Risk Of Fire - Liberty Pumps XLE100 Serie Manuel D'installation

When connecting an explosion - proof pump in hazardous locations using a rail system, it should be of a non-sparking
type design. Contact Liberty Pumps for available models such as GR22NS-LE and GR30NS.
After the pump(s) have been mounted and the cover sealed, install the remaining discharge line. A union should be
installed just above the cover to facilitate pump removal if necessary. A check valve is recommended after the union
to prevent the backflow of liquid after each pumping cycle. A gate valve should follow the check valve to allow periodic
cleaning of the check valve or removal of the pump. The remainder of the discharge line should be as short as possi-
ble with a minimum number of turns, to minimize friction head loss. Do not restrict the discharge to below 2". Larger
pipe sizes may be required to eliminate friction head loss over long runs. Contact Liberty Pumps or other qualified per-
son if there are questions regarding proper pipe size and flow rates.
Vent: A connection may be provided on top of the cover which must be piped to the existing building vent, or extended
outside on its own standpipe. The vent size should be in accordance with applicable codes, but not less than the dis-
charge size. Some XLE-Series pumps come equipped with an air bleed hole to help prevent air lock. A small spray of
water from this hole is normal while pump is running.
WARNING

RISK OF FIRE -

precautions to minimize ignition sources such as spark and flame
should be minimized to limit the potential for fire or explosion.
WARNING
RISK OF ELECTRIC SHOCK
pump from power source prior to handling, set-up, or
maintenance.
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When working in a hazardous location, all
- Always disconnect the