vetus WP1208B Automatic Diaphragm Water Pump Instruction Manual
- June 9, 2024
- vetus
Table of Contents
vetus WP1208B Automatic Diaphragm Water Pump
Introduction
The pump is intended to be used as a pressur-ized water system on yachts and
small craft. Possible other applications are pumping of flu-ids for cleaning
purposes or water purification. In a pressurized water system the pump will be
switched on immediately after the pressure has dropped when water is tapped
ensuring a continuous flow of tap water.
Following the recommendations below will re-sult in a longer life and better
performance of your water pressure pump.
- Ensure that the water supply tank is always full; although the pump can still run when dry, this will prevent unnecessary dry run-ning.
- Check that the battery voltage is correct. Battery voltage loss can be reduced by us-ing cables of sufficient cross sectional area.
- Ensure that the pressurized water system is properly prepared for winter before the temperature falls below zero. Otherwise, irreparable damage may be caused to the system.
- Carry out the maintenance described regu-larly.
Installation
General
Always install the pump in accordance with the applicable regulations of the country con-cerned.
Position
- See ‘9 Installation recommendations’ on pages 46 and 47.
- The pump may be positioned at the same level or lower or higher as the tank; the maximum priming height is is 1.8 m (6 ft).
- The maximum suction line length (hori- zontally) is 9 m (30 ft).
- The pump can be mounted in any posi-
- The space in which the tank is placed should be dry and properly ventilated. The pump should be 1 cm (3/8”) free all round from bulkheads or other equipment, to provide ventilation. Do not locate the pump in a space less than 0.03 m3 (30 dm3, 1 cubic foot) unless adequate ventilation is pro-vided. In case of overheating the integrated thermal protection will interrupt operation. When cooled down sufficiently the pump will resume operation.
- Position the pump in such a way that it is readily accessible for inspection.
- There must be sufficient free space available to perform maintenance on the pump.
- Also ensure that there is sufficient free space for the hose connections. These must be easily accessible during installation.
- Make sure that the foundation for the pump is strong enough to secure it properly.
- Do not over tighten or use oversized screws to fit the pump to the foundation to mini-mize transfer of vibration and noise.
Connections
Install the strainer and the hose connectors to the pump, see ‘8 Connections’ on page 39.
Warning
Never use Teflon tape or sealing compound onthe thread.
Tip
The hose connectors provided are designedwith a ‘taper seal’, creating a water
tight sealwhen hand tightened.
Connect the pump with at least 30 cm (1 ft) of a good quality reinforced
flexible hose (12.7 mm, 1/2”). Avoid sharp bends and kinks or sagging in the
hose.
The reinforced hose must be of quality suitable for drinking water and
resistant to a tempera-ture of at least 50 degrees C (122 degrees F) and a
pressure of 5 bar (5 kgf/cm2, 70 psi).
Vetus supplies a hose suitable for tap water. It is tasteless, non-poisonous,
resistant to tempera-tures from -5 to +65 degrees C (+23 to +149 degrees F).
Article Code: DWHOSE12A, drinking water hose, 12.7 mm (1∕2”) internal diameter
- Fit every hose connection with a good stain-less steel hose clip.
Warning
Never connect the pump directly to rigid tubing.
Note
If the system is installed using stainless steel or copper piping, the pump
must still be connected using short sections of hose
Caution!
Care should be used when applying sealers (sealing compound or Teflon tape) in
the tubing from tank to pump. Sealers may enter the pump valves, causing no
prime or no shut-off. Failures due to foreign debris are not covered under the
warranty.
Electrical installation
- Check that the voltage stated on the identi-fication plate is the same as the battery volt-age (12 or 24 V).
- Consult the wiring diagrams on pages 48 and 49 when connecting the pump. Extend the connector wires if required. Use good quality wire connectors together with the right wiring pliers! Make sure that all elec-trical connections remain dry under normal conditions in order to prevent electrolysis and corrosion.
- The minimum cross-section for the connec-tion wires is 2.5 mm2 (AWG 14). The voltage drop between battery and pump should not exceed 10% of the supply voltage.
- Use a relay to operate pump model WP1220B; see electrical diagram on page 49.
- A main switch* and a fuse** must be incor-porated in the positive cable.
- Connect ‘+’ and ‘-’ as shown in the diagram.
The switch must be rated for 15 Amps.
Consult the wiring diagrams on pages 48 and 49 for the correct value of the
fuse.
Use and Maintenance
The pump is designed for intermittent use only, e.g. for supplying water to a household tap or shower.
Disinfecting
When using for the first time:
Disinfect the tank by filling it with a solution of bleach in water (1 :
1000). Circulate this dis-infecting mixture through the drinking water system.
Remove the solution and rinse the tank with clean drinking water.
- Calculation of the amount of common household bleach needed to disinfect the tank:
- Use 1 millilitre of bleach for each litre tank capacity.
- Or use 0.13 ounces (oz) of bleach for each US gallon of tank capacity.
At the beginning of the sailing season:
Disinfect the tank and prevent the growth of algae at the same time by filling the tank with a solution of clear vinegar in water (1 : 20). Leave the vinegar solution in the tank for at least 24 hours, the longer the better. Remove the vin-egar solution and rinse the tank several times with clean tap water.
Winter preparation
The pressurized water system as part of the whole drinking water system should always be drained.
- Drain the water tank.
- Use the drain valve of the tank.
- Open a tap so that the pump will run; let the pump continue to run for about 30 seconds after the tank is empty.
- Use the pump to drain the tank, open the tap(s) fully and let the pump run (15 min. ON / 15 min. OFF) until the tank is empty; let the pump continue to run for about 30 seconds after the tank is empty.
- Remove the plumbing from the inlet and outlet connection of the pump. Switch the pump ON, allowing it to operate until the water is expelled. Switch off the pump.
- Disconnect the power connections to the pump.
- Do not reconnect the plumbing. Make a note at the tank filler as a reminder. ‘Plumb-ing is Disconnected’.
Anti-freeze
Never fill the drinking water system with anti-freeze to protect it against
freezing unless a safe non-toxic anti-freeze for potable water is available.
Most anti-freezes are very poisonous!
Flush the drinking water system thoroughly at the start of the summer season,
if a non-toxic anti-freeze for potable water has been used to protect the
system during the winter.
Troubleshooting
| Problem | Possible cause | Solution |
|---|---|---|
| Motor runs but there is no flow of water. | Empty water tank | Fill the tank or |
disconnect the power to the pump.
Inlet / outlet tube restriction.| Remove restriction.
Strainer clogged with debris.| Clean strainer.
Leak in the suction pipe.| Tighten the hose clamps and check the fittings.
Motor does not run| No power on pump circuit.| Check wiring, fuse or circuit
breaker.
Loose or corroded electrical con- nections.| Check the electrical connections.
Short circuit in wiring.| Check condition of wires.
Thermal protection of motor has been activated (motor is too hot).| Wait until
there is an automatic reset.
Faulty motor.| Replace pump.
Faulty pressure switch.| Replace pressure switch assembly.
Locked drive.| Replace pump.
Pump continues to run after all taps have been closed.| Empty water tank|
Refill.
Pump cycles while tap is closed.| Leak in the system.| Tighten leaking hose
clamps / fittings.
Faulty pressure switch.| Replace pressure switch assembly.
Incorrect voltage.| Check voltage (± 10 %).
Air trapped in system.| Open a tap as close to the pump as possible.
Leak in outlet tubing.| Check plumbing for leakage.
Low pump capac- ity or pressure.| Dirt in inlet filter.| Remove cover and
clean filter.
---|---|---
Worn wobble plate.| Replace pump.
Worn diaphragm.| Replace pump.
Inlet / outlet tube restriction.| Remove restriction.
Inlet air leak.| Tighten fittings / Replace cracked fittings.
Faulty pressure switch.| Replace pressure switch assembly.
Incorrect voltage.| Check voltage (± 10 %)
Pump leaks.| Loose fasteners.| Tighten fasteners.
Pump seals degraded.| Replace pump.
Leak in diaphragm.| Replace pump.
Noisy or rough operation.| Flexible mounting surface.| Mount pump on rigid
surface.
Loose pump head.| Tighten fasteners.
Compressed base feet.| Decompress base feet.
Rigid plumbing.| Plumb pump with flexible plumb- ing.
Disconnect the power and drain the system be-fore beginning work on the pump!
Technical data
Dimensions principles
Raccords
Installation recommendations
Wiring diagrams
- Pump
- Relay
- Switch
- Fuse
- Battery
- A Red
- B Black
| pos. | qty | part | description |
|---|---|---|---|
| 1 | 1 | VP000139 | Pressure switch for WP_08B |
| 1 | 1 | VP000140 | Pressure switch for WP_13B |
| 2 | 1 | WPSET | Set connection parts |
| pos. | qty | part | description |
|---|---|---|---|
| 1 | 1 | WP20PS | Pressure switch for WP_20B |
| 2 | 1 | WPSET | Set connection parts |
Total length of positive and negative cables < – > Wire cross-section
- 0 – 10 m < – > 2.5 mm2
- 0 – 28 ft < – > AWG 14
- 10 – 16 m < – > 4 mm2
- 28 – 44 ft < – > AWG 12
This product complies to the requirements of EC Directive
Fokkerstraat 571 – 3125 BD Schiedam – Holland
Tel.: +31 (0)88 4884700 – sales@vetus.com –
www.vetus.com
Printed in the Netherlands
050406.03 2020-11
References
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