9 Troubleshooting
Problem: Contherm
™
system is freezing up
Table 9-10 identifies specific factors that may result in the system freezing up. System freeze up is a process situation where the
rotors cease to spin and scrape due to freezing of product at a rate that exceeds the Contherms
™
ability to remove frozen
material from the heat transfer wall. To resolve the problem, perform the appropriate action as described in the table. If
applicable, the table will direct you to the appropriate maintenance related procedure in Chapter Seven.
Table 9-10. System Freezing Up (Ammonia/Freon)
Possible Cause
How To Resolve
Product flow too low or has stopped.
If the product flow should stop during operation, keep the rotors turning and
place the refrigeration system under Maintain Status operation. Discover
cause of stoppage and resume. Refer to chapter 7, section 7.8.1 Maintain
Status Feature for more information.
Product supply has stopped (empty feed tank)
Adjust controls to alert when product feed tank supply is low. Do not let
supply lines run dry. Monitor current draw of motor with ammeter.
Rotor has stopped.
Check motor starter and control.
Product input temperature has been lowered
during processing run.
Discover cause and correct or modify controls to function under new
parameters if capable.
Refrigeration system malfunction.
Check the operation of the refrigeration system.
Contherm
™
drawing high amps. Set points on
ammeter too high
Re-adjust the settings to properly activate the Maintain Status operation.
System power failure
Check power supply
WARNING
Shut down system immediately and energize Hot Gas Defrost
System if system freezes up to the point where rotor will no longer
turn. Resume the product run only after system has been defrosted.
Before resuming the run, readjust all valves to prevent freeze up
problem from recurring.
Do not jog motor to break out of freeze-up condition as this can
damage rotor, blades, blade pins, and spline teeth.
107
Содержание Contherm 6X11
Страница 2: ......
Страница 10: ...2 Safety Summary Figure 2 1B Safety Warnings Refer to section 2 3 for safety and inspection symbols 10...
Страница 52: ...7 Operations Figure 7 2A Installing the Rotor Helper Plate Figure 7 2A Installing the Rotor Helper Plate 52...
Страница 66: ...8 Inspection Maintenance Figure 8 2 Component List Figure 8 2 66...
Страница 88: ...8 Inspection Maintenance Figure 8 13 Upper Bearings Direct Coupled Electric Drive Motor 88...
Страница 99: ...8 Inspection Maintenance Figure 8 18B CONTHERM Hydraulic Lift Assembly With Hold Down 99...
Страница 117: ...10 Appendix A Additional Installation Drawings 117...
Страница 118: ...10 Appendix A Additional Installation Drawings 10 Install the hydraulic lift pump and stack valve components 118...
Страница 123: ...123...