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7
OPERATING MANUAL
VERSION 12/2012 ORDER NUMBER DOC 2330426
2 CORRECT USE
2.1 DEVICE TYPES
2.2 TYPE OF USE
2.3 USE IN POTENTIALLY EXPLOSIVE AREAS
A) Metallic versions (aluminum and stainless steel):
Pneumatic double diaphragm pumps with order number
U550.ATRD7 U551.ATSS7 U555.ATSS7
U550.ATSS7 U551.303
U550.ATSS8
U550.STSS7
C) Non-conductive polypropylene versions:
Pneumatic double diaphragm pumps with order number
U552.PTSS7 U553.PHSD7
U553.PTSS7
A) Metallic versions (aluminum and stainless steel) and conductive Acetal:
The unit is suitable for working liquid materials like paints and varnishes in accordance
with the classi cation into explosion classes IIA or IIB.
B) Non-conductive polypropylene versions:
The unit is suitable for working liquid materials like paints and varnishes.
A) Metallic versions (aluminum and stainless steel) and conductive Acetal:
The pneumatic double diaphragm pumps can be employed in explosion hazard zones
(Zone 1).
B) Non-conductive polypropylene versions:
The pneumatic double diaphragm pump must be employed outside of explosion hazard
zones.
B) Conductive Acetal versions:
Pneumatic double diaphragm pumps with order number
U552.GHSS1 U553.GTSS1
U552.GHSS7