3.
After cooling to less than 200 degrees, release the pressure by switching the "PUMP"
switch to the "OFF" position and by turning the air regulator completely counter-
clockwise. Slowly open the "PRESSURE RELEASE" valve. The pressure gauge
should return to zero.
4.
To remove water from the test cell, slowly open the "AIR TO CYLINDER" valve. Air
pressure will force water from the test cell, and when air is escaping out of the vent the
"AIR TO CYLINDER" valve should be closed.
5.
Slowly loosen the gland on the thermocouple and remove it from the test cell.
6.
The cap screws should be loosened and the test cell cap should be unscrewed.
Remove the cement specimens and cool as stated within API Specification 10.
7.
Return the test cell cap to the test cell to prevent dust and other matter from entering the
test cell. Close all valves and return all switches to the "OFF" position.
GENERAL MAINTENANCE
1.
One of the most important elements concerning trouble free operation is keeping the
interior of the test cell as clean as possible. Never insert a cement covered cement
mold into the test cell and periodically examine the test cell to ensure that it is clean.
High pressure valves wear quickly when exposed to fluids containing cement and other
particulate matter.
2.
OFI uses a high pressure filter to protect valve stems. We recommend that filtered
water be used in the curing chamber to prevent particulate matter from entering the
pump and possibly causing damage. Clean or replace these filters when fluid flow is
reduced from that of a clean system. Remember: Filters are inexpensive when
compared to the costs of replacing the components they were designed to protect.
3.
The test cell cap threads have been lubricated prior to shipment and periodically should
be re-lubricated.
