TOCII CA72TOC Maintenance
Endress+Hauser 113
7.10 Filters
7.10.1 Replacing the acid filter
This section describes how the acid filter is replaced.
Replace the acid filter:
• If it is blocked or worn out. This is noticeable from the flow rate and pressure level of the gas
circuit.
• If the zinc or copper are discolored.
a0012500
Fig. 62: Position of the acid filter
You require the following parts (part of the wear parts kit):
• Glass fiber fabric
• Zinc pellets
• Copper powder
a0012316
Fig. 63: Acid filter
1 Coupling 5 Glass fiber fabric
2 Retaining clip 6 Zinc
3 Filter glass body 7 Copper
4 GL coupling 8 Glass fiber fabric