Maintenance Schedule; Maintenance - Hach Lachat QuikChem Bedienungsanleitung

• Make sure that the deionized water flows through the wash reservoir.
• The sample line is usually not a green-green pump tube. Refer to the
QuikChem method for the correct pump tube.
• Set the peristaltic pump to 35.
• Get to the required temperature before a run is started.
• Allow the reagents to flow at normal speed through the entire system
for at least 15 minutes before a run is started.
• Change the bubble trap membrane once a month or when the
precision is poor or air bubbles are a constant problem.
• Look at the method support data in the QuikChem method and
compare the data to the results. Make sure that the peak height and
area are similar for standards of the same concentration.
• If the instrument and other standard FIA channels run simultaneously,
the sample line for the standard channels can be changed from
green-green to orange-orange. Cut the pump tube like any other
sample line pump tube. Use a dye solution to make sure that the
timing is correct. This change uses less sample.

Maintenance

D A N G E R
Multiple hazards. Only qualified personnel must conduct the tasks
described in this section of the document.
D A N G E R
Electrocution hazard. Remove power from the instrument before doing
maintenance or service activities.
W A R N I N G
Chemical exposure hazard. Obey laboratory safety procedures and
wear all of the personal protective equipment appropriate to the
chemicals that are handled. Refer to the current safety data sheets
(MSDS/SDS) for safety protocols.
12 English

Maintenance schedule

Table 2 shows the recommended schedule of maintenance tasks.
Facility requirements and operating conditions may increase the
frequency of some tasks.
Table 2 Maintenance schedule
Task
Clean the instrument on page 12
Replace a fuse on page 13
Prepare the tubing on page 13
Replace the lamp on page 14
Replace the heater block on page 15
For the maintenance tasks specific to an individual method, refer to the
QuikChem method.
Clean the instrument
N O T I C E
Do not use any cleaning or decontamination procedures other than those
recommended by the manufacturer. Other procedures can damage the
instrument. Contact technical support to make sure that the procedures do not
damage the instrument.
1. Set the instrument to off. Remove power from the instrument.
2. Clean up any spills before the instrument is cleaned.
a. Use baking soda to neutralize acidic spills.
b. Use water to remove the baking soda solution.
c. Dry the area with a lint-free cloth.
3. Clean all surfaces of the instrument with water.
4. Dry all surfaces of the instrument with a lint-free cloth.
Daily Annually As necessary
X
X
X X
X
X