Alto-Shaam CombiTouch 7.14es, Technical & Service Manual

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T
r o u b l e s h o o T i n g
T
r e e s
• E
l E c t r i c
c
o m b i t h E r m
c
o m b i
t
o u c h
t
E c h n i c a l
S
E r v i c E
m
a n u a l
• D 4
T r o u b l e s h o o T i n g T r e e s
E S — N o S t e a m P r o d u c t i o n
Is the door switch in the
closed position?
Yes
No
Close door.
Investigate issue with
S-7 door switch.
Are the steam generator water
level probes, B-1 and B-2,
satisfied?
See "No Steam
Generator Fill."
No
Yes
Is the B-5 Steam Bypass
probe below set point
(200°F/°C)?
No
Yes
Are the K-1/2/3 immersion
element contactor(s) being
energized?
Determine which side of coil
voltage is missing and correct.
• A-1 is L-1 switched in from the
HRB (High Voltage Relay Board)
• A-2 is L-2 constantly supplied
from the X-11-130 terminal block
No
Yes
Replace faulty contactor(s).
Are the K-1/2/3 immersion
element contactor(s)
engaging (pulling in)?
No
Yes
Is there voltage across
L-1/L-2/L-3 on K-1/2/3?
Correct wiring issue between
L-1/2/3 terminals on K-1/2/3
contactor(s) and T-1/2
terminals on K-41 and T-3
terminal on K-42.
NOTE: K-41/42 contactors
supplied L-1/2/3 from main
power terminal block.
Replace faulty K-1/2/3
contactor(s).
Is there line voltage across
T-1/2/3 terminals on
K-1/2/3 contactor(s)?
No
Yes
Yes
No
Yes
No
No
Yes
Is there voltage at E-1/2/3
Immersion elements?
Are the E-1/2/3 immersion
elements drawing current
on each loop of each
element?
Correct wiring issue between
K-1/2/3 contactor(s) and E-1/2/3
immersion elements.
Replace faulty E-1/2/3
Immersion element(s).
Steam production is in process and steam
introduction into the oven cavity should be
visible. If steam introduction into the oven
is not visible within 3-5 minutes, inspect
the steam generator for scale build up.
Immersion element
contactors will not be
energized until B-5 is below
set point.