Please read all instructions carefully before installing your new system, as failures caused by
incorrect installation or operation are not covered by the warranty.
I. Applications
The HS series are multistage centrifugal pumps suitable for pressure boosting applications such
as increasing water pressure from city mains or private water systems. They are also suitable for
other applications such as:
- Water circulation
- Liquid transfer
- Irrigation systems
- Lawn sprinkle systems
- Washing systems
- General purpose pumping
II. Operation Conditions
1. Ambient temperature: Max. 40°C (+104°F)
2. Liquid temperature: 4°C(+39°F) ~ +40°C(104°F)
3. System Pressure : Max. 8.5 kg/cm² (121 PSI)
4. Suitable Liquids : Potable water or other clean or non-corrosive liquids.
5. Indoor Use Only
III. Product Features
1. Multistage design provides steady, quiet and vibration-free operation for years of trouble-free
service.
2. Close coupled, space saving design provides easy installation.
3. All parts in contact with water are made from corrosion resistant materials.
4. Capable of transferring both plain and salt water.
5. The pump is installed with thermostat protection switch to protect against dry running. The
pump will shut off when water temperature exceeds 55°C (130°F).
6. The motor has a built-in thermal overload to protect against high operating temperatures and
over current.
7. The pumps will lift water up to 7.6m. with foot valve and pump suction piping filled with water
IV. Installation
1. Choose a site with sold foundation, dry and good ventilation. Please provide accessible space
around the pump and leave at least 12"(30cm ) clearance between your motor end to the wall.
2. The Walrus HS pumps are for indoor use only. When used outdoors, the pump should be in
an enclosure which is out of direct sunlight, water proof, frost free and has adequate
ventilation. Make sure the enclosure is compliant with local regulations.
3. Always mount the pump horizontally on a firm base.
4. Please install the pump as close to water source as possible. The long suction pipes may cause
pressure loss.
5. Ensure all connections are completely sealed using thread tape only. An air leak on the suction
may cause your pump running without discharge flow.
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Summary of Contents for HS Series
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