Guspro BB-8416884 - Firing Sequence

2017_E_TYPE-HL.doc Page 32 of 55 24-Oct-2017
Table 4.1
Firing Sequence
System on TE1 (process controller)
TE2 (oxidizer controller)
TE3 (process high temp controller)
TE4 (high temp safety controller)
PBC 1 (7800 module process)
OBC 2 (7800 module oxidizer)
Energies and illuminates PV (process value)
and SV (set value)
CR9 energizes (process high temp relay)
CR8 energizes (high temp safety relay)
Electronic circuits energized
Electronic circuits energized
Press RUN/RESET on process controller
to start selected program
SUB1 closes
CR7 (cycle start) energizes CR7-1 closes
OPC (proof of closure) proves
PPC (proof of closure) proves
RCL illuminates (system light)
CR2 energizes (process blower relay)
CR3 energizes (process proof of closure)
B1 blower motor starts (optional)
CR2-1 opens
CR2-2 closes
PM1 starts (1
st
process blower)
TR1 (purge timer) allows process blower
to blow 4 volumes of air into oven.
PAS1 closes (process air switch)
CR11 energizes TR1 (purge timer)
When timer is complete
TR1-1 opens
TR1-2 closes
CR2-1 closes, CR1-2 opens (process blower
relay)
CR1 energizes (oxidizer burner relay)
OM1 starts (oxidizer blower)
OAS1 closes (oxidizer air switch)
OBC1 energizes (oxidizer burner)
OLGP1 closed if gas pressure is adequate
OPV1 (oxidizer pilot flame) opens and allows
4 seconds of gas
OIT1 (oxidizer ignition) sparks for 4 seconds
OUV1 (oxidizer scanner proves)
OR1-1 closes
OR1 (oxidizer main gas valve relay) energizes
Holding coil for OPC
OMV (oxidizer main gas valve) opens
TE2 operates Hi Lo contact on OMV oxidizer
main gas valve (SEE NOTE 1)
PL2 illuminates (oxidizer Hi Fire light)
OPL1 illuminates (oxidizer gas on light)
CR6 (Proof of temp) ensures that the
oxidizer chamber is at 1400 degrees F
before energizing the process burners
PBC1
CR6-1 closes
PAS1 closes (process air switch)
CR11-2 closes
PM1 starts (1
st
process blower)
CR11 energizes
WPS1 is proven
PLGP1 closed if gas pressure is adequate
PBC1 energizes (1
st
process burner)
(SEE NOTE 3)
PPV1 (process pilot flame) opens and allows
4 seconds of gas
PIT1 (1
st
process ignition) sparks for 4 sec
PUV1 (1
st
process scanner proves
flame in .8 seconds)
PR1 closes
PR1-1 energizes
TE1 - OUT1 process Hi/Lo contact on PMV
process main gas valve (SEE NOTE 2)
PPV1 solenoid valves open
PPL4 illuminates (1
st
process gas on light)
TE1 program completes
SUB1opens
CR7 de-energies
ALL devices open (end of cycle)