YOKOGAWA TB830D, User Manual, Page: 64 / 85

<8. MAINTENANCE>
8-3
IM 12B01B30-02EN 1st Edition : Mar. 08, 2023-00
(4) After cleaning is completed, discharge any remaining contaminants by supplying tap water
or repeat filling the tank two or three times with zero water and then draining it until all of the
contaminants in the head tank is discharged with the water.
(5) End.
( Good ) ( No good )
After washing head tank,
align bleeder holes down.
If you align bleeder holes
up then bubbles (froth) may
cause problems.
Drain pipe
Figure 8.2
CAUTION
After cleaning the head tank, be sure to align the holes down. If you align bleeder holes up,
bubbles (froth) may cause problems.
8.4 Checking and Replacing Desiccants
CAUTION
Stop supplying power to TB830D prior to opening the detector top cover. Make sure that the
power supply of TB830D is not turned on. Do not touch the terminals while the power supply of
TB830D is on.
Inspect the desiccant once every six months, and replace the desiccant if necessary. Regardless
of the inspection results, replace the desiccant once a year.
Keep the internal storage circuitry of the detector unit dry to ensure correct readings. Remove the
desiccants and check for softness with the hand. Desiccants soft textured in gel form should be
replaced.
(1) Stops supplying Power Supply to TB830D.
(2) Loosen the four (4) fixing screws and remove the front cover of the detector unit.
(3) Remove the desiccants and check for softness with the hand. Desiccants soft textured in gel
form should be replaced.
(4) Install the desiccant. Mount the desiccant so that the printed side is facing the cover. (See
Figure 8.3.)
(5) Attach the front cover by fastening the four (4) screws. The tightening torque of the screw is
1.5 N·m.
(6) This completes the replacement.