Hach HIAC 9705 - Flushing the 9705; Syringe Maintenance; Sensor Port Cleaning

62 of 82 Maintenance Procedures - 9705
KSS - March 2006 - Edition 1
Operator Manual HIAC
5.3 Flushing the 9705
1) Insert a bottle of deionized (DI) water into the Accu-Swirl or connect the Large Volume
Adapter (LVA) to a container of DI water.
2) From the Main Screen, press Flush. Flush as many as times as required by applicable
SOPs. Flushing with at least 10 cm
3
of clean fluid is recommended.
3) Remove water when finished.
5.4 Syringe Maintenance
The Cavro™ syringes provided for the syringe drive perform optimally when these guidelines
are followed:
• Do not run syringes for more than a few cycles without liquid in them.
• Thoroughly flush the syringe with distilled or deionized water after each use.
• If the plunger is removed from the syringe, wipe the plunger with alcohol before
replacement.
• Clean the syringes periodically with a mild detergent. Allow the detergent to sit in the
syringe for 30 minutes or more, then flush the syringe with distilled or deionized water for
at least 10 cycles.
• If the plunger does not move easily in the barrel, remove the plunger and wet the
plunger seal with deionized water.
5.5 Sensor Port Cleaning
The sensor port should be cleaned whenever large particles clog the cell.
1) Remove the clean-out port cap.
2) Retrieve a clean cell cleaning brush from the shipping container.
3) Slide the brush into the cleaning port, shown in Figure 5-1 until resistance is
encountered.
CAUTION:
Excessive pressure will result in brush and possible cell damage. If the brush will not go into
the cell, pull the brush out and inspect the cleaning tip for damage.