Roberts Gorden Dualair DA260G Series, Installation, Comissioning, Service & User Instructions

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Page 51
STA RT
A ll c ontrols ON
YES
NO
I s Gre e n light ON ? Che c k for e le c tric a l supply
ope ra tion of e xte rna l c ontrols
YES & lim it the rm osta ts
YES
I s RED loc kout wa rning P re ss in re se t button on
light ON ? c ontrol box or re m ote re se t
NO
NO NO
I gnition spa rk ope ra ting ? Re m ove pilot burne r a s in 7.3 re pla c e spa rk ge ne ra tor
& inspe c t e le c trode a nd
YES H.T. le a d. Re pla c e if fa ulty
NO YES
P ilot fla m e igniting P ilot sole noid va lve ope ning ? Che c k ga s is on
a nd purge d of a ir
YES NO
NO
Use 8.4 to te st sole noid va lve Control box fa ulty
Re pla c e
YES NO
Re d "Loc kout" light Che c k fla m e c urre nt is a t Che c k I nle t pre ssure of ga s
c om e s ON ? le a st 1 µ a m ps DC whe n is c orre c t for ga s type .
pilot lights
YES YES
Re m ove pilot burne r a s in 7.3
inspe c t fla m e probe a nd
le a d. Re pla c e if fa ulty
NO
Control box fa ulty
Re pla c e with c orre c t type .
NO NO
M a in burne r fire s ? Che c k for 230v a t output Control box fa ulty
from c ontrol box Re pla c e with c orre c t type
YES
YES
Use 8.4 to c he c k va lve s
YES
B urne r ope ra ting
To measure flame current, connect
a 0 - 50 µA DC meter in series with
The flame probe by using the flame
probe jack plug.
If the meter reads Negative values
then reverse the test leads.
WARNING Ignition output from the
spark generator is 160 kv to earth.
Extreme care must be taken
8.2 Fault Finding for Automatic Ignition Burner Systems