Watts HF scientific 28052, Owner'S And User'S Manual, Page: 52 / 67

Catalog No. 29290 45
Rev 3 06/2020
10. The instrument will return to the AUTO mode with the offset
mathematically added to the reading.
5.0 Operation
Prior to use for the first time, the supplied desiccant pouch will
need to be installed .
5.1 Installing or Replacing the Desiccant Pouch
The MTOL+ continuously checks the condition of the desiccant. When the
desiccant gets in such a condition that it may cause problems, the
instrument will display DESC on the lower portion of the display to indicate
the presence of humidity.
Proper use of the supplied desiccant is essential in maintaining the
performance of the instrument. The desiccant has been designed to have
a long life; however, replacement of the desiccant pouch will be required
from time to time.
It is essential that the enclosure seal on the instrument base be
maintained to ensure adequate desiccant life. Inspect the seal each time
the desiccant pouch is replaced. Replace or reseat the seal if it is found to
be defective.
The desiccant should be replaced when the instrument displays
DESC
.
A new, sealed desiccant pouch and indicator card are available from HF
scientific part #21555R.
1. To initially install or remove the old desiccant, simply unscrew the four
corner thumbscrews and remove the electronics half of the instrument.
2. If replacing an old desiccant pouch, remove the used desiccant pouch
from the instrument.
3. Open the bag protecting the new desiccant pouch.
4. Insert the new desiccant pouch in the instrument base assembly.
5. To speed up the recognition, of the new desiccant, by the instrument, it
may be necessary to reset the instrument by disconnecting the sensor
interconnect cable for 2 seconds and then reconnecting it.