Walrus HS Series User manual

HS Series
Instruction Manual
MultiStage Centrifugal Pump
WALRUS PUMP CO., LTD.
ISO 9001 Certied

EC Declaration of Conformity
Manufacturer:
Walrus Pump Co., Ltd.
Address:
No. 83 -14, Dapiantou, Sanjhih Township, Taipei County 252,
Taiwan
Declare that the machinery described:
Name : Water Pump
Model : HS Series
Conform to the following directive:
2006/42/EC—Machinery directive
2014/35/EU—Low voltage directive
2014/30/EU—EMC (Electromagnetic compatibility) directive
Refer to the following standards:
EN ISO 12100:2010 EN ISO 13857:2008
EN 809:1998+A1:2009
EN 60335-1:2002 EN 60335-2-41:2003
EN 61000-6-2:2005 EN 61000-6-3:2007
R&D department manager: Kao Tien-chuan
Manager:
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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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a. Remove the filling plug b. Fill water in chamber c. Replace the filling plug
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6. Make sure the environment of your pump site free from abrasive liquid, PVC, metal chips or
anything else that will damage your equipment.
7. The pump has a built-in check valve; please do not install any other valve on the suction.
8. For best performance use pipes at least the same diameter as the pump's inlet and delivery
outlet openings. It is recommended to use metal hose for outlet piping.
9. Do not let your pump run when there is no water available or water temperature is over 40°C
(104°F).
10. In general the motor has dual voltage supply and the factory has preset the voltage before
shipping.
11. For your safety, please hook up a circuit breaker and connect grounding connections to the
pump in accordance with local regulations.
V. Operation
1. Before starting, the pump must be primed. Please follow the procedure as shown in Fig 1.
2. When the pump inlet is lower than the water supply level, please remove the filling plug to let
water back flow to the chamber. It can be repeated as many times as necessary till the air is
completely released from system. Then, replace your filling plug.
3. For start up of the first operation or after long time inactivity, please place a screwdriver
against the shaft at motor end and turn clockwise to see if rotor spins freely. (Fig. 2). If it is,
you are free to run the pump.
Fig. 2
Fig. 1

VIII. Dimensions: (mm)
HQ400 / 800
4. When the pump is running normally, please measure the running current with a wattmeter. If it
exceeds the rated value on nameplate, please check if your power supply voltage is within
±10%. Please contact your pump supplier if you are not sure how to correct it.
VI. Wiring diagram
WARNING:
Risk of Electric Shock - This pump is supplied with a grounding conductor and grounding-type
attachment plug. To reduce the risk of electric shock, be certain that it is connected only to a
properly grounded, grounding-type receptacle".
This mark located outside the connection box is a warning for an electrical hazard.
Before operation, please check if the voltage is correct and be sure if the circuit
breaker and grounding connectors are all connected in accordance with local regulations.
Single-phase power supply
L2
Input power Grounding
L1
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A (mm)
292
344
B (mm)
91
96
C (mm)
96
101
Model
HS400
HS800

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VIII. Troubleshooting
IX. Maintenance and service
Under normal operating conditions, the pump is maintenance free. It is especially critical, when
the ambient temperature reaches 40°C (104°F), to keep your pump site dry and maintain good
ventilation. It is always advisable to provide accessible space around the pump.
You may refer to troubleshooting check list to find out a quick solution for your problems.
However if the problems are still existed after your attempts or you need other services, please
contact your pump supplier. Do not attempt to disassemble the pump as it will void your
warranty.
Before starting work on the pump, make sure that the electricity supply has been
switched off and that it cannot be accidentally switched on.
Problem
1. pump does not
start
2. Pump cuts out
during operation
3. Electric shock
4. Pump runs
normal but with
very low
discharge flow
Cause
a. No power supply
b. Too low/high voltage
c. Seized-up pump
a. Seized-up pump
b. Overloaded motor
c. Poor water supply
d. Overheating due to
excessive water
temperature
Ineffective grounding
Poor water supply
Remedy
Connect the electricity supply
Check if supply voltage is within ± 10%
Place a screwdriver against the shaft end of
the motor to check it the rotor will spin
freely, and contact your pump supplier.
Same as above
Turn off the power supply and restart or
contact your pump supplier.
Check if pump suction inlet is blocked.
1. Wait till water temp. cool down before
restarting the pump.
2. For rapid restart, fill cold water to the
chamber to quickly cool down the liquid
temp.
Reactivate grounding.
check if water supply is adequate and if the
suction pipe is blocked.

Limited Warranty
Products manufactured by Walrus Pumps Co (Walrus) are warranted to the first user only
to be free of defects in material and workmanship for a period of 12 months from date of
installation, but no more than 24 months from date of shipment. Walrus' liability under this
warranty shall be limited to repairing or replacing at our election, without charge, FOB
Walrus' distribution center or authorized service agent. Walrus will not be liable for any
cost of removal, installation, transportation or any other charges that may arise in
connection with warranty claim.
The warranty period commences on the date of original purchase of the equipment. Proof
of purchase and installation date, failure date, and supporting installation data must be
provided when claiming repairs under warranty.
This warranty is subject to due compliance by the original purchaser with all directions and
conditions set out in the installation and operating instructions. Failure to comply with
these instructions, damage or breakdown caused by fair wear and tear, negligence, misuse,
incorrect installation, inappropriate chemicals or additives in the water, inadequate
protection against freezing, rain or other adverse weather conditions, corrosive or abrasive
water, lightning or high voltage spikes or through unauthorized persons attempting repairs
are not covered under warranty.
Walrus will not be liable for any incidental or consequential damages, losses, or expenses,
arising from installation, use, or any other causes. There are no express or implied
warranties, including merchantability or fitness for a particular purpose, which extend
beyond those warranties described or referred to above.
Certain states do not permit the exclusion or limitation of incidental or consequential
damages or the placing of limitations on the duration of an implied warranty, therefore, the
limitations or exclusions herein may not apply. This warranty sets forth specific legal rights
and obligations, however, additional rights may exist, which may vary from state to state.
Supersedes all previous publications
CP70D0030D000EW0R00
WALRUS PUMP CO., LTD.
Web: www.walruspump.com