FurnacePros LA-309, Owner'S Manual

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Service & Troubleshooting
3.6.3 Conveyor System
1) A Transport Speed Error occurred.
a) Check K6 (located on Safety Enclosure panel per 802-101770 Power Control schematic) relay light
“on”.
b) Check that PLC has power.
c) Check fuses MA, MB, MC (neon light if blown) on Motor Control panel and on-board motor fuse on
Motor Speed controller per 802-101771 Frame Wiring schematic.
d) Inspect clutch for slippage.
e) Visually inspect for belt jam or snag.
f) Check the input signal on Motor Speed controller board (located in motor box); S1 is common, S2 is
speed control. At maximum speed the voltage is approximately 10 Vdc.
2) Transport Motion Fault has occurred.
In addition to Section 0, the following items should be checked:
a) Check for wear and tear on the small gear present on the transport motion sensor, and the gear located
on the drive shaft at the exit end of the furnace.
b) The optical coupler mounted on the sensor must be kept clean and positioned properly. The timing
wheel must be adjusted so the edge of the wheel and the face of the wheel have the same spacing,
with respect to the optical coupler.
3.6.4 Jerking or vibrating of transport system
See Recommended Maintenance and Frequency table 3.5.2 for transport system alignment and
maintenance.
10-004 – 676-110000
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