A.J. Antunes & Co VCT-20 9200552 - Manual (Page 18)

18
VERTICAL CONTACT TOASTER
P/N 1010719 Rev. E 02/13
No heat and conveyor belts
move (continued).
Platen is hot and conveyor
belts do not move.
Inoperative temperature display
control or platen (continued).
Ambient temperature in control
compartment too high.
Wiring problems.
Drive motor inoperable or incorrect
conveyor drive motor.
Broken drive chain or loose sprocket.
Conveyor belts installed incorrectly.
Conveyor interlock switch not
depressed or faulty.
Roller tensioner assy. bent or missing.
Conveyor belts too loose (excessive
slack).
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.
“CHEC” is showing in temperature display.
Turn toaster off and allow control compart-
ment to cool down to 140°F (60°C) and
restart toaster. Be sure cooling fan is oper-
ating and nothing is blocking the flow of
cooling air to bottom of toaster.
Check all electrical connections for burns,
discoloration or arcing. Replace all connec-
tions or components with damaged termi-
nals. Replace all damaged wiring with the
same (or higher) rated wire.
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.
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 sprock-
ets and replace as required.
Install conveyor belt to match diagram in
Fig. 17 (page 13). Be sure that ends of the
hooks are facing down.
Install heat shield correctly or replace
switch.
Replace roller tensioner assy(s). (29, page
26).
See Servicing Conveyor Belts (page 13).
Problem Possible Cause Corrective Action