Shellab SRI21FV-2 - Manual (Page 8)

8
PRESS AND
HOLD BOTH UP
AND DOWN
ARROWS FOR
3 SECONDS
OR UNTIL
NEXT SCREEN
20.0
20.0 OPer
A
USE UP
OR DOWN
ARROWS
TO SELECT
NEXT SCREEN
DISPLAY
OPer
LooP
PUSH
ADVANCE KEY
REPEATEDLY
UNTIL NEXT
SCREEN
DISPLAY
APPEARS
0.2
db
USE UP
OR DOWN
ARROWS
TO CHANGE
PARAMETER
O.2 TO -5.0
-5.0
db
PRESS INFINTE
KEY REPEATEDLY
TO RETURN
TO HOME
PAGE
20.0
20.0
Changing the parameter from 0.2 to -5.0 allows the compressor to stop cycling on and off and run continuously so the incubator will run stable at set point.
Allow several hours for the incubator to stabilize before calibrating. After incubator has stabilized take a reading from the reference thermometer and
subtract it from the process display. This value can be negative or positive depending on the reading of the reference thermometer. This value is also
called the offset value. See examples on determining offset value below.
PRESS AND
HOLD BOTH UP
AND DOWN
ARROWS FOR
3 SECONDS
OR UNTIL
NEXT SCREEN
20.0
20.0 OPer
A
PUSH
ADVANCE KEY
REPEATEDLY
UNTIL NEXT
SCREEN
DISPLAY
APPEARS
CAL
VALUE #
REFERENCE
THERMO METER
READING
PROCESS
DISPLAY
READING
OFFSET
VALUE
20
20 18
22
2
2
To enter the offset value into the control follow the instruction below.
USE UP
OR DOWN
ARROWS
TO ENTER
THE OFFSET
VALUE
CAL
VALUE #
PRESS INFINTE
KEY REPEATEDLY
TO RETURN
TO HOME
PAGE
20.0
20.0
After the offset value has been entered allow sufficient time for incubator to stabilize and recheck reference
thermometer and process display to make sure they match. If there is a unacceptable difference between
the two renter the new offset value again using the same procedure above. After calibration has been
achieved reset the C.hy parameter back to 0.2 using the same procedure above.
5.7 Set Overtemperture Thermostat: As mentioned in Step 5.2, the Overtemperature Thermostat should be
turned up to the maximum. Also, it is mentioned previously, the Main Control will cycle the compression on
and off causing the temperature to fluctuate up and down across setpoint. To set Overtemperature
Thermostat, turn the Key Knob counter-clockwise when the Main Temperature is at its high point swing just
until the Overtemperature Light activates. Then, turn it clockwise about 1/16 of an inch or until light goes off.
5.8 Low Temperature Control: This control is factory set and should NOT be adjusted. It is pre-set at 1

C and
is an added feature that keeps samples from freezing.
5.9 High Temperature Cut Off: This is a non- settable Thermo Disc that will turn the element off 50˚C to
prevent temperature runaway that could cause permanent damage to the interior of the unit.
5.10 Accessory Outlet: There is an electrical outlet inside the chamber for use with equipment not exceeding
one (1) amp. Note that equipment in the chamber may provide additional heat that could affect the
temperature range of the incubator. It is recommended that testing be done
with the incubator and any
additional equipment to insure that the desired operating conditions can be met.
CAUTION: When operating at normal conditions, this incubator is capable of damaging certain accessory
equipment. Make certain that accessory equipment is capable of operating under the conditions you intend
to run your incubator.