Webster SPM-30-1 Pump & Motor Assembly

Webster SPM-30-1

FEATURES
The SPM duplex models consist of two pump/motor assemblies with a pre-piped, common discharge manifold. One
pump/motor unit operates continuously, with the second providing backup service if the main pump fails. Either automatic (SPM-DA models) or manual (SPM-DM models) controls
are available.
The duplex automatic series are designed specifically for
buildings where a constant supply of oil must be assured ...
hospitals, apartment buildings, schools and other commercial/industrial buildings
The DA Series is equipped with a pressure sensing device
which detects a loss in pressure of the primary pump. If the
standby pump is brought into service, an alarm sounds which
indicates a malfunction in the primary pump.
The electric control circuit on the duplex automatic pump set
is equipped with a lead-lag switch to permit manual alternation of pump to provide even wear on each pump.
The manually operated duplex pump sets offer the same protection as an automatic except the standby pump must be
turned on manually which requires that maintenance personnel always be available.

SUPPLY UNIT SPECIFICATIONS
SPM Series Supply Units
Single and Duplex
Capacities:
15, 30, 65, and 135 gph
Pressure:
Maximum operating pressure to 80 psi or 200’ of head.
Motors: 
All motors are 60 cycle, 1750 rpm, continuous duty, 48N
frame, 1/6, 1/4, 1/3 hp: split phase, 115 or 230 volt operation,
1/2 hp: capacitor start/induction run, TEFC, dual 115/230
volt.
Pumps:
SPM 15, 35, and 65: uses Webster “2R” Series pump units.
SPM 135: uses the Webster ‘2V” Series pump unit.
Webster 2R and 2V are UL listed
Porting:
SPM 15, 30, 65:
1/4” NPTF—2 inlets, outlet port and top and 
bottom returns
SPM 135:
1/4” NPTF—outlet port
3/8” NPTF—return port, 2 optional inlets.
1/2” NPTF—inlet.
Seal: 
All models—double lip type.
Mounting:
All models — four bolt foot mount
Filter:
Rotary self cleaning type, except in SPM 135. Use of
external line filter recommended.
Valves:
Pressure regulating assembly in pump maintains set 
pressure.
Check valve maintains oil in feeder lines for instant starts.
Gauge:
2-1/2” dia., calibrated from 30” vacuum to 100 psi.
Controls: 
Two Types for Duplex Units Only Duplex automatic with leadlag switch and alarm. Manual with selector switch.
Maximum Inlet Vacuum:
All units—15” Hg
National Fire Protection Association compliance requires fuel
inlet pressure not to exceed 3 psig