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Typical Grinder Pumping System Installation
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(1) Electrical wiring and protection must be in accordance with the
National Electrical Code per NEC articles 500 through 503 for
installation in Class 1, Division 1, Group C & D environments,
and any other applicable state and local electrical requirements.
(2) Install proper full flow check and shut-off valve.
(3) Install proper controls. (Outdoor panels in ventillated areas require
NEMA 3R or 4X enclosure) Float switch connections shall be
intrinsically safe.
(4) All installations require a basin cover to prevent debris from
falling into the basin and to prevent accidental injury.
(5) Cords must be properly sealed per NEC articles 500 through 503
for installation in Class
, Division 1, Group C & D environments,
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to prevent moisture and gases from entering the control panel.
(6) When check valve is installed, drill a 3/16" diameter hole in
the discharge pipe below the check valve even with the top of
the pump. NOTE: The hole must be below the basin cover and
cleaned periodically. Also a vent hole is drilled in the pump hous-
ing. Be sure that this hole is cleared during any servicing.
(7) Vent gases and odors to the atmosphere through vent pipe per
local and state codes.
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© Copyright 2015 Zoeller
®
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All installations must comply with all applicable
electrical and plumbing codes, including, but
not limited to, National Electrical Code, local,
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regional, and/or state plumbing codes, etc.
(8) Secure power cord to avoid entanglement with variable level
float switch mechanism.
(9) Do not reduce pump discharge pipe below 2" IPS size.
(10) Basin must be in accordance with all applicable codes
and specifications regarding Class
D environments. Basin must be sized to allow a minimum
3 minute off-time between starts.
(11) The tethered variable level float switches must be free and not
hang up on pump or pit peculiarities. Float switch circuits shall
be intrinsically safe.
(12) If a rail system is used, it should be non-sparking. Discharge
elbow must be firmly anchored to the bottom of basin. In
fiberglass basin, the bottom will need to be reinforced if the
discharge elbow is used.
(13) If a rail system is used, it should be non-sparking. The guide
rails are 2" schedule 40 pipe for all units. Brass, stainless steel
or galvanized steel is recommended.
(14) Install ring and cable for lifting pump from pit.
(15) Basin must be clean and free of debris after installation and
before operation.
Co. All rights reserved.
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ZEPA0560
, Division 1, Group C &
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