Taylor-Wharton EF-1000 User Manual
Page 22
BT-472 Rev. B
22
2.
Close the liquid valve and the pressure building valve. Leave the vent valve open for the duration of the
test.
3.
Allow the container to stabilize for 24 hours after filling. Weigh the container. Record the weight, date,
and time.
4.
Move the container as little as possible during the test. After 48 hours, weigh the container a second time.
Record the weight, date, and time.
The following formula will provide the actual normal evaporation rate in pounds per day. An actual NER that exceeds
40 pounds per day indicates a vacuum problem.
Daily NER =
First Weight – Second Weight X 24
Time between weights in hours
If it has been determined that the vessel has a vacuum problem it will be necessary to repair and re-evacuate the vessel.
A skilled service technician should perform vessel repair. Contact Taylor-Wharton customer service at 1-800-898-2657
for assistance in locating the closest service center.