Wilo Helix EXCEL 22 Installation And Operating Instruction page 44

English
5.4 Accessories
The following original accessories are available for
the Helix series:
Designation
2 Round counterflanges, stainless steel, 1.4404
2 Round counterflanges, stainless steel, 1.4404
2 Round counterflanges, steel,
2 Round counterflanges, steel,
2 Round counterflanges, stainless steel, 1.4404
2 Round counterflanges, stainless steel, 1.4404
2 Round counterflanges, steel,
2 Round counterflanges, steel,
2 Round counterflanges, stainless steel, 1.4404
2 Round counterflanges, stainless steel, 1.4404
2 Round counterflanges, steel,
2 Round counterflanges, steel,
Bypass kit 25 bar
Bypass kit with manometer
• IF module PLR for connecting to PLR/interface
converter
• IF module LON for connection to LONWORKS
network. These modules plug directly into
the connection interfaces of the converter
(see Fig. below).
• Non-return valves (with tab or spring ring for
operation at constant pressure)
• Protection kit against dry­running
• Pressure sensor kit for control (accuracy: ≤ 1 %;
use between 30 % and 100 % of the measure-
ment range).
Use only accessories that are new.
44
Article no.
(PN16 – DN50) 4038587
(PN25 – DN50) 4038589
(PN16 – DN50) 4038585
(PN25 – DN50) 4038588
(PN16 – DN65) 4038592
(PN25 – DN65) 4038594
(PN16 – DN65) 4038591
(PN25 – DN65) 4038593
(PN16 – DN80) 4073797
(PN25 – DN80) 4073799
(PN16 – DN80) 4072534
(PN25 – DN80) 4072536
4124994
4124995
Power (kW)
6. Description and function
6.1 Description of the product
Fig. 1
1 ­ Motor fixation bolt
2 – Coupling guard
3 – Mechanical seal
4 ­ Hydraulic stage housing
5 – Impeller
6 – Pump shaft
7 – Motor
8 – Coupling
9 - Lantern
10 - Tube liner
11 ­ Flange
12 - Pump housing
13 ­ Base plate
Fig. 2, 3
1 – Strainer
2 – Pump suction valve
3 – Pump discharge valve
4 - Non-return valve
5 – Drain + priming plug
6 – Venting plug and filling plug
8 – Foundation block
10 – Lifting hook
Fig. A1, A2, A3, A4
1 - Block of DIP switches
2 - Pressure sensor
3 ­ Tank
4 – Insulation valve of the tank
6.2 Product characteristics
• Helix EXCEL pumps are vertical high pressure
non-self priming pumps with inline connection
based on multistage design.
• Helix EXCEL pumps combine use of both high
efficiency hydraulics and motors (if any).
• All metallic parts in contact with water are made
of stainless steel.
• For aggressive fluid, special versions exist with
stainless steel only for all wetted components.
• A cartridge seal is used as standard for all Helix
EXCEL range in order to ease maintenance.
• In addition, for heaviest motor (>40 kgs), a spe-
cific coupling allows to change this seal without
removing the motor.
• Helix lantern design integrates an additional ball
bearing that withstand hydraulic axial forces: this
allows the pump to use a fully standard motor.
• Special handling devices are integrated in order
to facilitate pump installation.
WILO SE 04/2020