SHURflo Fresh Water Pump

SHURflo Fresh Water Pump
for use on RVi'Caravans
OPERATION MANUAL - a useful website for owners and enthusiasts of VW T4 Transporter Campervans
Installation and Operation Manual
Shurflo's patented R V Fresh Water Pumps for drinking water were developed to deliver smooth, consistent flow at all ranges of operation, while drawing
low current. T h e balanced diaphragm design incorporates precision ball bearings for long life. E a c h motor is equipped with an integral thermal breaker
and all units are C E approved. R V fresh water pumps are enclosed to prevent incidental moisture from entering; however, they are not intended for environments where splashed water is present. When installed correctly, R V Fresh Water Pumps provide years of quiet operation.
General Information
water pumps meet the essential
health and safety requirements
realizes that in many instances
optimum pump
our pump is being installed
and are in conformity
as a replacement
with the EU EMC directive
pump within an existing
system. The following
as specified
in EN 55014
be considered
The p u m p can be at the same level or b e l o w the water tank. It may be positioned
above the water tank i f needed, as it is capable or a 6 f t (1.8 m) vertical p r i m e .
H o r i z o n t a l inlet tubing w i l l a l l o w p r i m i n g to 30 ft. (9 m).
matically reset and start the operation. T h e p u m p may be mounted in any position
If m o u n t i n g the p u m p vertically, the p u m p head s h o u l d be in the d o w n position so
that in the u n l i k e l y event o f a leak, water w i l l not enter the motor.
C o n s i d e r a dry location that a l l o w s easy access i f maintenance is required. T h e
Use N o . 8 stainless steel hardware to fasten the pump. C h o o s e a s o l i d surface (thic
p l y w o o d ) that w i l l not a m p l i f y p u m p operation. T h e m o u n t i n g feel are intended to
isolate the p u m p from the m o u n t i n g surface; over tightening, flattening, or use o f
oversized screws w i l l reduce the ability to isolate vibration/noise.
p u m p s h o u l d not be located in an area o f less than one c u b i c foot (0.03 m) unless
adequate v e n t i l a t i o n is p r o v i d e d . E x c e s s i v e heat m a y trigger the integral thermal
breaker and interrupt operation. W h e n the temperature drops, the breaker w i l l auto-
The p u m p s h o u l d be on a dedicated ( i n d i v i d u a l ) circuit protected by the specified
fuse as indicated o n the m o t o r label.
W i r e size (gauge/mm*) is based on the distance from the p o w e r source to the p u m |
The m i n i m u m r e c o m m e n d e d size w i r e is N o . 14 gauge ( 2 . 5 m m ) . Lengths o f 2050ft. (6-15m) use N o . 12 gauge ( 4 m m ) .
A s w i t c h rated at or above 15 amps is r e c o m m e n d e d , and must interrupt current
f l o w o n the p o s i t i v e (+ red) lead.
T h e p u m p must be grounded to an earth (battery). T h e earth wire must be the same
size (gauge/mm ) as the positive wire.
T h e total current draw on the circuit must not exceed 15 amps. If the p u m p is used ii
conjunction with other components, overload current protection (fuse or circuit breal
er) and wire size must be for the total amp requirement o f all devices on the circuit.
S h u r f l o recommends at least 1 ft. (0.3m) o f 1/2" ( 1 3 m m ) I . D . flexible h i g h pressure
t u b i n g to both ports. Ideally the p u m p ' s ports/strainer should not be connected to
plastic or rigid pipe. T h e p u m p ' s n o r m a l o s c i l l a t i o n may transmit through rigid
p l u m b i n g c a u s i n g noise, and p o s s i b l y loosen or crack components.
tion w h e n hand tightened. A l w a y s secure barb tubing connections with properly
sized stainless steel c l a m p s to prevent leaks. Never use Teflon tape or sealing compounds o n threads. Sealer m a y enter the p u m p c a u s i n g a failure. Failure due to foi
eign debris is not covered under
Installation o f a 50 mesh strainer is r e c o m m e n d e d to prevent foreign debris from
entering the p u m p .
R a p i d c y c l i n g m a y be caused by excessive back pressure created by one or more o
the f o l l o w i n g w i t h i n a p l u m b i n g system:
The S h u r f l o I n - L i n e Strainer ( 1 / B and 2 / B ) has a twist-lock feature a l l o w i n g s i m p l e
• Water filters and purifiers not on separate feed lines.
c l e a n i n g w h e n p l u m b e d with f l e x i b l e t u b i n g .
• F l o w restrictors i n taps and s h o w e r heads.
S h u r f l o s w i v e l barb fittings p r o v i d e easy r e m o v a l i f maintenance or access is
• S m a l l I . D . lines. P i p e / t u b i n g s h o u l d be at least 1/2" ( 1 3 m m ) I . D . for m a i n lines.
required. T h e fittings are designed with a "taper-seal", creating water tight connec-
• R e s t r i c t i v e fittings and connections ( e l b o w s , " T ' s " , feeder lines to laps, etc.)
Switch Shut-Off
Restrictions in a p l u m b i n g system m a y cause the p u m p to rapid c y c l e ( O N / O F F
w i t h i n 2 sec.) d u r i n g l o w flow demands. C y c l i n g should be m i n i m i z e d to prevent
pulsating flow, and to achieve m a x i m u m p u m p life.
To determine i f adjustment is necessary, turn tap on to l o w e r than average flow o f
c y c l i n g is correct, leave w e l l e n o u g h alone. If the pump is c y c l i n g rapidly increase
the setting b y turning the screw c l o c k w i s e (1 1/2 turn M A X . ) until the p u m p operates for 1 sec. with at least 2 sec. " O F F time"'. If c y c l i n g cannot be m i n i m i z e d consider r e m o v i n g p l u m b i n g restrictions or s i m p l y install a S h u r f l o A c c u m u l a t o r .
water. T h e p u m p s h o u l d c y c l e , but its " O F F t i m e " must be 2 sec. or longer. If the
Fresh water systems require p e r i o d i c maintenance to d e l i v e r a consistent flow o f
fresh water. D e p e n d i n g on the use and the environment the system is subject to, san-
2. M i x into solution the proper amount o f b l e a c h w i t h i n a container o f water.
3. P o u r the s o l u t i o n (water/bleach) into the tank and f i l l the tank with fresh water.
i t i z i n g is r e c o m m e n d e d prior to storing and before using the water system after a
to c o n t a m i n a t i o n , s h o u l d also be disinfected as f o l l o w s :
4. O p e n all laps ( H O T & C O L D ) a l l o w i n g the water to run until the distinct odour
o f c h l o r i n e is detected.
1. U s e one o f the f o l l o w i n g methods to determine the amount o f c o m m o n household bleach needed to sanitize the lank.
5. T h e standard s o l u t i o n must have four (4) hours o f contact l i m e to disinfect c o m pletely. D o u b l i n g the solution concentration a l l o w s for contact l i m e o f (1) hour.
period o f storage. Systems with n e w components, or ones that have been subjected
A ) M u l t i p l y " g a l l o n s ( U K ) or lank c a p a c i t y " by 0.156; the result is ounces o f
bleach needed to sanitize the tank.
6. W h e n the contact time is c o m p l e t e d , drain the tank. R e f i l l with fresh water and
purge the p l u m b i n g o f all sanitizing s o l u t i o n .
B ) M u l t i p l y "litres o f lank c a p a c i t y " by 1; the result is the m i l l i l i l r e s o f bleach
N O T E : T h e sanitizing procedure o u t l i n e d above is in conformance w i t h the
needed to sanitize the tank.
approved procedures o f the U . S . P u b l i c H e a l t h S e r v i c e .
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If water is allowed to freeze in the system, serious damage to the plumbing and the
pump may occur. Failures of this type will void the warranty. The best'guarantee
against damage is to completely drain the water system. However, non-toxic antifreeze for fresh water, available at local RV centres, may be used.
C A U T I O N : Do not use Automotive Antifreeze to winterize drinking water systems.
Such solutions are highly toxic. Ingestion may cause serious injury or death. To
properly drain the system perform the following:
I. Drain the water tank. If the tank doesn't have a drain valve open all taps allowing
the pump to operate (15 min. O N , 15 min. OFF) until the tank is empty.
2. Open all the taps (including the lowest valve or drain in the plumbing) and alh
the pump to purge the water from the plumbing, then turn the pump OFF.
3. Using a pan to catch the remaining water, remove the plumbing at the pump's
inlet/outlet ports. Turn the pump ON, allowing it to operate until the water is
expelled. Turn OFF power to the pump once the plumbing is emptied. Do not
reconnect pump plumbing. Make a note at tank filler as a reminder: "Plumbinj
4. A l l taps must be left open to guard against any damage.
Vibration induced by road conditions or transporting can cause plumbing or pump hardware to loosen. Check for system components that are loose. Many symptom!
can be resolved by simply tightening the hardware. Check the following items along with other particulars of your system.
/ Electrical connections, fuse or breaker, main switch, and ground connection.
/ Is the motor hot? Thermal breaker may have triggered; it will reset when cool.
/ Is voltage present at the switch? Bypass the pressure switch. Does the pump operate?
/ Charging System for correct voltage (±10%) and good ground.
/ For an open or grounded circuit, or motor; or improperly sized wire.
• For seized or locked diaphragm assembly (water frozen?).
(Wo discharge/motor runs)
/ Is the strainer clogged with debris?
/ Is there water in the tank, or has air collected in the hot water heater? •
/ Is the inlet tubing/plumbing sucking in air at plumbing connections (vacuum leak?)
/ Is the inlet/outlet plumbing severely restricted or kinked?
/ Proper voltage with the pump operating (±10%).
/ For debris in pump inlet/outlet valves or swollen/dry valves.
/ Pump housing for cracks or loose drive assembly screws.
/ Output side (pressure) plumbing for leaks, and inspect for leaky valves or toilet.
/ For air trapped in outlet side (water heater) or pump head.
/ For correct voltage to pump (±10%).
/ For loose drive assembly or pump head screws
Are the valves or internal check valve held open by debris or is rubber swolle
Pressure switch operation/adjustment incorrect, refer to shut-off adjustment
/ For plumbing which may have vibrated loose.
S Is the pump plumbed with rigid pipe causing noise to transmit?
/ Does the mounting surface multiply noise (flexible)?
/ For mounting feet that are loose or are compressed too tight.
/ For loose pump head to motor screws. (3 long screws)
/ The motor with pump head removed. Is noise from motor or pump head?
S Pressure switch shut-off adjustment.
/ Water filter/purifier should be on separate feed line.
/ For restrictive plumbing, flow restrictors in taps/shower heads.
/ For loose screws at switch or pump head.
/ Switch diaphragm ruptured or pinched.
/ For punctured diaphragm if water is present in the drive assembly.
Service Kits
(See Fig. 3)
To ensure the correct service kit, order by the complete model number, date of manufacture and name plate data. Part kits come with complete repair instructions.
O Switch/Check valve and Upper Housing K i t (replaces all previous switch designs)
© Motor
© Switch/Check Valve plate assembly
© Complete Pump Head assembly (includes partnos. 1, 2 and 3) (Replaces all pi
© Diaphragm/Drive assembly
Limited Warranty
Shurflo warrants ils RV Duty Fresh Water Pumps to be free of defects in workmanship and materials under normal use) for two years beginning with the purchase
date of the unit.
This warranty does not extend to any Shurflo products which have been misapplied,
improperly installed or altered outside the Shurflo factory.
Accessories & Fittings
Shwflo's warrants its accessories and fittings to be free of defects in workmanship
and materials (under normal use) for one year beginning with the purchase date of
the accessoiy or fitting,
Twist-on strainer*
1/C Accumulator*
Pressure regulator (tap
mounting model*)
(wall mounting model*)
All Products
Shurflo is not responsible nor will it reimburse for labour necessaiy to remove .
reinstall a pump and/or fittings and accessories if found defective.
Shurflo s obligation under this warranty policy is limited to the replacing or ret
ing (whichever it deems advisable) any such part which is returned to Shurflo s
tory with transportation charges pre-paid and which, upon Shurflo's inspection
found defective under the terms of this warranty.
Figure 1
1/A Pump
This warranty does not extend to any Shurflo products which have been misapp
and/or improperly installed.
Figure 2
1/F Mains water supply
1/G Shut-off/Drain valve
Twist-on strainer
2/P Fresh water inlet
2/Q Mount on solid surface
12.5 mm High pressure
2/R Battery or earth
2/S Swivel barb fittings*
Water tank
2/M Stainless steel clamps (x2)
Water heater
2/T Connector
Figure 3
Upper Housing Switcl
Valve Assembly
Drive Assembly
Pump Head
* = Shurflo optional access*
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{MQ) Shut-off/ DrainVjlve
(|/E) (will mounting model*)
(I IB) Twist-On Strainer*
Typical fresh water system shown with optional* SHURflo accessories
Fig 2
Unit 5, Sterling Park
Gatwick Road, Crawley
West Sussex RH10 2QT, England
Tel: +44 (0) 1293 424000
Fax: +44 (0) 1293 421880
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