OFITE, 11302 Steeplecrest Dr., Houston, TX 77065 USA / Tel: 832-320-7300 / Fax: 713-880-9886 / www.ofite.com
10
Operation
1. Make sure the oven is connected to a power supply. Refer to page 12
for instructions on operating the timer. To run a test without a timer pro
gram, set the “OUT1” switch to “ON” on the timer.
2. To turn on the rollers flip the “Motor” power switch to the “On” position.
The white indicator light will come on and the rollers will start turning.
3. To turn on the heaters, flip the “Heat” power switch to the “On” position on
the Control Panel. The heaters and the red indicator light will come on.
The red indicator light will pulsate on and off as the temperature controller
maintains the desired heat. The indicator light will pulsate on and off as
the temperature controller maintains the desired heat.
The circulating fan will automatically turn on when the “Heat” switch
is on. The fan blades can be dangerous when the fan is on. To
prevent injury, always turn the “Heat” switch off when loading and
unloading cells.
4. The upper register on the temperature controller will display the current
temperature, while the lower register will show the current setpoint. Use
the up and down arrow to adjust the temperature setpoint.
The temperature will rise at approximately 150°F (65.5°C) per hour.
5. The oven can be preheated while the samples are being tested and pre-
pared. It is recommended that the samples be placed in the OFITE Aging
Cells for the oven tests. However, the cells for the High-Temperature,
High-Pressure (HTHP) Filter Press may also be used.
Refer to the Aging Cell instruction manuals to determine the ap-
propriate fluid volume for your test conditions. Fluid will expand as
temperature increases so expansion space must be allowed.
If the aging cells are going to be rolled during a test, install o-rings
on the outer perimeter on the top and bottom of the cells. Failure to
do so can damage the rollers in the oven. Teflon (#175-46) and Buna
N (#175-54) o-rings are available. For tests above 300°F (148.9°C),
use Viton o-rings.
