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Installation & User Manual - Sampling Systems
Version 140618 UK
Page 20
Keep in mind
• Maximum suction height: 4 meter.
•
Maximum suction length: 20 meter.
• Avoid siphons in the suction hose.
• Mount the end (inlet) from the suction hose always downward
and on a lower point than the sample chamber.
4.5
Changing sample volume
With vacuum systems the sample volume is adjustable by the length of
the silicon hose (3 in Fig. 4.5a) inside the vacuum chamber (4). The longer
the hose the smaller the sample volume. Standard sample volume is ± 50
cc. Follow the following procedures to change the sample volume.
• Disconnect power supply.
• Carefully loosen the PP glass holder (2) counter clockwise until the
glass (4) is loose from the vacuum head.
• If necessary remove the white bolt from the pincher to create
more working space.
• Determine the length of the silicon hose (3) (lengthen or shorten).
• Reassemble the parts and connect power supply.
4.6
Maintenance Vacuum samplers
Be aware! Remove power supply, compressed air supply and medium
pressure before maintenance or reparations.
Maintenance and reparations should be done by qualified personnel.
Avoid direct contact with wastewater / medium. Wear protective gloves
during use, maintenance and reparations of the sampler.
Be aware! When removing the sample drain hose from the pincher, the
danger of fingers entering the pincher occurs. This can cause serious
injuries.
Points of attention Vacuum samplers
-
Clean the inside of the vacuum chamber.
-
Check if the silicone sample hose is intact, replace if necessary.
-
Check regularly if the suction hose is clean and intact, replace if
necessary.
- Regularly check the air pump capacity.
- Check if the power supply is 24 ± 0,1VDC.
Afb. 2.5 “Correcte installatie”
Fig. 4.5a
Fig. 4.4b