911-352 Rev. H 10/99 Page: 1 of 2
SW ITCH
FUSE
FAU CET
(T
ical
otable water s
stem sho w n with o
tional SHURflo accessories)
WATER TANK
SHURflo
PUM P
ACCUM ULATOR
TW IST-LO CK STRAINER
1/2" THREADED OR
1/2" BARB IN-LINE MODELS
SHUT-OFF/
WATER HEATER
CITY WATER
WATER PRESSURE
IN-LINE FAUCET
ADAPTER
WALL MOUNT MODELS
REGULATOR
FILTERED WATER
DRAIN VALVE
VENT
OR
*
*
*
SCREW
IN-LINE STRAINER
SW IVEL BARB FITTINGS*
(No Sealer Req. Do Not Overtighten)
CONNECTOR
OR HEAVIER WIRE
2
(* Included with retail pum p kits)
POTABLE WATER
INLET
(15 Am p Min.)
SW ITC H
FUSE
Batt.+
WITH #8 HARDW ARE
COACHFRAME OR
"KNOW N GROUND"
MOUNT TO A SOLID SURFACE
(See motor label for the
recom m ended am p fuse.)
(50 Mesh)
Red
Black
(Water-proof)
# 14
[2 .5 Mm ]
GAUGE
S
STAINLESS STEEL
CLAM PS (2 REQ.)
1
/
2
"
I.D.
FLEXIBLE BRAIDED
(high psi.)
TUBING 12 in. LEN G TH S
(recom m ended)
POTABLE WATER PUMP
Installation and Operation Manual
SHURflo has supplied pumps to the manufacturers of RV's for
over 30 years. Our patented Tri-a-fram
®
line of potable water
pumps deliver smooth, consistent flow at all ranges of operation,
while drawing low current. The balanced diaphragm design
incorporates two precision ball bearings for long life.
SHURflo pumps are
100%
tested for proper operation before
they leave the factory. When installed correctly, SHURflo
water pumps will provide years of quiet operation.
A SHURflo pump in combination with a low back pressure
water system can exceed all expectations. For unmatched
reliability and trouble-free performance request SHURflo's
complete line of water system products.
GENERAL INFORMATION
SHURflo realizes that in many instances our pump is being installed as a replacement pump within an existing system.
The following guidelines should be considered to achieve optimum pump operation
MOUNTING
●
The pump can be at the same level or below
the water tank. It may be positioned above
the water tank if needed, as it is capable of a
6 ft.
[1.8
M
]
vertical prime. Horizontal inlet tubing
will allow priming to 30 ft.
[9
M
]
.
●
Consider a location that allows easy access
if maintenance is required. The pump should
not be located in an area less than one cubic
foot unless adequate ventilation is provided.
Excessive heat may trigger the integral
thermal breaker and interrupt operation.
When the temperature drops the breaker will
automatically reset and start operation.
●
The pump may be mounted in any position. If
mounting the pump vertically, the pump head should
be in the down position so that in the unlikely event
of a leak, water will not enter the motor.
●
Use
#
8 hardware to fasten the pump. Choose
a
solid
surface
(thick plywood)
that will not
amplify pump operation. The mounting feet
are intended to isolate the pump from the
mounting surface; over-tightening, flattening,
or use of oversized screws will reduce the
ability to isolate vibration/noise.
ELECTRICAL
●
The pump should be on a dedicated
(individual)
circuit, protected by the specified fuse indicated
on the motor label.
●
A switch rated at or above 15 amps is
recommended, and must interrupt current flow
on the positive
(
+
red)
lead. Marine applications
should use
U/L
approved marine duty
(ignition
protected)
switches and pumps.
●
Wire size
(gauge/
M
m
2
)
is based on the distance
from the power source to the pump.
Recommended size wire is
#
14 gauge
[2.5
M
m
2
]
.
For lengths of 20-50ft.
[6-15
M
]
use
#
12 gauge
[4
M
m
2
]
.
●
The pump must be grounded to a "known
ground"
(frame)
. The ground wire must be the
same size
(gauge/
M
m
2
)
as the positive wire.
●
The total current draw on the circuit
must not
exceed 15 amps. If the pump is used in
conjunction with other components, overload
current protection
(fuse or circuit breaker)
and
wire size must be for the total amp
requirement of all devices on the circuit.
PLUMBING
●
SHURflo recommends at least 1ft.
[.3
M
]
of ½"
[13mm]
I.D. flexible high pressure tubing to both
ports. Ideally the pumps ports/strainer
should
not
be connected to plastic or rigid pipe. The
pump's normal oscillation may transmit through
rigid plumbing causing noise, and possibly
loosen or crack components.
●
Installation of a 50 mesh strainer
(SHURflo P/N
170)
is recommended to prevent foreign debris
from entering the pump.
●
SHURflo swivel barb fittings provide easy
removal if maintenance or access is required.
The fittings are designed with a "taper-seal",
creating a water tight connection when
hand-
tightened
.
Neve
r
use Teflon tape or sealing
compounds on threads. Sealer may enter the
pump causing a failure.
Failure due to foreign
debris is not covered under warranty
.
Always secure barb tubing connections with
properly sized stainless steel clamps to
prevent leaks.
●
Rapid cycling may be caused by excessive
back pressure created by one or more of the
following within a plumbing system:
Water filters not on separate feed lines.
Flow restrictors in faucets and shower heads.
Small I.D. lines. Pipe/tubing should be at
least ½"
[13mm]
I.D. for main lines.
Restrictive fittings and connections
(elbows,
"T's", feeder lines to faucets, etc.)
SWITCH SHUT-OFF
Restrictions in a plumbing system may cause the
pump to rapid cycle
(ON/OFF within 2 sec.)
during
low flow demands. Cycling should be minimized
to prevent pulsating flow, and to achieve
maximum pump life.
To determine if adjustment is necessary, turn a
faucet
ON
to lower than average flow of water.
The pump should cycle, but its "
OFF
time" must
be 2 sec. or longer. If the cycling is correct,
leave well enough alone. If the pump is cycling
rapidly increase the setting by turning the screw
clockwise
(1½ turn
MAX
.)
until the pump operates
for 1 sec. with at least 2 sec. "
OFF
time". If
cycling cannot be minimized consider removing
plumbing restrictions or simply install a
SHURflo Accumulator.
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