Sanitary pumps
Sanitary pumps
Sanitary pumps
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MAXA and MAXANA<br />
<strong>Sanitary</strong> <strong>pumps</strong><br />
Materials<br />
Pos. Component Material EN/DIN<br />
1 Impeller CrNiMo steel<br />
1.4404/<br />
1.4462<br />
2 Pump housing CrNiMo steel 1.4404<br />
3 Shaft seal<br />
Design variations<br />
See page 20.<br />
Mechanical shaft seal<br />
Grundfos offers these shaft seal arrangements:<br />
• single seal<br />
• double seal, tandem<br />
• double seal, back-to-back.<br />
As standard, MAXA and MAXANA <strong>pumps</strong> are fitted with<br />
a single, inboard, mechanical shaft seal with an optimum<br />
position in the pumped liquid. This ensures efficient<br />
cleaning, cooling and lubrication.<br />
The mechanical shaft seal is designed to DIN EN 12756.<br />
Standard single seals have carbon/stainless steel seal<br />
faces and EPDM O-rings. Other seal face material combinations<br />
are available on request.<br />
See page 53.<br />
Sterile applications: SiC/<br />
SiC/EPDM<br />
Hygienic applications:<br />
Carbon/stainless steel/<br />
EPDM or FKM<br />
4 Pump shaft CrNiMo steel<br />
5 Bearing bracket Stainless steel<br />
6 Coupling<br />
7 Motor<br />
8 Base plate<br />
Standard variation<br />
MAXA L<br />
MAXA CN<br />
MAXANA Adapta ®<br />
MAXANA Bloc<br />
Variation on request<br />
MAXA CN<br />
Maxa VE<br />
MAXA tronic<br />
MAXANA CN<br />
MAXANA L<br />
MAXANA tronic<br />
Steel<br />
Chrome steel<br />
Description<br />
Horizontal installation<br />
1.4571/<br />
1.4462<br />
Horizontal installation, mounted on<br />
base plate<br />
Horizontal installation,<br />
Adapta ® motor stool<br />
Horizontal installation<br />
Description<br />
Horizontal installation, mounted on<br />
base plate<br />
Vertical tank installation<br />
Horizontal installation, motor with built-in<br />
frequency converter (up to 22 kW)<br />
Horizontal installation, mounted on base<br />
plate<br />
Horizontal installation, mounted on<br />
pump foot or motor foot<br />
Horizontal installation, motor with built-in<br />
frequency converter (up to 22 kW)<br />
Standard connection<br />
Grundfos offers Kremo flanges to DIN EN 1092-1 as<br />
standard for MAXA and MAXANA <strong>pumps</strong>.<br />
As standard MAXA <strong>pumps</strong> also come with flanges to<br />
DIN EN 1092-1.<br />
Note: Not all MAXA pump sizes are available with all<br />
connection types. See page 47.<br />
Connections on request<br />
For other connection types as well as applications and<br />
design of connections, see pages 28 to 33.<br />
Features and benefits<br />
• A wide range of foot or base plate options for motor<br />
and pump.<br />
• Extremely reliable operation under most working<br />
conditions.<br />
• Optimised hydraulics for high efficiency - reduced<br />
power consumption.<br />
• Optional location of discharge port on top, on right<br />
or on left side of pump.<br />
• Double mechanical seals, depending on model, with<br />
flushing or barrier fluid.<br />
• Stuffing box in stead of mechanical shaft seal, single<br />
or flushed with C-bearing support to DIN EN 22858<br />
and shaft sleeve.<br />
• Motors with special voltages and frequencies.<br />
• Adapta ® and CN available with a flameproof threephase<br />
motor for ATEX applications.<br />
• Motors for variable speed drive with built-in<br />
frequency converter as "tronic", available for motor<br />
sizes up to 22 kW.<br />
• Pump housing drain connection DN 15; other sizes<br />
available.<br />
• Housing with heating jacket. Applies only to<br />
MAXANA.<br />
• Special paint for motor and steel components.<br />
Surface treatment<br />
As standard, all wetted parts are made of corrosionresistant<br />
chrome-nickel-molybdenum steel.<br />
Grundfos offers industrial, electro-polished variants.<br />
17
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