Merco Savory RT-2VSE - Manual (Page 6)

RT-2VSE/VSHO Service Manual 6
PROBLEM POSSIBLE CAUSES SUGGESTED REMEDIES
1. Defective or improper electrical
outlet.
1. Check voltage at receptacle. Check that
voltage conforms to Savory specifications
on unit data plate.
2. Defective plug or line cord
2. Check plug and line cord. Replace if
necessary.
No heat, conveyor belt
doesn’t run
3. Defective on/off switch 3. Replace switch.
1. Defective heating elements 1. Replace elements
Unit fails to heat
2. Defective, loose or improper
wiring or terminal block.
2. Check wiring and terminal block for
improper connections or defects. Refer to
wiring diagram.
1. Defective heating elements
1. Turn unit on and set heat at #9. Observe
elements after a 15-minute warm-up period.
Replace any element that does not glow. Insufficient heat or no heat
from upper or lower
heaters
2. Defective or improper wiring or
terminal block
2. Check wiring and terminal block for
improper connections or defects. Refer to
wiring diagram.
Conveyor belt is
excessively noisy and/or
does not run smoothly
1. Worn shaft bearing(s) 1. Replace bearing(s)
2. Incorrect conveyor belt tension 2. Adjust tension
3. Incorrect alignment of drive
chain, gear motor, or sprockets
3. Adjust alignments
4. Worn sprockets and/or drive
chain
4. Replace sprockets and/or drive chain
Conveyor belt does not run 1. Misaligned or bent motor fan
blade.
1. Check for proper alignment of fan blade.
Adjust or replace if necessary.
2. Defect in one or more of the
following:
a. wiring
b. terminal block
c. speed control
d. gear motor
e. conveyor on/off switch
2. Connect AC voltmeter to gear motor
terminals. Rotate speed control to
maximum. Meter reading of 208/240V
indicates problem is NOT items (a) through
(d). Replace gear motor. If reading of
208/240V is not obtained, check in
sequence starting with item (a) until defect
is isolated. Replace any defective
components. Refer to wiring diagrams.
Check all connections.