AEC Colortronic MTF 3000 Series Granulator - Manual (Page 24)

11.0 Fans/Blowers - Pneumatic Evacuation
11.1 Description
Colortronic granulators can be supplied with an optional Fan (blower) system to provide
efficient, continuous evacuation of granulate from the machine. Colortronic offers a large
variety of Fan configurations. The following information is intended to be representative of
the basic functioning and design of a Fan, rather than being specific to one particular
configuration.
11.2 Pre-Operational Checklist
Have all installation and preparation instructions been read and followed?
Have sufficient location clearances been allowed?
Has the equipment been grounded as required by local codes and/or Article 250 of the
National Electric Code?
Have all fan motors been checked for rotation?
Have all fan controls, pushbuttons, and limit switch safeties been checked for
proper functioning?
Are all accessory components electrically and mechanically connected with proper
support and with all fasteners tight?
Are cyclonic air separator and filter bags empty? (optional equipment)
Are all electrical enclosure boxes tightly closed and clamped shut?
Are all personnel clear of the machine?
11.3 Troubleshooting and Suggested Actions
1. No granulate
a)
Fan is too small. Replace with larger unit or fan wheel
b) Fan wheel is damaged or worn. Replace or repair as required.
c) Fan tubing is not connected properly. Connect as required.
2. Fan stalls
a)
Fan has loose belts. Inspect, and if acceptable for use, install and tighten per
maintenance instructions.
b) Fan wheel is loose on shaft. Tighten set screws as required.
3. Bearings sound noisy or are excessively hot.
a)
Lack of lubrication. Lubricate per maintenance instructions.
b) Bearing have exceeded their rated life. Call the Colortronic Service
Department for replacement instructions.
4.
Belts slip or squeal
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