D.
The allen cap screws should be tightened with the torque wrench to 20 foot-lbs in a
rotational sequence. The torque wrench will click when the specified torque is
achieved. This sequence should be repeated two or three times until the twelve screws
are completely tight. It is imperative that the cap be tightened in a consistent and
uniform manner to obtain a good seal. Loosen the top fitting on the cap approximately
1/8 turn.
E.
Insert the sample thermocouple through the side of the test cell and tighten the threaded
gland finger tight and then loosen 1/8 turn.
TEMPERATURE CONTROLLER
The temperature controller utilizes a high alarm setpoint which will bring the unit to an alarm
condition if the temperature ever exceeds this value. An alarm condition is evidenced by the
illumination of the "AL1" annunciator in the upper left hand corner of the display.
If the slurry thermocouple is unplugged
an alarm condition will occur.
To adjust the high alarm setpoint perform the following.
1.
The front cover located on the lower portion of the controller hinges
downward.
2.
Depress the scroll key (the right key behind the hinged panel) until a parameter
appears. Continue to press the key until the parameter "AL1" appears.
3.
Press the "UP" or "DOWN" arrow keys until the desired high alarm setpoint is
obtained.
4.
Wait approximately 10 seconds and the controller will automatically return to the
normal display mode.
TIMER
The Model 200 incorporates a timer for convenience. The timer may be activated by
turning the "TIMER" switch to the "ON" position. It may be reset to zero at the
beginning of a test by depressing the "R" button on the timer's face. The timer has
been set in units of hours and minutes but may be programmed to operate in a variety
of units. The timer incorporates a relay which can be used to automatically control the
water cooling solenoid.
As an example suppose you wish to ramp the temperature up to 350 F in 1 hour and
maintain it for four hours. Setpoint 1 "P1" could be set at 5 hours and set point 2 "P2"
could be set for 7 hours. The timer could be reset by depressing the"R" button and the
"AUTO COOL" switch placed in the "ON" position. After 5 hours the water solenoid
would energize and begin cooling the unit. The unit would cool for 2 hours and then the
solenoid de-activate.
