l l e a d s
from original scanner and proceed to next step.
5 )
Repace Fireye chassis, inside control cabinet, with a known good unit,
and repeat step 3. If flame relay still does not pull in, have scanner
and chassis checked by Fireye distributor or by Berner.
1 )
W ith fan operating momenta r i l y j u m p e r c i r c u i t # 7 t o # 8 . This should
result in control relay CR pulling in, lighting "TURN RESET" pilot and
extinguishing "LOCKOUT". If so, insert new TDR relay (Amperite
115NO5). If not proceed to step 2
2 )
W ith fan operating, check for 11 5 v o l ts across circuits #8 and #2
(at "coil" connections of CR control relay). If no voltage, jumper per
s t e p 1 . I f s t i l l n o v o l tage backtrack through circuits 8, 7, 6 and 5 to
determine where break in circuit exists . I f 11 5 v o l ts is measured
but relay does not pull in, or if relay does pull in but "LOCKOUT" remains
lit, replace CR relay
3 )
A ft e r e i t h e r s t e ps 1 or 2 corrective action has been taken, continue with
last two symptoms.
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