CPY7B Maintenance
Endress+Hauser 11
6 Maintenance
Routine checks
Regularly check all couplings for leaks
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Version CPY7B-A
Visual inspection
Version CPY7B-B, CPY7B-C
1. Cut off the compressed air supply using the manually operated valve (toggle to
horizontal position).
2. Observe the pressure gauge on the CPY7B. If the pressure has not dropped after 15
minutes, the couplings are leak-tight.
3. If the pressure has dropped, re-tighten the couplings. Check the seal to ensure it is
intact and seated correctly.
NOTICE
Prohibited lubricants
If prohibited lubricants are used, there is a risk of stress cracks forming on the polycarbonate
parts.
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Use only the lubricants approved for the material to lubricate polycarbonate parts, such as
couplings.
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Observe the instructions of the lubricant manufacturer.
Release vessel pressure (only versions CPY7B-B, CPY7B-C)
L
CAUTION
Minor skin or eye injuries are possible as a result of splashing electrolyte
‣
Only ever perform other maintenance work when the system is unpressurized.
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If using an air pump connection:
Release the valve nipple on the cover by one rotation (AF 19).
If using a compressed air connection:
1. Cut off the compressed air supply at the manually operated valve (toggle bar in
horizontal position).
2. Remove the compressed air hose (turn hose union 1 revolution counterclockwise).
3. Release the pressure from the vessel (toggle bar of manually operated valve in vertical
position).
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