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1. Connect the heating well power cord to an appropriate power source.
Place a dial-type metal thermometer into the well in the heating jacket and
preheat to 10°F (6°C) above the desired test temperature. A pilot light will
come on when the heating jacket is at the desired temperature as select
-
ed by the thermostat control knob.
2. Be sure all of the o-rings are in good working condition (pliable with no
nicks or cuts, etc.), and are not damaged during the assembly proce
-
dures. Place a thin film of silicone grease on all o-rings. Place an o-ring
into one end of the test cell and place the screen on top of it with the flat
side facing down. Slowly push one of the cell caps into the cell, making
sure the arrow on the cap lines up with the arrow on the cell body. Tighten
the locking screws with the supplied Allen wrench. Screw a valve stem
into the cell cap and tighten it completely.
Standard Buna N o-rings (#170-13) should be used only for tests up to
300°F (149°C). For tests over 300°F (149°C), use Viton
®
o-rings (#170-
13-3). After tests that come close to the maximum temperature, it will
probably be necessary to replace the o-rings.
If the cap locking screw seats are oval shaped and no longer round,
there is a possibility of stress failure and the cap should be re-
placed.
3. Prepare the sample according to API specifications. Stir the test sample for
10 minutes with a high speed mixer.
4. Install the inlet cell cap into the inlet end of the cell body. Line up the ar
-
rows on the cap and cell body and tighten the cap locking screws, initially
tightening every other screw. After tightening the cap locking screws, run
your fingers around the cell body to ensure that all of the screws are tight
and none are protruding from the wall.
Operation
Cap Locking
Screws (#170-26-1)
Cell Cap, Scribed
(#170-69)
Cell Cap O-ring
(#170-13-3)
Valve Stem O-ring
(#170-17)
Valve Stem
(#170-16)
Cell Cap
with Screen
(#171-21)
