Hach LANGE HIAC 9703+, User Manual, Page: 18 / 88

Maintenance
C A U T I O N
Personal injury hazard. Only qualified personnel should conduct the tasks
described in this section of the manual.
N O T I C E
Do not disassemble the instrument for maintenance. If the internal components
must be cleaned or repaired, contact the manufacturer.
Clean the instrument
Clean the exterior of the instrument with a moist cloth and a mild soap
solution.
Clean the syringe
Clean the syringe regularly to keep it working properly. Use a mild
detergent for standard applications. To find whether a different cleaning
solution is compatible with the instrument, refer to
Specifications
on page 3.
1. Put a container with the cleaning solution on the docking module.
2. Push the LIFT/LOWER button to lower the sample probe.
3. Push the LOAD button to fill the syringe with the cleaning solution.
Note: If the plunger does not move easily in the syringe barrel, remove the
plunger, wipe the plunger with alcohol and wet the plunger seal with deionized
water.
4. Allow the solution to stay in the syringe for a minimum of 30 minutes.
5. Push the LOAD button to send the cleaning solution to the drain.
6. Push the LIFT/LOWER button to raise the sample probe.
7. Put a container with distilled or deionized water on the docking module.
8. Push the LIFT/LOWER button to lower the sample probe.
9. Push the CLEAN button to flush the syringe with the rinse water.
10. Repeat the flush with rinse water for a minimum of 10 cycles.
Troubleshooting
Back-flush the system
A large particle can reduce or stop the liquid flow. If this occurs, a flush in
the reverse direction can push the particle out through the sample probe.
1. Put a small waste container under the sample probe.
2. Push the LIFT/LOWER button to lower the sample probe.
3. Push and hold the BACK-FLUSH button until the back-flush cycle
starts.
The syringe fills with liquid from the drain tubing. When the syringe
closes, the liquid is sent through the sensor and sample probe.
4. Repeat the back-flush cycle as necessary until a flush in the forward
direction with a clean sample flows at a normal rate.
Replacement parts and accessories
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 Item no.
Cable, USB, 2 m 460-400-4799
Fitting, probe to HRLD sensor 90630002
Module, small-vial clamp 2089099-01
O-rings, sensor, pkg/4 808-010-200
Power cord, 115 VAC, 6 ft VP623501
Power cord, 230 VAC, 72 in. VP623500
Power supply 230-300-0024
Sampling probe, 14 cm (5.5 in.), large bore 90620008
Stir bar, Teflon, pkg/5 600-100-0003
18 English