Maintenance
C A U T I O N
Multiple hazards. Only qualified personnel must conduct the tasks described in this section of the document.
Clean the sensor
Clean the sensor when:
• Stabilization is slow
• Results drift or are not accurate
1. Soak the sensor in the applicable cleaning agent. Refer to Table 3.
2. Rinse or soak the sensor in deionized water for 1 minute.
Table 3 Cleaning agents
Contaminant Cleaning agent Time
Grease, oils and fats Electrode cleaning solution 2 hours maximum
Mineral buildup 10% hydrochloric acid (HCl) solution 5 minutes maximum
Replace the batteries
When the battery icon flashes or the tester will not come on, replace all four batteries. Refer to Install the batteries
on page 4.
Troubleshooting
Message Possible cause Solution
"- - - -"
(top line)
The parameter value is not within the
measurement range of the tester. Refer to
Specifications on page 2.
Make sure that the value of the sample is within the
measurement range of the tester. Gently clean the
sensor. Refer to Clean the sensor on page 8. Calibrate
as necessary.
"- - - -"
(bottom line)
The temperature value is not within the
operating temperature range of the tester or
a temperature sensor failure occurred. Refer
to Specifications on page 2 for the operating
temperature range.
Make sure that the sample temperature is within the
operating temperature range of the tester. Contact
technical support as necessary.
Note: The tester can still be used if a temperature sensor failure
has occurred, but without automatic temperature compensation.
Battery icon
flashes
The batteries have less than 10% power
remaining.
Replace all four batteries. Refer to Install the batteries
on page 4.
Replacement parts
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.
8
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