Page 75 - Webster Service Manual

70
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 oper-
ation, 1/2 hp: capacitor start/induction run, TEFC, dual
115/230
volt.
Pumps:
SPM 15, 30, and 65: uses W ebster “2R” Series pump
units.
SPM 135: uses the Webster
ʻ2V” 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
lead-lag 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.
NEMA 1
Enclosure