A.J. Antunes & Co VCT-20 9200560 - Manual (Page 15)

VERTICAL CONTACT TOASTER
15 P/N 1010729 Rev. G 09/13
Problem Possible Cause Corrective Action
Product is over-toast-
ed, Platen heat is too
high, or drop time is
too slow
Temperature set too high. Set temperature control at a lower setting.
Bun Thickness Adjustment
Control knobs set incorrectly.
Measure bun thickness and set bun adjustment controls
correctly (Fig. 6, page 9).
Buns sticking on Release
Sheet.
Clean or replace the Release Sheet or conveyor belt wrap.
Conveyor Covers not installed. Install the Conveyor Covers.
Conveyor Belts chains
installed incorrectly
Install conveyor belt to match diagram in Fig. 8 (page 11).
Be sure that ends of the hooks are facing down.
Defective Platen. To check platen:
Use an Ohm meter to test resistance of the platen heater
(disconnect 1 wire to isolate heater). Correct cold resis-
tance for heating element of platen are as follows:
120 Volts, 1750 Watts - 7.8 Ohms
208 Volts, 2550 Watts - 16.2 Ohms
230 Volts, 1900 Watts - 26.5 Ohms
VCT-20 only. The auxiliary heaters are 144.2 Ohms at
208V/300 Watts.
Defective or wrong drive
motor. To check drive motor:
1. Measure resistance of motor coil. Replace motor if
coil measures either open circuit or zero resistance.
2. Mark the drive motor sprocket and count the turns
per minute. Correct drive motor speed is nine (9) turns per
minute for VCT-20; three (3) turns per minute for VCT-25;
one (1) turn per minute for VCT-50.
Defective Drive Chain or loose
sprocket.
Check drive chain for kinks, broken or bent links or other
damage. Check motor sprocket and drive sprockets (on
drive shaft); tighten setscrew on flat of shaft if required.
Check for damaged/worn sprockets and replace as
required.
Wiring problem. Check all electrical connections for burns, discoloration or
arcing. Replace all connections or components with dam-
aged terminals. Replace all damaged wiring with the same
(or higher) rated wire.
Conveyor belt too loose or
missing links (41 links required
when new). When new, con-
veyor has 37 large links and 4
small links.
Remove conveyor belt (page 11). Lay belt flat and count
links. Replace entire belt if links are damaged. If conveyor belt
has too much play, it will jam. Adjust belt length as described
under Servicing the Conveyor Belt (page 10).
TROUBLESHOOTING (continued)