Metrohm NIRS XDS RapidLiquid Analyzer - Manual (Page 83)

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8
Instrument cooling fans are
operating at maximum rate.
1. Verify that air intake on side is not blocked by
other equipment. Leave at least 3-4 inches (76-
102mm) space by intake fins for proper airflow.
2. Verify that air filter is clean. If not, clean or replace
filter. If fan speeds dropped shortly after opening
fan filter door, this is a sign of a blocked filter.
3. Verify that the fan exhaust area is not blocked,
restricting the fan outflow. Leave at least 3-4
inches (76-102mm) space in by fan exhaust for
proper airflow.
4. Check ambient temperature in area where
instrument is used. If temperature is near the
maximum, fan flow will be high.
9
Instrument cooling fans not
operating.
1. Instrument may not be warmed up. Fans do not
operate until the instrument is near operating
temperature.
2. Ambient temperature may not require fan cooling.
This is common in cool environments.
To check fan operation, cycle the Power Switch.
Note if the fans come on for a short burst,
approximately 25 seconds after power, the fans
are operating properly.
If these measures do not correct the problem, please contact Metrohm service or your next local
distributor.