For parts or assistance, call Master Plumber Pump Customer Service at
800-628-9439
Installation 3
Performance
Specifications
Power Supply Req. ....................... 115V, 60 HZ.
Liquid Temp. Range .........32°F to 70°F(0°-21°C)
Individual Branch Circuit Req. (min.) ... 15 Amps
Discharge:
Plastic Models ....1-1/4” FNPT / 1-1/2” MNPT
Cast Iron Models ........................1-1/2” FNPT
NOTICE This unit is not designed for
applications involving salt water or brine! Use
with salt water or brine will void warranty. Pump
water only with this pump.
Electrical and switch specifications
Float Switch Installation
Models equipped with vertical switches require
some assembly. See the Switch Assembly
instructions on Page 4. Models with tethered
float switches are ready for use.
Installation
1. Install pump in sump pit with minimum
diameter of 10” (254mm). Sump depth should
be 10” (254mm) for vertically switched
models. Construct sump pit of tile, concrete,
steel or plastic. Check local codes for
approved materials and for proper installation.
2. Install pump in pit so that switch operating
mechanism has maximum possible clearance.
3. Pump should not be installed on clay, earth
or sand surfaces. Clean sump pit of small
stones and gravel which could clog pump.
Keep pump inlet screen clear.
NOTICE Do not use ordinary pipe joint
compound on plastic pipe. Pipe joint
compound can attack plastics.
4. Install discharge plumbing. Use rigid plastic
pipe and wrap threads with PTFE pipe thread
sealant tape. Screw pipe into pump hand
tight plus 1-1/2 turns.
Risk of flooding. Can cause
personal injury and/or property damage.
If a flexible discharge hose is used, make
sure pump is secured in sump to prevent
movement. Failure to secure pump may
allow pump movement, switch interference
and prevent pump from starting or stopping.
5. To reduce motor noise and vibrations, a
short length of rubber hose (1-7/8” (47.6mm)
I.D., e.g. radiator hose) can be connected
into discharge line near pump using suitable
clamps.
6. Install an in-line check valve or an in-pump
check valve to prevent flow backwards
through pump when pump shuts off.
NOTICE If your check valve is not equipped
with an air bleed hole to prevent airlocking
pump, drill a 1/8” (3.2 mm) hole in discharge
pipe just above where the discharge pipe
screws into the pump discharge. Be sure the
hole is below the waterline and the check
valve to prevent air locks.
7. Power Supply: Pump is designed for 115 V.,
60 Hz., operation and requires a minimum
15 amp individual branch circuit. Both pump
and switch are supplied with 3-wire cord
sets with grounding-type plugs. Switch plug
is inserted directly into outlet and pump plug
inserts into opposite end of switch plug.
Risk of electric shock. Can
shock, burn or kill. Pump should always be
electrically grounded to a suitable electrical
ground such as a grounded water pipe or a
properly grounded metallic raceway, or
ground wire system. Do not cut off round
ground pin.
8. If pump discharge line is exposed to outside
sub-freezing atmosphere, portion of line
exposed must be installed so any water
remaining in pipe will drain to the outfall by
gravity. Failure to do this can cause water
trapped in discharge to freeze which could
result in damage to pump.
GPH (LPH) AT TOTAL FEET (M)
Motor
5
10
15
Model
HP
(1.5 m)
(3 m)
(4.6 m)
CAPACITY GALLONS(L)/HOUR
540015 1/4
2,280
1,620
660
18 Ft.
(8,631) (6,132) (2,498)
(5.5 M)
539906 1/3
2,760
2,160
1,410
20 Ft.
(10,448) (8,176) (5,337)
(6.1 M)
539914 1/2
3,200
2,700
2,000
24 Ft.
(12,113) (10,220) (7,571) (7.3 M)
540037 1/3
2,800
2,200
1,400
20 Ft.
(10,599) (8,328) (5,299) (6.1 M)
540045 1/2
3,200
2,700
2,000
24 Ft.
(12,113) (10,220) (7,570) (7.3 M)
No flow
at height
shown
below
Individual
Motor
Branch
Switch Setting
Motor Full Load
Circuit
in inches (mm)
Model HP
Amps Req.(Amps) On
Off
540015 1/4
8.5
15
6
1
⁄
4
”(159) 3”(76)
539906 1/3
9.0
15
8”(203) 4”(102)
539914 1/2
5.5
15
8”(203) 4”(102)
540037 1/3
9.0
15
8”(203) 4”(102)
540045 1/2
5.5
15
8”(203) 4”(102)
