Hach Accu4, User Manual

Page: 27 / 52

5. Drain the flow chamber.
a. Turn the internal 3-way valve handle to the CALIBRATE position.
b. Remove the funnel from the holder and hold it below the sensor
height to drain any sample that is still in the sensor.
c. When the sensor is drained, put the funnel in the funnel holder.
6. Slowly open the 3-way valve to let the flow chamber fill with the
sample.
Use an external bubble trap
Remove air bubbles that can be seen from the sample with an external
bubble trap. Refer to
Replacement parts and accessories on page 27.
The manufacturer recommends the use of an external bubble trap for
flow rates higher than 1.9 LPM (0.5 GPM).
1. Install the external bubble trap vertically (air vent up) and upstream
of the sensor. Refer to the instructions supplied with the external
bubble trap.
2. Make sure that the air vent is open. Bubbles will stay in the liquid
when the air vent is closed.
3. Periodically remove the bubble trap drain plug to let any collected
sediment sludge drain.
Replacement parts and accessories
W A R N I N G
Personal injury hazard. Use of non-approved parts may cause
personal injury, damage to the instrument or equipment malfunction.
The replacement parts in this section are approved by the
manufacturer.
Note: Product and Article numbers may vary for some selling regions. Contact the
appropriate distributor or refer to the company website for contact information.
Replacement parts
Description Quantity Item no.
Model T53 controller:
Fuse kit (one 80 mA fuse and one 100 mA
fuse)
1 1000G3315-101
Mounting hardware kit, includes: 1 1000G3228-101
Flat washer, ¼-in. ID 8 8H1346
Ground screw, green 1 8H1275-038
Hex nut, M6 8 8H1116
Mounting bracket 1
1000C4F3217-101
Mounting foot 2 1000B4F3222
Pan head screw, M6 x 1.0 x 20 mm 4 8H1216-075
Pan head screw, M6 x 1.0 x 100 mm for
pipe mount
4 8H1217-400
Pan head screw, M6 x 1.0 x 150 mm for
panel mount
4 8H1217-600
Sealing gasket for panel mount,
Neoprene
1
1000A4F3249-101
Model 8320 turbidity sensor:
Baffle assembly 1 8220G1060
Detector assembly with O-ring set,
includes two detectors
1 8220G1330-204
Flow chamber cover 1 8220C2F1076
Internal 3-way valve for sensor with
attached tubing
1 8320A1074-001
Light source assembly with O-ring set,
includes two light sources
1 8220G1320-204
O-ring, flow chamber 1 5H1288
English 27