Low Suction Cut-Off Panels
For Fire Pump Controllers
Low Suction Cut-off Controls
For Stationary Fire Pumps
The low suction pressure cut-off panel is
designed to shut down stationary fire
pumps receiving water from a municipal
water supply when the water supply
pressure reduces to 20 P.S.I.G. or lower
at the suction side of the pump. Failure
of either normal or supervisory electrical
power to the controller will initiate an
alarm.
Standard Features
Model MLS1715 are for use with electric
motor driven fire pump controllers.
Model MLS1815 are for use with diesel
engine driven fire pump controllers.
* Metron, Inc. assumes no liability for installation of our
Models MLS1715 or MLS1815 low suction cut-off panels
when used on fire pump systems in any manner which
contradicts NFPA 20 (paragraph 2-9.9), which clearly
states that no device shall be installed in suction piping to
restrict the starting, stopping or discharge of a fire pump.
1. An adjustable pressure switch is supplied
with a range of 0 to 20 P.S.l.G. A timer
delays shutdown of the fire pump controller
for a period of 30 seconds after low water
pressure condition is sensed.
2. Supplied with automatic reset after water
pressure is restored to above the cut-off
point. Re-energization of the fire pump
controller is delayed for a minimum of 30
seconds. This prevents too frequent cycling
of the pump motor or engine.
3. Visual signals indicate the following:
• Supply Power Normal
• Supervisory Power Normal
• Low Suction Pressure
4. Audible alarms indicate the following:
• Supervisory Power Failure
• Normal Supply Power Failure
• Low Suction Pressure
A manual alarm silence pushbutton is
provided. Under this condition the audible
alarm is reactivated upon recurrence of any
alarm condition.
5. NEMA 12 enclosure.
Metron, Inc. • 1505 West 3rd Ave., • Denver, Colorado 80223 • (303) 592-1903 • EMAIL: sales@metroninc.com • FAX (303) 534-1947
Bulletin MLS 04/03