Marshall Amplification HST13, Owner'S Manual

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C. Check for loose connections at the temperature controllers and heating elements.
D. Replace all connections or components that have damaged terminals. Replace all damaged wiring with same or a higher
rated wire.
E. Check resistance of heating platens:
Center Platen Heel Platen Crown Platen
Schematic - 208V 135169 20 OHMS 52 OHMS 52 OHMS
Schematic - 240V 135817 25 OHMS 52 OHMS 52 OHMS
PROBLEM:
3. Grill is hot, but conveyor belts do not move.
SOLUTION:
A, Check that conveyor is on.
B. Check conveyor speed control setting.
C. Check for power to speed control circuit board.
D. Check that belt is not slipping on roller. If so, check for tears and that the tension keeper lever is
engaged in the slot shown in Figure 5.
E. Check for loose chain, or sprockets, tighten set screw on flat of shaft if needed. Replace as
needed.
F. TURN OFF SWITCHES, UNPLUG TOASTER , and remove the right side cover. Check fuse.
Replace fuse if necessary with same type AGC 1.5 Amp.
G. Check for loose connections or wiring.
H. Check that circuit board 115/230 switch is at the 230V position.
I. Check for DC voltage of at least 25VDC at the motor.
PROBLEM:
4. Product is over or under toasted.
SOLUTION:
A. Check toasting speed. Good toasting will occur in 10 seconds from bun load to drop.
B. Check gap setting. There must be compression of the bun as it feeds into the toaster. Decreasing
the gap (per Page 1, Number 10) will increase bun temperature and darken surface color.
C. If buns are burned, the toaster platen sheet may be causing buns to get stuck in the toaster OR
the toaster thermostat may have failed in a closed condition making the center platen too hot.
Check that thermostat DOES cycle.
PROBLEM:
5. Buns do not feed properly into toaster.
SOLUTION:
A. Check condition of Toaster Platen Sheet to be sure buns are not sticking to cover. Replace
Toaster Platen Sheet if necessary.
B. Belts need washing as described under Weekly Maintenance on Page 3.
C. Toaster gap set too close. See Page 1, Number 10.
135168CH7 RV100599
5
Copyright © 1999 Marshall Air Systems, Inc.
All Rights Reserved.
OWNER'S MANUAL
MODEL HST13 - VERTICAL TOASTER