OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ofite.com
10
The HTHP Filter Press is a very safe instrument to operate as long as the
instructions are strictly followed. It is imperative that the technician thoroughly
understands the assembly and disassembly procedures and also why the
order of steps is in place. Care should be taken to never use defective parts
and that OFITE’s temperature, pressure, and fluid volume limits are strictly
adhered to at all times.
The heating jacket and cell will get very hot during the normal duration of the
test so the operator should take care to avoid burns. The operator should
be careful when attaching and removing pressure manifolds from the heat
-
ing jacket, especially the Back Pressure Receiver assembly, which involves
operating in a small confined space.
Safety Retainer Pin
Always use a Safety Retainer Pin with an attached lanyard, and get in the
habit of securing the cotter pin to the pin. Improper placement of retainer pins
in the past have resulted in the pressure manifold separating from the filter
press which can cause damage to the equipment.
Retainer Pin with Lanyard
171-23-1 Safety Retainer Pin with Lanyard
Normally the 175 mL HTHP Filter Press uses CO
2
bulbs, for both portability
and pressurization. Even though they are small and appear innocuous, they
can contain pressures up to 1,000 psi (6,900 kPa). CO
2
bulbs should never
be allowed to overheat. Exposure to fire or carelessly leaving a box of bulbs
on an automobile dashboard in the sun may result in an explosion. Nitrous
Oxide (NO
2
) which is available in the same sized bulbs as the CO
2
, should
never be used as a pressure source for HTHP filtration. Under high tempera
-
tures and pressures, Nitrous Oxide can detonate in the presence of grease,
oil or carbonaceous material.
CO
2
Bulbs, 10/Box, (#143-05)
