SPX Waukesha Cherry-Burrell Votator II, Руководство по эксплуатации и обслуживанию

Страница: 79 / 84

Waukesha Cherry-Burrell Troubleshooting
October 2005 95-03057 Page 79
Troubleshooting Chart
PROBLEM POSSIBLE CAUSE SUGGESTED ACTION
Freeze-up. Power failure. Check power supply.
Product outlet temperature too
low.
Adjust process to raise product outlet
temperature.
Product flow rate too low. Adjust process to increase product flow.
Check that pump is matched to process.
Product ran out of supply tank
prematurely.
Adjust supply to prevent supply lines
from running dry.
Incorrect start-shutdown
procedure.
Refer to “Startup Procedure” on page 29
and “Refrigeration Sequence of Operation
- PLC Control Panel” on page 36.
Heat transfer not at expected level. Process not set correctly. Check current process to system specs at
time of installation.
Product pressure lower than
steam pressure in jacket.
Utilize back valve to assure that system
pressure is at a minimum of 10 psi
(0.7 bar) above the media pressure.
Oil in system. Check and drain oil regularly from
accumulator and other oil separators, oil
legs or pots in refrigeration system.
Steam on jacket super heated. Use only dry and saturated steam.
Oil deposits on transfer tube. Remove heat transfer tube and clean any
deposits on tube. Add filter system to
remove impurities from cooling agents.
Liquid flow rate on jacket too
low.
Use jacket recycle loop at a flow of 50
GPM.
One or several system valves or
floats not functioning properly.
Inspect and test system valves and floats
as indicated in “Preventive Maintenance”
on page 41. Replace as necessary.
Water and air in cooling system. See “Water and Air in Refrigeration
System” on page 82.
Tube Scoring. Temperature extremes. Replace tube if scoring becomes great.
Refer to “Care of Heat Exchanger Tube”
on page 42.