installation &
operating instructions
Design Envelope 4200h & 4280
End Suction Horizontal Pumping Units
5
1.1.5 storage
Pumps not immediately placed into service, or removed from
service and stored, must be properly prepared to prevent
excessive rusting. Pump port protection plates must not be
removed until the pump is ready to connect to the piping.
Rotate the shaft periodically (at least monthly) to keep rotating
element free and bearings fully functional.
For long term storage (longer than three months), the pump
must be placed in a vertical position in a dry environment.
Internal rusting can be prevented by removing the plugs at
the top and bottom of the casing and drain or air blow out all
water to prevent rust buildup or the possibility of freezing. Be
sure to reinstall the plugs when the unit is made operational.
Rust proofing or packing the casing with moisture absorbing
material and covering the flanges is acceptable. When
returning to service be sure to remove the drying agent from
the pump.
1.1.6 warranty
Armstrong’s warranty period for Design Envelope pumps
is [18] months from date of shipment, or [12] months from
date of installation, whichever comes first. Please refer to File
9.10us / 9.10c for full terms and conditions. To receive an ad-
ditional [6] months of standard coverage, owner may register
the pump unit at
www.armstrongfluidtechnology.com/warrantyregistration
1.1.7 uncrating
Armstrong pumping units are thoroughly inspected before
shipment to assure they meet with your order requirements.
After removing the pump from the packaging, make sure
the equipment is in good order and that all components are
received as called for on the packing list. Any shortages or
damage should be reported immediately. Use extreme care
in handling the unit, placing slings and hooks carefully so that
stress will not be imposed on the integrated controller, pump
or motor. Never place cable slings around the pump shaft or
integrated controls.
1.1.8 handling design envelope 4200h &
4280 pumping units
To handle Design Envelope 4200h & 4280 units when re-
ceived on site, secure the pallet after uncovering the unit, then
hook straps as detailed below and in fig 1.1.1 to lift the pump-
ing unit. Connect one set of lifting straps to the lifting rings on
each side of the integrated motor. A second lifting strap should
be secured around the suction nozzle.
fig 1.1.1
Extra care is required to ensure the integrated controls do not
get damaged during lifting and installation. As the lifting device
is engaged (using a spacer bar if necessary) and the straps
tighten, ensure no part of the strapping is touching any part of
the control or motor fan cover.
The Design Envelope 4200h and 4280 pumping units 1-10hp
are equipped with integral vibration isolators. Note that the
springs are temporarily secured to the pumping unit by 4 sets
of packaging sleeves. These must be removed once the pumps
are positioned in place.
fig 1.1.2
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