Walrus TQ200 User manual

Walrus America Inc
TQ Series
TQ Series
Instruction Manual
Electronic Control Pump
TQ Series
TQ Series
ISO 9001 Certified
®
234867
9808 Whithorn Drive, Houston, TX 77095
Web: www.walruspumps.com
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
Walrus America Inc
P099C019U200-01
®
G2

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 : TQ 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:
~ 1 ~
TQ Series Instruction Manual
Please read all instructions carefully before
installing your new systems, as failures caused
by incorrect installation or operation are not
covered by the warranty.
I. Product
The TQ series are designed for the pumping of
non-aggressive water, or water not containing
solid particles.
II. Operating conditions:
1. Ambient temp. : Max. +104ºF (40ºC)
2. Liquid temp. : +39ºF(4ºC) ~ +104ºF(40ºC)Max.
3. System pressure: Max. 120 PSI
4. Relative humidity: Max. 85%(RH)
III. Installation
1.The pump foundation should be rigid enough
to absorb any vibration from the motor, and
the pump should be securely bolted to the
foundation.
2. It is recommended that the plumber/installer
provides an adequate draining system to
avoid damage in case of leakage, particu-
larly when installed indoors. When it is
installed outside, it should be covered by a
weather-proof housing, well ventilated to
allow motor heat to escape.
3. The pump should be installed with horizontal
suction port and vertical discharge port; and
as close as possible to the liquid source.
4. When use with water heaters, a check valve
should be installed between pump
(discharge) pipeline and water heater
(suction) to avoid high-pressure steam
backflow.
5. It is required to shut off the pump when the
liquid source is unavailable; although it has
the dry run cut off function.
6. The pump has a built-in check valve. Please
do not install any other valve on the suction.
7. For TQ1500/2200/3700, Please cut out the
center of the rubber gasket inside the inlet
and outlet flanges as it will block the water
flow.
~ 2 ~
8. When performing regular maintenance, the
prime cover has to open in order to check
the condition of the check valve. DO NOT
apply any bonded material (such as silicon,
glue etc) to seal the chamber cover (see
drawing below).
IV. Piping
1. The suction line should be installed as short
and straight as possible, with a minimum of
bends. The internal diameter of the suction
pipe must be equal to, or greater than the
ports of the pump.
2. The connection between the suction line and
pump must be airtight, and the suction pipe
must be positioned so it has an upward
slope to the pump (thus avoiding the
formation of air pockets).
3. When used on a suction lift, a foot valve
should be fitted on the suction line, below
the liquid level.
4. If hose is used as the suction pipe, it must
be non-collapsible.
5. To minimize pressure drop, the discharge
pipe should be at least the same size as the
discharge port of the pump.
6. For long suction pipes or high suction lifts
over 13 ft, the suction pipe should be of
greater diameter than the suction port.
7. Ensure all connections are completely
sealed using thread tape only.
V. Electrical connection
This mark located outside the
connection box is a warning for an
electrical hazard.
1. Ensure the mains voltage is the same as the
value shown on the motor plate and that the
pump is safely connected to ground/earth.

L2
Input power Grounding
L1
L2
Input power Grounding
L3
L1
Single-phase power supply
3-phase power supply (check if rotation is correct)
Fig. 1
VII. Starting
1. Before starting, the pump must be primed.
Please follow the procedure as shown in
Fig 3.
a. Remove the filling plug
b. Fill water in chamber
Water
c. Replace the filling plug
Fig. 2
2. Installation where the pump inlet is below
the water supply, remove the priming plug
and allow the water to flow into the priming
chamber until all air is expelled.
3. The priming procedure should be repeated
until all air is expelled and the pump delivers
a full stream of water without air bubbles.
4. The pump must always be checked for
prime if not used for a prolonged period. It is
imperative to fill the pump with liquid before
operation as dry running causes irreparable
damage to the mechanical seal.
5. When 3-phase motor is supplied, please
ensure if the rotation is correct. You can
switch any of the 2 wires to get your desired
rotation.
VIII. Precautions
1. The pump should be shut down and the
trouble corrected if the pump is running at
speed and found to have any of the following
problems:
- No liquid discharged - Not enough liquid
discharged
- Excessive vibration - Motor runs hot
2. Do not allow the pump to continually start
and stop (cycling) as this will reduce the
motor life.
~ 3 ~
2. The single phase models are supplied with
plug and lead and can be connected directly
to the mains supply. The 3 phase models
should hook up with a circuit breaker.
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".
Before operation, please ensure the voltage is
correct and the circuit breaker and grounding
connectors are all connected in accordance
with local regulations.
IX. Operation and maintenance
Under normal operating conditions, the pump
does not require any maintenance as long as
the following points are observed:
1. Periodically check the condition of the check
value and strainer (if used).
2. If the pump is to be inactive for long periods,
it should be rinsed thoroughly with clean
water, then, drained and stored in a dry
place.
3. If the pump sticks after periods of inactivity,
a screw driver slot is provided on the motor
shaft end to free up the pump/motor. To do
so, insert a screw driver in the slot in the
motor shaft as shown in Fig 3 and turn to
free the rotor. If this does not remedy the
problem, the unit will need dismantling.
Fig. 3
4. Pressure tank air charge should be checked
at regular intervals of every 3 months and
after the pump has not been used for a
prolonged period.To check the Pressure
Tank air pressure, turn off power, open a tap
on the discharge line to release pressure
from the pump, unscrew the black plastic
cover and apply an accurate pressure gauge
to the valve as shown in Fig 4.
Pressure should be adjusted to the original
pre-charge as follows:
TQ200: 17 psi (1.2 Kg/cm²)
TQ400: 26 psi (1.8 Kg/cm²)
TQ800: 36 psi (2.5 Kg/cm²)
TQ1500 up to TQ3700: 36 psi (2.5 Kg/cm²)
Fig. 4
X. Adjustments and Reset procedures
The TQ has a preset activation pressure as per
the table below. For most applications this will
be satisfactory.
1. When the inlet pressure is below the preset
pressure range, please DO NOT adjust the
original setting.
2. The activation pressure can be adjusted
higher when the inlet pressure exceeds the
preset pressure range. Remember that inlet
pressure adds to the TQ pressure, so take
the 40 psi inlet pressure supplied to the
TQ800 for example, internal pressure can
reach approximately 107 psi (67 + 40 psi). If
too high internal pressure is the concern, it
is recommended to install a regulator to
reduce the inlet pressure. The TQ
maximum pressure as per the table below.
The factory preset activation point is as follows:
Model
TQ200
TQ400
TQ800
TQ1500
TQ2200
TQ3700
Power
( HP )
¼
½
1
2
3
5
Preset activation
point ( psi )
20
28
36
43
43
43
Model
TQ200
TQ400
TQ800
TQ1500
TQ2200
TQ3700
Maximum Pressure point ( psi )
31
40
67
58
60
72
~ 4 ~
3. Cycling can occur on pressure units when
the pressure tank pre-charge drops, or
where there is a leak in the discharge
plumbing.

~ 5 ~
3. The activation pressure must be at least 10 psi below maximum pump pressure.
4. The maximum discharge pressure is NOT adjustable.
5. The flood suction performance table is as below:
Flooded Suction Performance Table
TQ200
Flow rateInlet pressure
(psi) 3 gpm 6 gpm 9 gpm 12 gpm 15 gpm
532 27 22 17 10
10 37 32 27 22 15
15 42 37 32 27 20
** 20 47 42 37 32 25
** 25 52 47 42 37 30
** Need to adjust pressure switch setting when inlet pressure is higher than the preset activation point
(TQ200 preset at 17 psi)
TQ400
Flow rateInlet pressure
(psi) 3 gpm 6 gpm 9 gpm 12 gpm 15 gpm 18 gpm
10 48 42 37 30 23 15
20 58 52 47 40 33 25
** 30 68 62 57 50 43 35
** 40 78 72 67 60 53 45
(TQ400 preset at 26 psi)
TQ800
Flow rateInlet pressure
(psi) 3 gpm 6 gpm 9 gpm 12 gpm 15 gpm 18 gpm 21 gpm
10 73 69 63 57 49 39 27
20 83 79 73 67 59 49 37
30 93 89 83 77 69 59 47
** 40 103 99 93 87 79 69 57
** Need to adjust pressure switch setting when inlet pressure is higher than the preset activation point
** Need to adjust pressure switch setting when inlet pressure is higher than the preset activation point
(TQ800 preset at 36 psi)
TQ1500
Flow rateInlet pressure
(psi) 10 gpm 20 gpm 30 gpm 40 gpm 50 gpm 60 gpm
10 63 59 55 48 39 27
20 73 69 65 58 49 37
30 83 79 75 68 59 47
40 93 89 85 78 69 57
TQ2200
Flow rateInlet pressure
(psi) 10 gpm 20 gpm 30 gpm 40 gpm 50 gpm 60 gpm
10 66 62 58 53 46 36
20 76 72 68 63 56 46
30 86 82 78 73 66 56
40 96 92 88 83 76 66
TQ3700
Flow rateInlet pressure
(psi) 10 gpm 20 gpm 30 gpm 40 gpm 50 gpm 60 gpm
10 80 75 70 65 59 49
20 90 85 80 75 69 59
30 100 95 90 85 79 69
40 110 105 100 95 89 79
~ 6 ~
+
-
Instructions for pressure adjustment (Fig. 5):
1. If pump does not start when tap is on, adjust
clockwise ("+") till it starts.
2. If pump does not stop when no water is
consumed, adjust counterclockwise ("-" ) till
it stops.
3. After adjustment is made, turn it on and off
several times to make sure it operates
normally.
TQ 200/400/800
Open the cover to adjust the pressure
XI. Adjust pressure switch
Adjust the pressure switch setting (according
to the pump models) as shown in Fig 5. Make
sure the system is primed.
The pump is supplied with a preset pressure in
the pressure switch. For most applications, it
will be satisfactory. In some cases a different
pressure may be required. This can be
achieved by following the instructions below.
However, it is highly recommended that the
adjustment is only done by the professional
personnel.

~ 7 ~
Fig. 5
+
-
XII. Adjust flow switch
Following the adjustment of the pressure switch,
and with the unit running, close all tapes on the
discharge. If the pump cuts out, no adjustment
is necessary. If the pump does not cut off,
please refer to Fig 6:
1. For TQ200/400/800: Loose the hex. screw and
use a screw driver to adjust the flow switch
clockwise (+) until the pump stops.
2. For TQ1500/2200/3700: Open the control box
and move the flow level control to a higher
position (to allow more flow) until the pump stops.
Open and close a tap on the discharge several
times to ensure that the pump starts and stops
normally. No further adjustments are necessary.
TQ 200/400/800
TQ 1500/2200/3700
Fig. 6
TQ 1500/2200/3700
Open the cover to adjust the pressure
~ 8 ~
XIII. Frequently asked questions:
1. What causes the TQ to start?
The TQ has the built-in pressure switch and
internal flow switch. Each of these can turn the
pump on depending on water consumption.
The pump will start when:
- The pressure is BELOW the pressure switch
activation point. OR
- The flow rate is greater than 0.7 GPM.
The preset activation point for each model is
provided in the pump specifications. The cut in
pressure must be lower than the preset
activation pump; otherwise the pump will not
start.
2. What is the maximum pressure switch
activation point?
Adjust the pressure only when the cut in
pressure is higher than the preset activation
point. Do not adjust the pressure to exceed the
maximum pressure range as below because
too high pressure may cause the pump not
stop:
3. What causes the TQ to stop?
The flow switch is designed to automatically
stop the TQ pump when flow drops to below 0.7
GPM. The pump will shut off in a few seconds
after flow stops (TQ200-800 is programmed to
stop after 8 seconds and TQ1500-3700 is
programmed to stop after 15 seconds). In
addition, the TQ will be turned off in the event of
dry-run or over temperature alarm.
4. What is the purpose of the built-in
pressure tank?
The pressure tank comes from the factory
pressurized at approximately 17-36 psi (with
the pump pressure at zero). It is designed to
minimize motor startup due to small flow
demand or minor leak of the pipeline.
TQ200 - 17 psi (1.2 Kg/cm²)
TQ400 - 26 psi (1.8 Kg/cm²)
TQ800 - 36 psi (2.5 Kg/cm²)
TQ1500 up to 3700 - 36 psi(2.5 Kg/cm²)
5. How is the dry-run condition determined
and the protection provided?
The dry-run is defined when the motor is
running AND the flow rate is less than 0.3 GPM
AND when pressure is less than the pressure
switch setting. The protection is provided:
When the pump is run dry 2 minutes, it will
automatically shut off for 10 minutes and then
attempts to restart. When all 3 attempts are
failed, the pump will rest for 1 hour and then
attempts to restart. This protection mode will
be repeated until the water supply is back to
normal.
In case the pump is cycling (on-and-off
repeatedly) due to small flow (less than
0.3GPM), air pocket in the system, air loss in
the pressure tank or leak in the pipeline, the
protection is provided:
The pump will run for 8 seconds and stop for
about 3 seconds. When the cycling mode
repeat for 15 times consecutively, the pump will
be rest for 1 hour. Then it will start over the
protection mode until the problem is corrected.
Note: Above unusual pump shutdown, users
may remove power plug over than 6 seconds and
reconnect again to restart, if it is necessary.
Warning
The pump is not designed for continuous
operation under low discharge flows such
as slow closing float valves, slow running
taps. Under this application, please install
an extra tank of adequate volume to avoid
“cycling”. (Fig7)
Please set the extra pressure tank prussure
the same as activation pressure. Leaking
discharge line and leaking taps will damage
the unit through causing the pump to
repeatedly start and stop.
Extra Pressure Tank
pipe tee
TQ200 - 31 psi
TQ400 - 40 psi
TQ800 - 67 psi
TQ1500 - 58 psi
TQ2200 - 60 psi
TQ3700 - 72 psi
Fig7

~ 9 ~
XV. Specification:
Model
TQ200
TQ400
TQ800
TQ1500
TQ2200
TQ3700
Power
( HP )
¼
½
1
2
3
5
Cycle
( Hz )
60
60
60
60
60
60
Voltage
( V )
115 or 230
115 or 230
115 or 230
230
230
230
Phase
( Ø )
1
1
1
1 or 3
3
3
Outlet
(NPT)
1"
1"
1"
1½"
2"
2"
H max.
( ft )
72
92
154
134
138
167
Q max.
( GPM )
16.9
18.5
23.8
66.0
71.3
71.3
Amp's
( A )
4.0 or 2.0
6.0 or 3.0
11.0 or 5.5
9.5 or 6.5
9.5
12
Inlet
(NPT)
1"
1"
1"
1½"
2"
2"
XIV. Dimensions: (in.)
TQ200/400/800
TQ1500/2200/3700
4-Ø0.4
NPT 1"
NPT 1"
Model
TQ 200
TQ 400
TQ 800
TQ1500~3700
A (in.)
14.37
14.92
17.76
19.72
B (in.)
6.26
6.77
7.80
7.76
C (in.)
6.46
6.97
7.99
8.35
C
A
8.27 B
2.56
6.69
8.66
9.06
5.83
5.51
14.76
10.63
3.9
5.71
8.82
5.12
3.3
1.77
6.3
C
A
B6.89
Outlet
Outlet
TQ1500 : NPT 1½"
TQ2200 : NPT 2"
TQ3700 :
Inlet
Inlet
TQ1500 : NPT 1½"
TQ2200 : NPT 2"
TQ3700 :
~ 10 ~
XVI. Troubleshooting
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. Pump starts
when no water is
consumed
4. Pump starts and
stops too
frequently
5. Electric shock
6. Pump does not
stop when water
is not consumed
7. Pump runs
normal but with
very low
discharge flow
Cause
a. No power supply
b. Too low/high voltage
c. Inadequate pressure at
suction or discharge
d. Seized-up pump
a. Seized-up pump
b. Overloaded motor
c. Poor water supply
d. The protection for pump dry
run or cycling is activated.
a. Existing pipe is leaking
b. Air tank pressure is too low
c. Pipe suck in air.
a. Leakage in suction pipe
or air in the water.
b.Discharge flow is too low.
a.Ineffective grounding
a. Poor water supply or air
suck in.
b. Pressure set is too high
c. Flow set is too small.
d. Defective check valve.
a. 3-phase motor runs in
wrong rotation.
b. Poor water supply
Remedy
Connect the electricity supply
Check if soupply voltage is within ± 10%
Follow X and XI of the Operation Manual
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.
Check the detailed information per XIII
(Frequently asked questions). Item 5
Fix the leakage.
Charge air per IX-4 of the manual.
Check the suction pipe and water supply.
Check the suction pipe and water supply.
Set your tap on a higher water flow.
Reactivate grounding.
1. Turn off the power supply and open the
refilling plug to release the air. Then restart.
2. In case of long suction pipes, turn off the
power and make sure if water supply is
adequate.
Adjust pressure per XI
Adjust flow switch per XII
Clean or replace with a new valve.
Switch any of the 2 wires from motor terminal
to correct rotation.
check if water supply is adequate and if the
suction pipe is blocked.