Walrus TPRK Series User manual

Instruction Manual
Immersible Pump
Immersible Pump
Immersible Pump
TPRK Series
TPRK Series
TPRK Series
ISO 9001 Certified
Walrus Pump Co., Ltd.
®
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
C099C009E002-00
Walrus Pump Co., Ltd.
Web: www.walruspump.com E-mail: [email protected]
®

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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 : TPRK Series
Conform to the following directive:
98/37/EC-----Machinery directive
2006/95/EC—Low voltage directive
2004/108/EC----EMC (Electromagnetic compatibility) directive
Refer to the following standards:
EN ISO 12100-1:2003 EN ISO 12100-2:2003
EN1050:1996
EN60335-1:2001 EN 809:1998
EN60335-2-41:2001
EN61000-6-2 EN61000-6-3
R&D department manager: Kao Tien-chuan
Manager:
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Please read this instruction manual
carefully before installing your new
system as failures caused by
incorrect installation and operation
are not cover by the warranty.
1. Application
1.1. The TPRK series is multi-stage centrifugal
pump designed for industrial use,
especially for machine tools.
1.2 The pump can not be used to transfer
explosive liquids; such as gasoline, diesel
oil or similar liquids. It is suitable to carry
liquids such as water, coolant, low viscosity
or other non-corrosive liquids.
2. Product Code Designation
The standard range of pumps includes
complete impeller in chamber combinations.
Upon request, a special length can be supplied
by fitting empty intermediate chambers instead
of standard chambers with impellers. The pump
nameplate indicates the number of chambers
and impellers fitted to the pump.
3. Operating Limits
1. Ambient temperature :Max. 50oC(122oF)
2. Liquid temperature range : 0oC(32oF) to
90oC(194oF)
3. Operating pressure :Max. 25 kg/cm²
4. Submerged depth :Min. 65mm
4. Installation
The pump has hot surface on the
motor. It must be installed so that
persons cannot accidentally come
into contact the hot surface.
4.1. Submerged Depth
To avoid dry running and damage the pump
during operation, the minimum pump
submerged depth is 65mm (2½”) as shown in
Fig 1. In addition, the bottom of the pump
suction inlet must be at least 25 mm (1”) above
the bottom of the tank.
5. Electrical Connection
5.1 The electrical connection should
be carried out in accordance
with local regulations. Never
make any connections unless
the electricity supply has been
switched off.
5.2. The electrical hazard warning
mark is placed outside the
connection box. Be careful.
5.3. Electrical data (voltage and frequency) are
shown on the pump nameplate. Verify if
these data match your electricity supply. A
circuit breaker should be installed and the
grounding be properly connected for your
safety.
5.4. Make electrical connection in accordance
with connecting diagram located inside the
Min. 65 mm (2½”)
25 mm (1”)
Fig.1
TPRK 2T 13 - 12 S
Stainless steel series
Number of Impellers
Number of stages
Standard capacity m3/h
Model code

connection box. The motor current must be
within the rated amps range indicated on
nameplate. Three phase motor requires a
magnetic starter for safety.
5.5. Three phase motor must check rotating
direction. The rotating direction indicated
on the fan cover, is clockwise viewing from
fan cover end. Interchanging any two leads
with power off can reverse the pump
rotation.
6. Start-up
Before starting the pump, make sure the follow-
ing:
6.1. For three phase motors, verify if the rotating
direction is correct. It should be clockwise
viewing from the motor fan cover end.
6.2. All piping joints are completely tight.
Leakage in piping may cause the pump
hydraulic loss.
6.3. The pump is filled with liquid.
6.4. The suction filter is not blocked by any
foreign objects.
6.5 For start up of the first operation or after
long time inactivity, please place a screw-
driver against the shaft at motor end and
following the sticker instruction turn
clockwise or anticlockwise to see if rotor
spins freely. (Fig. 2). If it is, you are free to
run the pump.
7. Operation and Maintenance
It is dangerous to operate the pump
against a closed discharge outlet
because it will cause extremely
high liquid flow temperature and
damage the pump in a few minutes.
7.1. Lubrication
The mechanical seal and shaft sleeves are
lubricated by the pumped liquid.
7.2. Suction filter
Always keep suction filter clean and make
sure it is not blocked by impurities.
7.3. Periodic checks
The following checks should be carried out
periodically to ensure the normal opera-
tion.
7.3.1. The liquid level and operating
pressure.
7.3.2. There are no leaks on piping and
joints.
7.3.3. Check the tripping of the motor
starter.
7.3.4. Check that all controls are functional.
7.4. The pump must not be used to transfer
explosive liquids. In systems with hot
liquids (over 60oC), extra caution should be
exercised to prevent from personal injury.
7.5. The pump should not be used to transfer
toxic or contaminated liquids. Please
carefully follow all instructions in the
manual as Walrus may refuse to accept the
contaminated pump for servicing.
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Fig.2
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8. Sound pressure level
LAdB(A)
Motor
[kW]
2.2
3.0
4.0
50Hz
< 70
< 70
< 70
60Hz
< 70
< 70
< 70
Fig.3
9. Please lift or move the pump by
hoist as shown in Fig 3 below.

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10. Trouble Shooting
Make sure electricity supply has been switched off before trouble shooting
Fault Cause Remedy
1. Motor does not
run when started.
2.Fuses Blow or
motor starter
overload trip.
3. Pump runs but
does not deliver
water or the
discharge flow is
inconsistent.
4. Noise.
Supply failure.
Fuses are blown.
Motor starter overload has tripped out.
Thermal protection has tripped out.
Main contacts in motor starter are not
making contact or the coil is faulty.
Control circuit is defective.
Motor is defective.
One fuse/automatic circuit breaker is blown.
Contacts in motor starter overload are faulty.
Cable connection is loose or faulty.
Motor winding is defective.
Pump mechanically blocked.
Overload setting is too low.
Low voltage at peak times
Pump strainer partly blocked by impurities.
Liquid level in tank too low.
Pump draws in air.
Pump sucks in air.
Pump does not rotate freely (frictional
resistance) because of incorrect pump
shaft position.
Connect the electricity supply.
Replace fuses.
Reactivate the motor protection.
Reactivate the thermal protection.
Replace contacts or magnetic
coil.
Repair the control circuit.
Replace the motor.
Cut in the fuse.
Replace motor starter contacts.
Fasten or replace the cable connection.
Replace the motor.
Remove the mechanical blocking
of the pump.
Set the motor starter correctly.
Check the electricity supply.
Clean the strainer.
Increase the liquid level.
Check the suction conditions.
Check the suction conditions.
Adjust the pump shaft.
1
-
2
m
m
1
2 3
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Coupling adjustment
Connecting parts drawing