Installation; Hydraulic Connection - Wilo -Zeox FIRST Installation And Operating Instructions Manual

7.2 Installation

Zeox FIRST H unit is studied for horizontal installation only. Proceed as follow:
Using the suitable lifting equipment, place the unit on the foundation and fix the frame by
the suitable anchor points (Fig.4) and tightening them uniformly in the foundation.
• After the installation check the correct alignment of elastic coupling, and re-check after
a short period of running and rectify if necessary.
• The pumping unit is well aligned when a ruler placed on the external face of the half-cou-
plings has the same distance from the axes along all the joint periphery (Fig.5 dimensions
a and b). The shiftings among the two half couplings cannot be more than 0,1 mm.
• Verify, furthermore, that after the assembly there is between the half-joints a small radial
shifting allowance of 3mm on coupling faces (Fig.5).
• For eventual alignment adjustments unloose the bolts fixing the pump/motor to the
frame and insert necessary sized steel shims.
CAUTION! Risk of product damages!
Incorrect alignment can cause serious problems to the whole pumping set.
Zeox FIRST V unit is studied for vertical installation only.
Using the suitable lifting equipment, place the unit on the foundation and fix the base
plate by the suitable bolts tightening them uniformly in the foundation.
There are no special settings to make for the motor/pump coupling.

7.3 Hydraulic connection

CAUTION! Risk of product damages!
Suction and delivery pipes must be correctly fitted and should not be subject to stress
during the pump operation. The pump cannot be used as support for pipes.
See maximum allowable forces and moments on pump flanges in the following tables.
Ensure on suction side that:
• Suction pipe has a diameter larger than the inlet of pump and that the horizontal section
of the suction pipe has an ascending inclination towards the pump of at least 2 %
(see Fig. 3).
• All joints are perfectly airtight.
• Anchorages and supports to prevent damages and possible breakage of suction flange are
properly secured.
• The foot valve is vertically positioned and equipped with grid of adequate size to protect
against possible obstructions (free surface of filter must be minimum twice suction pipe-
line surface).
• The suction pipe has not narrow bends and diameter variations.
Installation and operating instructions Wilo-Zeox FIRST
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