A.J. Antunes & Co VCT-20 9200552 - Manual (Page 19)

19
VERTICAL CONTACT TOASTER
P/N 1010719 Rev. E 02/13
Product is over-toasted or
platen heat is too high or
drop time is too slow.
Conveyor belt wraps dirty and not
permitting belt to pull buns across the
platen in required time.
Temperature set too high.
Bun adjustment controls set incorrect-
ly.
Buns sticking on release sheet or
conveyor belt wrap.
Belt wrap not tacky.
Conveyor cover assy(s) not installed.
Conveyor belts installed incorrectly.
Defective temperature display control
or defective platen.
Clean belt wrap as described on page 12.
Follow directions carefully.
Reset platen temperature to 560°F (293°C).
Measure bun thickness and set bun adjust-
ment controls correctly (Fig. 6, page 8).
Clean or replace release sheet or conveyor
belt wrap.
Clean or replace belt wrap.
Install conveyor cover assy(s).
Install conveyor belt to match diagram in
Fig. 17 (page 13). Be sure that ends of the
hooks are facing down.
To check temperature display control, allow
unit to warm up for 30 minutes, then:
1. Check platen temperature at the center
of platen (with conveyor belt wrap, con-
veyor belt, tensioners and release sheet
removed). Use a pyrometer to confirm
temperature readings.
2. After platen temperature reaches a maxi-
mum of 559°- 561°F (292°- 293°C) and
auxiliary heaters reach a maximum of
339°- 341°F (170°- 172°C), and the tem-
perature begins to drop, the heat indica-
tor light on the temperature control board
should turn on. If test readings do not
agree with these figures, replace temper-
ature display control.
To check platen:
Use an Ohm meter to test resistance of the
platen heater (disconnect 1 wire to isolate
heater). Correct cold resistance for heating
element of platen is 17.81 Ohms at
208V/2550 Watts. The auxiliary heaters are
108.2 Ohms at 208V/400 Watts.
Problem Possible Cause Corrective Action