Vulcan-Hart VCE10F 126179 Service Manual page 34

ELECTRIC COMBI OVENS - SERVICE PROCEDURES AND ADJUSTMENTS
B. If there is no water treatment system
installed in the water line to the steam
generator, then add an amount of vinegar
equal to the tank volume for the combi
model. See table below.
1) Add the vinegar to the steam
generator through the opening in the
oven cavity. Use the funnel and
flexible tube provided with the oven.
TANK
VOLUME
MODEL
(GAL) (QT)
0.8 3.2
VCE6H
VCE10H 1.6 6.3
VCE10F 1.6 6.3
2.6 10.5
VCE20H
3.4 13.7
VCE20F
NOTES: 1. Scalekleen is also available in a 2.2 lb packet
size. If the 2.2 lb. size is used, do not add the
entire packet. Measure the appropriate amount
in ounces then add.
2. Do not exceed the amounts listed in the table
above.
4. Press the START button on the oven control
(programmable or manual) to begin the clean
cycle.
A. The door closes and locks and the
buttons/knobs on keypad lock out to
prevent interruption until the clean cycle is
completed. No other operations can be
performed for approximately 45 minutes.
NOTE: Pressing the off key will not discontinue
the clean cycle or turn the oven off. If a power
interruption or other malfunction occurs, the
clean cycle will resume from step 5B when
power is restored.
B. If deliming through a water treatment
system, the steam generator begins a
normal fill cycle.
1) When the proper water level is
reached, the steam generator heating
elements and cavity fans turn on.
C. If deliming using vinegar, the amount
added to the steam generator is already at
the proper level.
1) The steam generator heating
elements and cavity fans turn on.
2) As the vinegar level lowers, the
steam generator will then fill with
water as required.
AMOUNT OF
SCALEKLEEN ADDED
TO FEEDER BOWL
1, 2
(7 OZ. PACKET SIZE)
1.0 Packet or 7.0 oz.
1.5 Packets or 10.5 oz.
1.5 Packets or 10.5 oz.
2.5 Packets or 17.5 oz.
3.5 Packets or 24.5 oz.
Page 34 of 68
NOTE: If the cavity temperature is above the
steam temperature set point, automatic cooling
will occur. See "WATER INJECTION
(HUMIDIFIER) under SEQUENCE OF
OPERATION".
D. The timer starts counting down and the
oven will steam for 30 minutes.
5. At the end of 30 minutes.
A. Heating elements and cavity fans turn off.
NOTE: Heating elements and cavity fans
remain off during "timed" drain and fill cycles.
B. Time display shows 10 minutes but does
not continue counting down.
C. Steam generator drains (45 seconds on 6
& 10 levels; 60 seconds on 20 levels).
D. Steam generator fills (37 seconds on 6 &
10 levels; 75 seconds on 20 levels).
6. The steam generator drains twice more and fills
once (both timed) to rinse out any remaining
chemicals.
7. The steam generator begins a normal fill cycle.
A. When the proper water level is reached,
the heating elements and cavity fans turn
on.
B. The timer starts counting down and the
oven will steam for 10 minutes.
8. When time expires, the steam generator drains
a final time.
9. At the end of the clean cycle procedure.
A. The oven will beep for 10 seconds and the
temperature display will show "dOnE"
indicating the cycle is complete.
B. The door unlocks and opens (slightly) and
the buttons/knobs on keypad unlock.
NOTE: If an error occurs during the clean cycle,
"FAIL" will display in the temperature display instead
of "dOnE".
C. If a deliming chemical was added to the
water treatment system.
1) Turn the water supply off.
2) Press the relief valve at the top of the
feeder bowl head to relieve system
pressure.
3) Unscrew the feeder bowl from the
head, remove the dip tube and re-
install the cartridge.
4) Replace the feeder bowl.
5) Turn the water supply on.
D. If vinegar was added to the steam
generator, then procedure is complete.
10. Combi oven is ready for normal use.