Replacing The Diaphragm - ProMinent Sigma 1 Supplementary Operating Instructions

Replacement and checking

9.1 Replacing the diaphragm

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WARNING!
Danger from hazardous substances!
Possible consequence: Fatal or very serious inju‐
ries.
Please ensure when handling hazardous sub‐
stances that you have read the latest safety data
sheets provided by the manufacture of the haz‐
ardous substance. The actions required are
described in the safety data sheet. Check the
safety data sheet regularly and replace, if neces‐
sary, as the hazard potential of a substance can be
re-evaluated at any time based on new findings.
The system operator is responsible for ensuring
that these safety data sheets are available and that
they are kept up to date, as well as for producing
an associated hazard assessment for the worksta‐
tions affected.
Damage due to the possible falling of the heavy Sigma 3
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dosing head (types 070410, 070580, 040830 and 041030).
Weight: 32 kg.
Use lifting straps to move the large dosing head.
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1
2
3
4
5
6
7
Fig. 6: Cross-section through the Sigma Hygiene liquid end
1 O-ring
2 Connector piece
3 Valve housing
4 Ball
5 Valve seat
6 Dosing head
7 Diaphragm
Requirements:
Put in place protective measures, if necessary.
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Note the material safety data sheet for the feed chemical.
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Ensure that the system is at atmospheric pressure.
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