AXEON Grundfos MQ User Manual [en, es, fr]
MQ
US
C
Installation and operating instructions
GRUNDFOS INSTRUCTIONS
LIMITED WARRANTY
Products manufactured by GRUNDFOS PUMPS CORPORATION (Grundfos) are
warranted to the original user only to be free of defects in material and workmanship
for a period of 24 months from date of installation, but not more than 30 months from
date of manufacture. Grundfos' liability under this warranty shall be limited to repairing or replacing at Grundfos' option, without charge, F.O.B. Grundfos' factory or
authorized service station, any product of Grundfos' manufacture. Grundfos will not
be liable for any costs of removal, installation, transportation, or any other charges
which may arise in connection with a warranty claim. Products which are sold but
not manufactured by Grundfos are subject to the warranty provided by the manufacturer of said products and not by Grundfos' warranty. Grundfos will not be liable
for damage or wear to products caused by abnormal operating conditions, accident,
abuse, misuse, unauthorized alteration or repair, or if the product was not installed
in accordance with Grundfos' printed installation and operating instructions.
To obtain service under this warranty, the defective product must be returned to the
distributor or dealer of Grundfos' products from which it was purchased togeth er
with proof of purchase and installation date, failure date, and supporting installation
data. Unless otherwise provided, the distributor or dealer will contact Grundfos or
an authorized service station for instructions. Any defective product to be returned
to Grundfos or a service station must be sent freight prepaid; documentation supporting the warranty claim and/or a Return Material Authorization must be included
if so instructed.
GRUNDFOS 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.
Some jurisdictions do not allow the exclusion or limitation of incidental or consequential damages and some jurisdictions do not allow limit actio ns on how long
implied warranties may last. Therefore, the above limitations or exclusions may not
apply to you. This warranty gives you specific legal rights and you may also have
other rights which vary from jurisdiction to jurisdiction.
2
MQ
English (US)
Installation and operating instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Español (MX)
Instrucciones de instalación y funcionamiento. . . . . . . . . . . . . . . . . . . . . . . . . .23
Français (CA)
Notice d'installation et de fonctionnement . . . . . . . . . . . . . . . . . . . . . . . . . . . . .43
Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .62
Contents
3
English (US)
English (US) Installation and operating instructions
CONTENTS
1. Introduction
2. Items supplied
3. Symbols used in this document
4. Applications
4.1 Pumped liquids
5. Identification
5.1 Type key
6. Operating conditions
6.1 Suction lift
7. Mechanical installation
7.1 Location
7.2 Foundation
7.3 Space requirement
7.4 Pipework
7.5 Protective cover
8. Electrical connection
8.1 Generator or inverter
8.2 Wiring diagram
8.3 Winding resistance measurement
8.4 Winding resistance measurement
8.5 Start-up
9. Functions
9.1 Control panel
9.2 Pump stop
10. Maintenance
10.1 Service kits
10.2 Start-up after a long period of inactivity
11. Service
12. Technical data
12.1 Dimensions
12.2 Electrical data
12.3 Approvals
13. Accessories
14. Fault finding chart
15. MQ frequently asked questions
16. Disposal
Page
10
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12
12
13
14
15
15
16
17
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18
18
18
18
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19
21
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WARNING
4
4
5
5
5
6
1. Introduction
6
7
The MQ is a low-noise water supply system
7
consisting of pump, motor, pressure tank and
controller combined into one compact unit.
8
The system is suitable for both indoor and out-
8
door use.
8
8
The self-priming pump starts automatically
8
when water is consumed in the installation and
stops when consumption ceases. The internal,
built-in non-return valve prevents backflow
during priming and operation.
The MQ pump incorporates overtemperature
and dry-running protection as well as a userfriendly control panel.
The built-in pressure tank reduces the number
of starts and stops in case of leakage in the
installation.
Prior to installation, read these
installation and operating instructions. Installation and operation
must comply with local regulations and accepted codes of good
practice.
2. Items supplied
The MQ packaging contains these items:
• MQ water supply system with built-in nonreturn valve
• non-return inlet valve in plastic bag
• installation and operating instructions.
4
3. Symbols used in this document
Caution
Note
WARNING
If these safety instructions are not
observed, it may result in personal
injury!
If these safety instructions are not
observed, it may re sul t in ma lfun ction or damage to the equipment!
Notes or instructions that make
the job easier and ensure safe
operation.
4. Applications
The MQ water supply system is designed for
these typical applications:
• water pressure boosting
(maximum inlet pressure: 40 psi)
• water supply from wells (maximum suction
lift: 25 ft), for example
– in private homes
– on farms
– in market gardens and other large gar-
dens.
The pump is suitable for rain water.
English (US)
4.1 Pumped liquids
Thin, clean, non-aggressive liquids, not containing solid particles or fibres.
5
English (US)
Base plate
Drain plug
Suction
port
Priming plug
Discharge port
Control panel
Pressure
tank cover
End-cover
plug
Protective cover
(accessory)
5. Identification
5.1 Type key
Example MQ 3 -35 A -O -A BVBP
Pump type
Nominal flow rate [m³/h]
Head [m]
Code for pump version
A: Standard
Code for pipework connection
Code for materials
A: Standard
Code for shaft seal
Fig. 1 MQ water supply system. Protective cover is required for outdoor use.
6
TM04 3648 4908
6. Operating conditions
MQ 3-35 MQ 3-45
Maximum flow rate [gpm] 22
Maximum pressure [psi] 51 65
Maximum system pressure [psi] 108
Maximum suction lift [ft]; see page 62 25
Minimum ambient temperature [°F]/[°C] 32/0
Maximum ambient temperature [°F]/[°C] 113/45
Minimum liquid temperature [°F]/[°C] 32/0
Maximum liquid temperature [°F]/[°C] 95/35
Net weight [lbs] 29
Sound pressure level [dB(A)] < 70
Tank volume [oz] 13.5
Air pressure in tank [psi] 22 to 25
Connections 1" NPT
Priming and drain plugs 3/8" GAS
6.1 Suction lift
The maximum suction lift of the pump can be
determined from the diagram, page 62.
Example:
If the suction lift is 10 ft, the length of the suction pipe must not exceed 72 ft.
English (US)
7
English (US)
Note
Note
Max. ± 18 °
Note
Note
60"
7. Mechanical installation
7.1 Location
The pump is suitable for indoor and outdoor
installation. It is resistant to sunlight.
For outdoor installation, the pump
must be fitted with a protective
cover (accessory). See section
7.5 Protective cover and
13. Accessories.
Should the unlikely event of an
internal leakage occur, pumped
liquid will be drained out from the
base and/or end cover instead of
damaging the pump. Install the
pump in such a way that no undesirable collateral damage can
arise.
7.2 Foundation
Mount the pump on the base plate with horizontal suction port and vertical discharge port.
The pump must be installed horizontally.
The maximum permissible inclination angle is
± 18 °. See fig. 2.
7.3 Space requirement
For inspection and service, allow a minimum
clearance of 60" behind the pump.
TM04 3746 5008
Fig. 3 Minimum clearance behind the
pump
Being self-cooling, the pump requires no
space or ventilation at the sides.
Ensure that the maximum ambient
temperatures do not exceed the
values stated in section
6. Operating conditions.
7.4 Pipework
Never use unnecessary force
when connecting the pipes.
The pump is supplied with 1" NPT screwed
connections. Fit the connections in the suction
and discharge ports. See fig. 4. The pump discharge port is flexible, ± 5 °, to facilitate the fitting.
Fig. 2 Horizontal installation of the MQ
To prevent movement and vibrations, the
pump and base plate can be secured to a solid
foundation by means of the bolt holes in the
base plate. For pipework connection, see section 7.4 Pipework.
8
TM01 9691 2600
TM01 9698 2600
Fig. 4 Fitting of screwed connections in
suction and discharge ports
Carefully screw the discharge connection into
Foot valve
Note
the discharge port, using a spanner or similar
tool. Hold the discharge connection, and
tighten the pump discharge union nut with your
hand. See fig. 5.
Fig. 5 Correct: Tighten the discharge
union nut with your hand
Fig. 6 Wrong: Do not use a tool to tighten
the discharge union nut
7.4.1 Suction pipes connected to a well
If the pump draws water from a well, we recommend to fit a foot valve to the end of the
suction pipe. See fig. 7.
7.4.3 Long suction pipes
A separate non-return inlet valve is supplied
with the pump. In case of long suction pipes,
we recommend to fit the non-return inlet valve
in the pump suction port. See section
7.4.4 Fitting of the non-return inlet valve
The pipes must be adequately supported on
either side of the pump to avoid straining the
pump connections.
7.4.4 Fitting of the non-return inlet valve
The non-return inlet valve reduces the risk of
losing pump priming in negative suction appli-
TM04 4271 1009TM 044272 1009TM01 9693 2600
cations and improves the auto-aspiration
capability, for example in water supply from a
cistern.
Install the non-return inlet valve as follows,
see fig. 8:
1. Remove the suction connection of the
pump.
2. Fit the non-return inlet valve into the suction port in the direction shown in fig. 8.
3. Refit the pump connection.
Applications with positive inlet
pressure do not require installation of the non-return inlet valve,
due to the fact that the MQ pump
incorporates an internal nonreturn valve at the disc harg e side .
English (US)
Fig. 7 Suction pipes connected to a well
7.4.2 Suction hose instead of pipe
If a suction hose is used instead of a pipe, the
hose should not exceed the lengths stated in
the graph, page 62. The suction hose must be
minimum Ø1". The hose must be of the noncollapsible type.
TM 04 4121 0809
Fig. 8 Fitting of non-return inlet valve
9
English (US)
Note
7.5 Protective cover
Failure to use the protective cover
in outdoor installations will invalidate the warranty.
The protective cover protects the control p anel
against the weather. It is available as an
accessory. See section 13. Accessories.
To fit the protective cover, click the cover onto
the top of the control panel so that it engages
with the top cooling ribs.
To remove the cover, pull the two clips outwards, free of the cooling ribs, and pull the
cover upwards.
Fig. 9 Protective cover
TM04 3745 5008
10
8. Electrical connection
Note
The electrical connections and additional protection should be carried out by qualified persons in accordance with local regulations.
The pump must be connected to the mains via
a sheathed cable with a protective ground
lead. It is possible to replace the mains supply
cable. See fig. 10.
WARNING
Non-submersible pump.
If the power cord is damaged, it
must be replaced by the manufacturer, an authorized service center
or by a qualified person in order to
avoid risks.
Never make any connections in
the pump terminal box unless the
electricity supply has been
switched off for at least 5 minutes.
Risk of electric shock:
This pump is supplied with a
grounding conductor and grounding type attachment plug.
To reduce the risk of electric
shock, install only on circuit protected by a Ground-Fault-CircuitInterrupter (GFCI).
This pump is not intended, nor has
it been investigated for use in
swimming pool or marine areas.
This pump has been evaluated for
use with water only.
Do not start the pump until it has
been filled with water (primed, see
fig. 12).
Acceptable for indoor and outdoor
use.
Enclosure type 3.
The operating voltage and frequency are
marked on the nameplate. Make sure that the
motor is suitable for the electricity supply on
which it will be used.
English (US)
TM01 9694 2600TM01 9695 2600
Fig. 10 Electrical connection
Connect the mains supply cable of the pump
to the electricity supply. When the cable is
connected, a red and a green indicator light on
the control panel will be on. See fig. 11.
Fig. 11 Connection of mains supply cable
8.1 Generator or inverter
The MQ can be powered by a generator or an inverter. However, the
pump will only operate satisfactorily if the generator or inverter
generates a true sinusoidal wave
with the necessary power and voltage input. The generator must be
sized 10 % above the P1
(input power) of the pump. For P1,
see section 12.1 Dimensions.
11
English (US)
Black (phase)
Red
Black
Orange
> Flow sensor
> Pressure switch
Capacitor
Yellow
Yellow
Electric motor
Yellow/green (ground)
Red (main)
Black
White (neutral)
> Cable
B
A
Yellow
White
C
8.2 Wiring diagram
8.2.1 115 V
Fig. 12 Wiring diagram - 115 V
8.3 Winding resistance measurement
Motor
[V/Hz]
115/60
The measurement can be done with or without cables connected to the PCB and the capacitor.
12
Measuring point Winding
A-B (black - red) Main 1.4
A-C (black - white) Aux 5.5
Resistance
[± 10 %]
Ambient temperature
[°F] [°C]
70 21
TM02 2424 4708
8.3.1 230 V
Black (phase)
Red
Black
Orange
> Flow sensor
> Pressure switch
Capacitor
Yellow
Yellow
Electric motor
Yellow/green (ground)
Blue
White (neutral)
> Cable
B
A
Yellow
White
English (US)
Fig. 13 Wiring diagram - 230 V
8.4 Winding resistance measurement
Motor
[V/Hz]
230/60
Measuring point Winding
A-B (blue - red) Main 5.4
A-C (blue - white) Aux 5.4
The measurement can be done with or without cables connected to the PCB and the capacitor.
Resistance
[± 10 %]
Ambient temperature
[°F] [°C]
70 21
TM02 2424 2409
13
English (US)
8.5 Start-up
Before start-up, the pump must be filled with
1.2 to 1.5 gallons of water to enable it to selfprime, see fig. 14. The pump is self-priming
with a maximum suction lift of 25 ft.
Fig. 14 Priming the pump
When started, the pump begins to self-prime.
When it has been primed, the pump will automatically change over to normal operation.
If the priming has not been completed within
5 minutes, the pump will stop automatically
and attempt to restart after 30 minutes. It is
possible to reset the pump manually, see point
2 in the table of section 9.1 Control panel.
TM01 9696 2600
14
9. Functions
9.1 Control panel
The MQ pump is operated entirely by means
of the control panel. See fig. 1. The control
panel offers the possibility of starting/stopping
the pump. The pump settings and operating
condition are indicated by indicator lights.
See fig. 15.
TM01 9684 2600
Fig. 15 Control panel
The functions of the control panel are described in the table below:
Illustration Description
1 Indicator light (red)
When the indicator light is on, the pump is on standby.
English (US)
2 On/Off button
The pump is started/stopped by means of the on/off
button.
The on/off button can also be used for manual resetting in case of an alarm condition:
• press once for resetting and
• press once more for starting.
3 Indicator light (green)
Indicates that the pump is ready for operation.
When the indicator light is on, the pump will start auto-
matically when water is consumed. The pump will stop
a few seconds after the water consumption has
ceased.
15
English (US)
Note
4 Pump on (green)
The indicator light is on when the pump is running.
5 Auto reset (green)
As standard, this function is activated on delivery.
• When the indicator light is on, the auto-reset function is activated. The pump will automatically
attempt to restart every 30 minutes after an alarm/
fault over a period of 24 hours. After this period,
the pump will remain in the alarm condition.
• When the indicator light is off, the auto-reset function is deactivated. The pump will not restart after
an alarm/fault.
The auto-reset function can be activated/deactivated
by pressing the on/off button for 5 seconds.
Note: When water is consumed, the pump will start
and stop automatically, whether the auto-reset light is
on or off.
6 Alarm (red)
The indicator light is on when the pump is in alarm
condition.
The alarm condition may have been caused by:
• dry running
• overtemperature
• overloaded motor
• seized-up motor/pump.
See section 9.2 Pump stop.
9.2 Pump stop
The pump incorporates an electronic protective function that will stop the pump in case of
• dry running
• overtemperature
• overloaded motor
• seized-up motor/pump.
The pump will restart automatically after
30 minutes (for 24 hours) in case of any type
of fault if the auto-reset function is activated
(the green indicator light on the control panel
is on, see point 5 in the table of section
9.1 Control panel).
The pump settings are stored.
After supply failure, the pump will
automatically revert to its previous
operating condition when the electricity supply is reconnected.
16
10. Maintenance
Note
Under normal operating conditions, the pump
is maintenance-free. However, it is recommended to keep the pump clean.
WARNING
Do not remove the pressure tank
from the pump unless it has been
vented through the air escape
valve.
Never touch the electronics unless
the pump has been switched off
for at least 5 minutes.
If there is any risk of frost damage, drain the
pump through the drain hole and slacken the
union nut on the discharge pipe, see fig. 16.
The pump must be filled with liquid before it is
started up again. See fig. 14.
Fig. 16 Draining the pump
10.1 Service kits
Service kits are available for the MQ pump.
The service kits consist of the following
replaceable parts:
• shaft seal
• motor
• electronic units
• hydraulic components.
10.2 Start-up after a long period of
inactivity
The end cover incorporates a plug which can
be removed by means of a suitable tool.
See fig. 17. It is then possible to free the pu mp
rotor if it has seized up as a result of inactivity.
If it has been drained, the pump must be filled
with liquid before start-up. See fig. 14.
Fig. 17 Removing the end-cover plug
11. Se rvi ce
If a pump has been used for a liquid that is injurious to health or
TM01 9697 4403
If Grundfos is requested to service the pump,
Grundfos must be contacted with details about
the pumped liquid, etc. before the pump is
returned for service. Otherwise Grundfos can
refuse to accept the pump for service.
Possible costs of returning the pump are paid
by the customer.
However, any application for service (no matter to whom it may be made) must include
details about the pumped liquid if the pump
has been used for liquids which are injurious
to health or toxic.
toxic, the pump will be classified
as contaminated.
English (US)
TM04 3633 4608
17
English (US)
12. Technical data
12.1 Dimensions
12.2 Electrical data
MQ 3-35 MQ 3-45
Enclosure type 3
Enclosure class IP 54
Insulation class B
Supply cable
Voltage,
power consumption,
[W]
P
1
1 x 115-120 V – 10/+ 6 %,
60 Hz
1 x 220-240 V – 10/+ 6 %,
60 Hz
6.56 ft SJTW 18 awg
900 W/8.0 A 1100 W/10.0 A
850/4.0 A 1050/4.8 A
TM01 9799 508
with/without plug
12.3 Approvals
UL-listed and CSA-approved.
13. Accessories
Model Designation Product number
MQ 3-35 / MQ 3-45 Protective cover 96590745
18
14. Fault finding chart
Fault Cause Remedy
1. The pump does
not start.
2. The pump does
not stop.
3. The pump cuts
out during
operation.
4. The pump
starts and
stops too frequently.
5. The pump
gives electric
shocks.
a) Insufficient water. Check the water supply/suction
pipe.
b) Overheating due to excessive
liquid temperature
(above +95 °F/+35 °C).
c) Overheating due to seized-up/
choked-up pump.
d) Too low or too high supply volt-
age.
e) No electricity supply. Connect the electricity supply.
f) No water consumption. Open a tap. Check that the height
g) Shaft is blocked. Rotate the shaft as described in 10.2
h) Pump is in alarm condition. Reset the pump by means of the on/
a) Existing pipework is leaking or
defective.
b) Non-return valve is blocked or
missing.
a) Dry running. Check the water supply/
b) Overheating due to excessive
liquid temperature
(above +95 °F/+35 °C).
c) Overheating caused by:
– high ambient temperature
(> 113 °F/45 °C)
– overloaded motor
– seized-up motor/pump.
d) Too low supply voltage. Check the supply voltage and cor-
a) Leakage in suction pipe or air
in water.
b) Too low or too high pressure in
pressure tank.
a) Defective ground connection. Connect the ground connection to
Supply cold liquid to the pump.
Contact your pump supplier.
Check the supply voltage and correct the fault, if possible.
between the top point of the discharge pipe and the pump does not
exceed 50 ft.
off button. See point 2 in the t able o f
section 9.1 Control panel.
Repair the pipework.
Clean the valve or fit a new nonreturn valve.
suction pipe.
Supply cold liquid to the pump.
Contact your pump supplier.
rect the fault, if possible.
Check the water and the supply/suc-
tion pipe.
Check the pressure in the pressure
tank. See section 6. Operating con-
ditions.
the pump in accordance with local
regulations.
English (US)
19
English (US)
Fault Cause Remedy
6. The pump
starts when no
water is consumed.
If the pump does not start when the fault has been corrected, contact your pump supplier or
Grundfos for further information.
a) Internal non-return valve is
defective, or the existing pipework is leaking or defective.
Clean the valve or fit a new one.
20
15. MQ frequently asked questions
1. What causes the MQ to start?
Answer: The MQ is equipped with both an
internal flow switch and pressure switch.
Each of these can turn the MQ on, depending on water consumption. The pump will
start when:
The flow rate is greater than 0.3 gpm
OR
the pressure is below 29 psi.
2. What causes the MQ to stop?
Answer: Other than the manual on/off button, only the flow switch is authorized to
automatically stop the MQ during normal
operation when flow drops below 0.3 gpm.
The pump will shut off in 12-15 seconds
after flow stops.
Additionally , the MQ will be turned of f in the
event of a dry-run or overtemperature
alarm.
3. What is the maximum height of a tap
above the MQ?
Answer: If a tap or faucet is installed at
heights greater than 50 ft above the MQ,
there is the potential risk that the MQ will
never start. In cases where the MQ starts
due to low pressure (low flow rates), the
pressure has to fall below the pressure
switch activation point (28- 30 psi facto ry
setting). To allow for the pressure of 50 f t of
water, tolerances and a safety margin, we
recommend a maximum height of 50 ft
between the MQ and any tap.
4. What is the purpose of the built-in pres-
sure tank?
5. How is the dry-run condition deter-
mined?
Answer: The dry-run alarm is declared
when the motor is running AND the flow
rate is less than 1.6 gpm AND when pressure is less than the pressure switch setting. When this condition lasts for 12 seconds, the alarm will be declared after
1 minute, and the motor is stopped.
The MQ attempts to automatically restart
every 30 minutes for a maximum of
24 hours. If more than 24 hours pass without water, the pump must b e restarted manually.
6. What is the maximum inlet pressure
allowed in the MQ?
Answer: For both MQ 3-35 and MQ 3-45,
the maximum internal pressure allowed is
109 psi. The maximum inlet pressure when
added to the MQ pressure must not exceed
109 psi.
Remember that inlet pressure adds to the
MQ pressure, so with a 40 psi inlet pressure supplied to the MQ 3-45, internal pressures can reach approximately 105 psi
(65 + 40 psi).
Additionally, if inlet pressures exceed the
built-in pressure switch activation point
(28-30 psi factory setting), the pressure
switch will be unable to activate, and the
ability to turn the MQ on at low flow rates
will be lost. In this situation, only the flow
switch will be able to turn the MQ on at flow
rates above its activation point of 0.3 gpm
7. What is the priming capacity of the MQ?
Answer: Approx. 1.2 gallons.
English (US)
Answer: The built-in pressure tank comes
from the factory, pressurized at approximately 23 psi (with the pump pressure at
zero) and holds a volume of 14 ounces of
water. It is designed to minimize motor
startup due to small leaks.
21
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