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Screw on threaded pipe unions.
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Use an open-end wrench to secure the pump against twisting and screw tightly to piping.
7.1.3
Insulation of the pump in heating systems
Thermal insulation shells (optional accessories) are only permissible in heating applications with fluid tem-
peratures from +20 °C, since these thermal insulation shells are not diffusion-proof when enclosing the
pump housing.
Fix thermal insulation shell before commissioning the pump:
•
Fit the two half-shells of the thermal insulation and push them together so that the guide pins engage in
the opposing holes.
WARNING
Risk of burns from hot surfaces!
The entire pump can become very hot. When retrofitting the insulation during ongoing op-
eration, there is a risk of burns!
• Allow the pump to cool down before commencing any work.
CAUTION
Insufficient heat dissipation and condensate may damage the control
module and glandless motor!
• Do not thermally insulate the glandless motor.
• Ensure all condensate drain openings (Fig. I, Item 3) are kept free.
7.1.4
Insulation of the pump in cooling systems
The Para MAXO-G and Para MAXO-R series are suitable for use in air-conditioning systems, cooling systems,
geothermal systems and similar systems with fluid temperatures down to below 0 °C. Condensate can form
on fluid-carrying parts, e.g. pipes and pump housing.
•
A diffusion-proof insulation must be provided by the customer for application in such systems (e.g. Wilo
Cooling Shell).
CAUTION
Electrical defect!
Condensate that accumulates in the motor can cause an electrical defect.
• Insulate the pump housing only up to the separating gap to the motor!
• Keep the condensate drain grooves unobstructed to ensure that condensate that devel-
ops in the motor can drain off unobstructed!
7.2
Electrical connection
•
Electrical work: a qualified electrician must carry out the electrical work.
66
Installation and operating instructions • Wilo-Para MAXO/-G/-R/-Z • Ed.04/2024-11
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