15
OPERATION:
(Con’t)
USING THE OPTIONAL PORTABLE LIGHT BANK:
Load the shaker platform and set the temperature before placing the light
bank over the unit. When the chamber has reached the proper temperature and
the shaking speed is at the desired level, place the light bank over the chamber.
Turn on the switch to light the light bank. The hood cannot be opened when the
light bank is in place. To gain access to the chamber, move the light bank to
one
side and then open the hood.
CAUTION:
USE ONLY THOSE ACCESSORIES AND ATTACHMENTS THAT
ARE SHIPPED WITH THE UNIT OR ARE SPECIFIED FOR USE WITH THE
UNIT. THE SUBSTITUTION OF OTHER ATTACHMENTS OR ACCESSORIES
CAN PRODUCE HAZARDS AND/OR RENDER THE UNIT INOPERATIVE.
OPERATING PNEUMATIC SPRING-CONTROLLED COVER:
CAUTION:
DO NOT FORCE COVER OPEN
. TO AVOID DAMAGE TO THE
CLEAR PLASTIC COVER, EXERCISE CARE WHEN RAISING AND
LOWERING IT. TO RAISE COVER, LIFT IT AT THE HANDLE TO A POINT
APPROXIMATELY 18" ABOVE THE UNIT. WAIT UNTIL YOU FEEL THE
PNEUMATIC SPRING TAKE OVER. IT WILL CONTINUE TO RAISE THE
COVER AND THEN HOLD IT OPEN AT AN APPROXIMATELY 80-DEGREE
ANGLE. AN OPENING PRESSURE OF APPROXIMATELY 4 POUNDS IS
REQUIRED TO START PNEUMATIC SPRING OPERATION IN THE UPWARD
DIRECTION. EXCESSIVE PRESSURE OR FORCE BEYOND THAT CAN
DAMAGE THE COVER.
CAUTION: DO NOT FORCE COVER TO BEGIN CLOSING MOTION
. THE
SAME CARE SHOULD BE USED WHEN CLOSING THE COVER. A CLOSING
PRESSURE OF APPROXIMATELY 5 POUNDS IS REQUIRED TO START
PNEUMATIC SPRING OPERATION IN THE DOWNWARD DIRECTION. BE
SURE TO RETAIN CONTROL OF THE HANDLE IN LOWERING THE COVER
TO AVOID HAVING IT SLAM CLOSED.
TEMPERATURE CALIBRATION:
Fill a 250-ml Erlenmeyer flask with approximately 100 ml of water and
position at the center of the shaking platform. Install a thermocouple inside the
flask with the thermocouple junction in direct contact with the water.
Adjust the safety thermostat to its maximum clockwise position. Adjust
the setpoint temperature, using the Up and Down keys, to read 37ºC or any
other desired setpoint. Allow sufficient time for the temperature to stabilize—1 to
2 hours.
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