Walrus TPGK Series User manual

Immersible Pump
To ensure safe and proper use, please read this instruction before operation.
ISO 9001 Certified
Instruction Manual
Walrus America Inc.
Model : TPGK440
TPGK SeriesTPGK Series

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TPGK Instruction Manual
Before installing your new
system, please study all
instructions carefully, as
the warranty does not cover
failures caused by incorrect
installation and operation.
1. Application
The TPGK Series coolant pump is design
for the circulation and spraying of cooling
lubricants, especially for machine tools.
This series may use on all machine tools
performing Turning, Milling, Drilling,
Cutting, Slitting, Grinding etc. Operation.
It is suitable to carry liquids such as
water, coolant, light oil and other clean,
non aggressive matters.
2. Model Code
3. Operating Limits
1. Ambient temperature: Max. +40 ℃
(104 ℉)
2. Liquid temperature range: 0℃ ~ +90℃
(32 ℉- 194 ℉)
3. Enclosure Class: IP54
4. Operating pressure: Max. 6kg/cm²
(85psi)
5. Submerged depth: Min 60mm (2.36in.)
6. Particle Size: Ø0.1mm
7. Liquids(maximum content of solid
particles in suspension 50g/m³)
8. Kinematical Viscosity: 32 cst (mm²/s)
9.Stop and Restarts:
input power[W] Times/hour
Below 3000 250
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. Pump Location
Note: The pumps can only be mounted in
vertical position, see g.1.
4.2. Submerged Depth: L (mm)
To avoid dry running and damage the
pump during operation, the minimum
liquid level should cover inlet at least
60mm as shown in Fig.2. In addition, the
bottom of the pump suction inlet must be
at least 40mm(1.57in.) above the bottom
of the tank.
60mm
40mm
TPGK 440
Model name
Pressure flow
Fig. 2
Fig. 1

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4.3. Maximum liquid level
The maximum liquid level in
the installation tank must be 20
mm(0.78in.) below the top 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
Residual current device (RCD,
30mA) should be installed and the
grounding be properly connected for
your safety.
5.4. Motors must be connected to a
motor-protective circuit breaker
which can be manually reset. Set
the motor-protective circuit breaker
according to the rated current of the
motor. See nameplate.
5.5. Make electrical connection in
accordance with connecting diagram
located inside the connection box.
The motor current must be within
the rated amps range indicated
on nameplate. Three phase motor
requires a magnetic starter for
safety.
5.6. For three phase motors, look down
from the fan cover the correct
direction of rotation is rotate
clockwise. If wrong rotation, you
can reverse the direction of rotation
by interchanging any two of the
incoming supply wires.
5.7. Motors must equipped overload
protector and open-phase protector
to avoid motor damage.
6. Start-Up
Before starting the pump, make sure the
following:
6.1. For three phase motors, verify if the
rotating direction is correct. It should
be clockwise, look down from the
motor fan cover.
6.2. All piping joints are completely tight.
Leakage in piping may cause the
pump hydraulic loss.
6.3. The pump is lled with liquid.
6.4. The suction filter is not blocked by
any foreign objects.
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. Periodic Checks
The following checks should be
carried out periodically to ensure the
normal operation.
7.2.1. Check the quantity of liquid and
operating pressure.
7.2.2. Check there are no leaks on
piping joints.
7.2.3. Check the tripping of the motor
starter.
20mm
Fig. 3

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7.2.4. Check that all controls are
functioned normally.
7.3. When pump is not in use for a period,
it should be drained. For start up
after long time inactivity please
check if the impeller and mechanical
seal are free. If they are locked up by
sand, rust or something else please
clean them up.
7.4. The pump must not be used to
transfer explosive liquids. In systems
with hot liquids (over 60°C, 140 ℉ ),
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.
7.6. If the supply cord is damaged, it
must be replaced by a special cord
or assembly available from the
manufacturer or its service agent.
CONNECTING
L1
LOW VOLTAGE
U1
W2
L2
V1
U2
L3
W1
V2
HIGH VOLTAGE
L2 L3L1
W2 U2 V2
U1 V1 W1
8. Noise Level
Motor dB(A)
TPGK440 <70
The above drawing shows the noise level
while the pump operated with a closed
outlet.
The tolerance of noise level is ±3dB(A).
9. Wiring Diagram
3Ø

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10. Fault Finding
Make sure to disconnect the power before attempting to diagnose any fault.
Fault Cause Remedy
1.Motor does
not run when
started.
Supply failure. Connect the electricity supply.
Fuses are blown. Replace fuses.
Motor starter overload has tripped
out. Reactivate the motor protection.
Thermal protection has tripped out. Reactivate the thermal protection.
Main contacts in motor starter are not
making contact or the coil is faulty. Replace contacts or magnetic coil.
Control circuit is defective. Repair the control circuit.
Motor is defective. Replace the motor.
2. Motor starter
over load
trips out
immediately
when supply is
switched on.
One fuse/automatic circuit breaker is
blown.
Cut in the fuse.
Contacts in motor starter overload are
faulty.
Replace motor starter contacts.
Cable connection is loose or faulty. Fasten or replace the cable
connection.
Motor winding is defective. Replace the motor.
Pump mechanically blocked. Remove the mechanical blocking of
the pump.
Overload setting is too low. Set the motor starter correctly.
3. Motor starter
overload
trips out
occasionally.
Overload setting is too low. Set the motor starter correctly.
Low voltage at peak times. Check the electricity supply.
4. Motor starter
has not tripped
out but the
pump does not
run.
Supply failure. Connect the electricity supply.
Fuses are blown. Replace fuses.
Thermal protection has tripped out. Reactivate the thermal protection.
Main contacts in motor starter are not
making contact or the coil is faulty. Replace contacts or magnetic coil.
5.Pump runs
but gives no
liquid or pump
capacity is not
constant.
Pump strainer partly blocked by
impurities. Clean the strainer.
Liquid level in tank too low. Increase the liquid level.
Pump draws in air. Check the suction conditions.
6.Leakage in
shaft seal.
Shaft seal is defective. Replace the shaft seal.
7. Noise.
Cavitation occurs in the pump. Check the suction conditions.
Pump does not rotate freely (frictional
resistance) because of incorrect
pump shaft position.
Adjust the pump shaft.

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11. Dimensions
TPGK440

Walrus America Inc.
walrusamerica.com
CC70D0039DA00UW0R00