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5.11.1 Emptying Collecting Bucket
To prevent overflow from the collecting bucket, empty the bucket after long periods of
precipitation, and latest when the collecting bucket is 80 % full. Once or twice a year is a
suitable interval.
Any overflow causes inaccurate measurements, but does not damage the balance system.
Alternatively, use an accessory drain pump for emptying. In that case, remove the pipe
housing first.
1. Unscrew the three knurled screws on the pipe housing.
2. Remove the pipe housing.
3. Carefully remove the collecting bucket and empty it. If necessary, ask someone to help.
A full collecting bucket is heavy. Handle the collecting bucket carefully,
so that it does not fall and injure you or damage the balance system.
CAUTION!
4. Position the pipe housing (note the position of the alignment aid).
5. Retighten the three knurled screws.
5.11.2 Adding Anti-Freeze Solution
The freezing of the collected precipitation of > 200 mm (7.87 in) deforms the collecting
bucket floor, tips the bucket, and makes the bucket lean against the pipe housing (force
shunt). This causes inaccurate measurement results.
To prevent the collecting bucket floor from deforming if the collected precipitation freezes in
sub-zero temperatures, add anti-freeze solution. The manufacturer recommends that you
use Thermoschema's POWERCOOL DC 924-PXL.
For the correct proportion of anti-freeze solution and information on using other anti-freeze
solutions than POWERCOOL DC 924-PXL, see
OTT Pluvio
2
L Precipitation Gauge Operating
Instructions
.
Always dilute the anti-freeze solution before adding it. Anti-freeze solutions
have hygroscopic properties.
CAUTION!
If necessary after precipitation, manually make sure that the anti-freeze solution is well
mixed in the collecting bucket. Vibration caused by manual mixing may temporarily produce
incorrect results.
AWS310-SITE Configuration and Maintenance Manual
M211828EN-C
108
Содержание AWS310-SITE
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