YOKOGAWA EXA TB TB400G, Руководство пользователя

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<4. OPERATION>
4-1
IM 12E04A02-02E 9th Edition : Mar. 16, 2018-00
4. OPERATION
4.1 Preparation for Operation
For preparation, proceed with the work in turn according to the items in subsections 4.1.1 to
4.1.9.
Since the types and number of values vary with the specifications for sampling, automatic
cleaning, and automatic zero calibration (Suffix code: -NN, -KC, -A1, -A2, and -A3), see the
piping diagrams in Section 2.6. For meaning of the codes, see Section 2.3.
NOTE
When the detector is opened for preparation, take extreme care not to get the lenses in the
detector (in two places) dirty.
If they get dirty, clean the lenses (see Section 7.8).
4.1.1 Checking Piping and Wiring Conditions
Examine that the piping and wiring have been done properly.
4.1.2 Supplying Power
First confirm that the power supply is of the voltage and frequency that meet the specifications.
Also, check that the cap of the fuse holder in the converter is securely tightened.
Turn on the power switch in the converter. Then, press the [MODE] key on the converter to go to
the <MAINT.> mode.
4.1.3 Supplying Zero Water
If the turbidity to be measured is higher than 200 mg/L, remove the filter element and use tap
water directly as zero water.
(1) Supply tap water of the predetermined specifications (see Section 2.1) to the tap water inlet.
(2) Close all the values except V2 and SV4 (for the Suffix code: -A3).
Note: Use the value operating keys of the converter to operate SV1, SV2, SV3, and SV4.
(3) Vent the air by loosening the knob of the air vent on the top of the filter until tap water spills
over. After air venting is completed, tighten the knob securely.
(4) Loosen screw A at the lower part of the detector (see Figure 4.1) to open the detector.
(5) Gradually open V3 and confirm that the water surface becomes as smooth as a mirror finish
as shown in Figure 4.2 (b).