Grundfos MQ User manual

GRUNDFOS INSTRUCTIONS
MQ
Installation and operating instructions
US
C
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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 morethan 30 monthsfrom
date of manufacture. Grundfos' liability under this warranty shall be limited to repair-
ing 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 manu-
facturer 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 together
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 sup-
porting the warranty claim and/or a Return Material Authorization must be included
if so instructed.
GRUNDFOS WILL NOT BE LIABLE FOR ANY INCIDENTAL OR CONSEQUEN-
TIAL DAMAGES, LOSSES, OR EXPENSES ARISING FROM INSTALLATION,
USE, OR ANY OTHER CAUSES. THERE ARE NO EXPRESS OR IMPLIED WAR-
RANTIES, 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 conse-
quential damages and some jurisdictions do not allow limit actions 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
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MQ
Contents
3
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
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English (US)
English (US) Installation and operating instructions
CONTENTS
Page
1. Introduction
The MQ is a low-noise water supply system
consisting of pump, motor, pressure tank and
controller combined into one compact unit.
The system is suitable for both indoor and out-
door use.
The self-priming pump starts automatically
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 user-
friendly control panel.
The built-in pressure tank reduces the number
of starts and stops in case of leakage in the
installation.
2. Items supplied
The MQ packaging contains these items:
• MQ water supply system with built-in non-
return valve
• non-return inlet valve in plastic bag
• installation and operating instructions.
1. Introduction 4
2. Items supplied 4
3. Symbols used in this document 5
4. Applications 5
4.1 Pumped liquids 5
5. Identification 6
5.1 Type key 6
6. Operating conditions 7
6.1 Suction lift 7
7. Mechanical installation 8
7.1 Location 8
7.2 Foundation 8
7.3 Space requirement 8
7.4 Pipework 8
7.5 Protective cover 10
8. Electrical connection 11
8.1 Generator or inverter 11
8.2 Wiring diagram 12
8.3 Winding resistance measurement 12
8.4 Winding resistance measurement 13
8.5 Start-up 14
9. Functions 15
9.1 Control panel 15
9.2 Pump stop 16
10. Maintenance 17
10.1 Service kits 17
10.2 Start-up after a long period of inactivity 17
11. Service 17
12. Technical data 18
12.1 Dimensions 18
12.2 Electrical data 18
12.3 Approvals 18
13. Accessories 18
14. Fault finding chart 19
15. MQ frequently asked questions 21
16. Disposal 22
WARNING
Prior to installation, read these
installation and operating instruc-
tions. Installation and operation
must comply with local regula-
tions and accepted codes of good
practice.
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3. Symbols used in this document
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.
4.1 Pumped liquids
Thin, clean, non-aggressive liquids, not con-
taining solid particles or fibres.
WARNING
If these safety instructions are not
observed, it may result in personal
injury!
Caution
If these safety instructions are not
observed, it may result in malfunc-
tion or damage to the equipment!
Note
Notes or instructions that make
the job easier and ensure safe
operation.
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5. Identification
5.1 Type key
Fig. 1 MQ water supply system. Protective cover is required for outdoor use.
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
TM04 3648 4908
Base plate
Drain plug
Suction
port
Priming plug
Discharge port Control panel Pressure
tank cover
End-cover
plug
Protective cover
(accessory)
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6. Operating conditions
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 suc-
tion pipe must not exceed 72 ft.
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
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7. Mechanical installation
7.1 Location
The pump is suitable for indoor and outdoor
installation. It is resistant to sunlight.
7.2 Foundation
Mount the pump on the base plate with hori-
zontal suction port and vertical discharge port.
The pump must be installed horizontally.
The maximum permissible inclination angle is
± 18 °. See fig. 2.
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 sec-
tion 7.4 Pipework.
7.3 Space requirement
For inspection and service, allow a minimum
clearance of 60" behind the pump.
Fig. 3 Minimum clearance behind the
pump
Being self-cooling, the pump requires no
space or ventilation at the sides.
7.4 Pipework
The pump is supplied with 1" NPT screwed
connections. Fit the connections in the suction
and discharge ports. See fig. 4. The pump dis-
charge port is flexible, ± 5 °, to facilitate the fit-
ting.
Fig. 4 Fitting of screwed connections in
suction and discharge ports
Note
For outdoor installation, the pump
must be fitted with a protective
cover (accessory). See section
7.5 Protective cover and
13. Accessories.
Note
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 unde-
sirable collateral damage can
arise.
TM01 9691 2600
Max. ± 18 °
TM04 3746 5008
Note
Ensure that the maximum ambient
temperatures do not exceed the
values stated in section
6. Operating conditions.
Note
Never use unnecessary force
when connecting the pipes.
TM01 9698 2600
60"
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Carefully screw the discharge connection into
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 rec-
ommend to fit a foot valve to the end of the
suction pipe. See fig. 7.
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 non-
collapsible type.
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-
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 suc-
tion port in the direction shown in fig. 8.
3. Refit the pump connection.
Fig. 8 Fitting of non-return inlet valve
TM04 4271 1009TM 044272 1009TM01 9693 2600
Foot valve
Note
Applications with positive inlet
pressure do not require installa-
tion of the non-return inlet valve,
due to the fact that the MQ pump
incorporates an internal non-
return valve at the discharge side.
TM 04 4121 0809
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7.5 Protective cover
The protective cover protects the control panel
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 out-
wards, free of the cooling ribs, and pull the
cover upwards.
Fig. 9 Protective cover
Note
Failure to use the protective cover
in outdoor installations will invali-
date the warranty.
TM04 3745 5008
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8. Electrical connection
The electrical connections and additional pro-
tection should be carried out by qualified per-
sons in accordance with local regulations.
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.
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.
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
WARNING
Non-submersible pump.
If the power cord is damaged, it
must be replaced by the manufac-
turer, 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 ground-
ing type attachment plug.
To reduce the risk of electric
shock, install only on circuit pro-
tected by a Ground-Fault-Circuit-
Interrupter (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.
TM01 9694 2600TM01 9695 2600
Note
The MQ can be powered by a gen-
erator or an inverter. However, the
pump will only operate satisfacto-
rily if the generator or inverter
generates a true sinusoidal wave
with the necessary power and volt-
age input. The generator must be
sized 10 % above the P1
(input power) of the pump. For P1,
see section 12.1 Dimensions.
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8.2 Wiring diagram
8.2.1 115 V
Fig. 12 Wiring diagram - 115 V
8.3 Winding resistance measurement
The measurement can be done with or without cables connected to the PCB and the capacitor.
TM02 2424 4708
Black (phase)
Red
Black
Orange > Flow sensor
> Pressure switch
Capacitor
Yellow
Yellow
Electric motor
Yellow/green (ground)
Red (main)
Black
White (neutral) > Cable
BA
Yellow
White C
Motor
[V/Hz] Measuring point Winding Resistance [± 10 %]
Ambient temperature
[°F] [°C]
115/60 A-B (black - red) Main 1.4 70 21
A-C (black - white) Aux 5.5
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8.3.1 230 V
Fig. 13 Wiring diagram - 230 V
8.4 Winding resistance measurement
The measurement can be done with or without cables connected to the PCB and the capacitor.
TM02 2424 2409
Black (phase)
Red
Black
Orange > Flow sensor
> Pressure switch
Capacitor
Yellow
Yellow
Electric motor
Yellow/green (ground)
Blue
White (neutral) > Cable
BA
Yellow
White
Motor
[V/Hz] Measuring point Winding Resistance [± 10 %]
Ambient temperature
[°F] [°C]
230/60 A-B (blue - red) Main 5.4 70 21
A-C (blue - white) Aux 5.4
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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 self-
prime, 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 auto-
matically 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
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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.
Fig. 15 Control panel
The functions of the control panel are described in the table below:
TM01 9684 2600
Illustration Description
1Indicator light (red)
When the indicator light is on, the pump is on standby.
2On/Off button
The pump is started/stopped by means of the on/off
button.
The on/off button can also be used for manual reset-
ting in case of an alarm condition:
• press once for resetting and
• press once more for starting.
3Indicator 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.
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9.2 Pump stop
The pump incorporates an electronic protec-
tive 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).
4Pump on (green)
The indicator light is on when the pump is running.
5Auto reset (green)
As standard, this function is activated on delivery.
• When the indicator light is on, the auto-reset func-
tion 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 func-
tion 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.
6Alarm (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.
Note
The pump settings are stored.
After supply failure, the pump will
automatically revert to its previous
operating condition when the elec-
tricity supply is reconnected.
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10. Maintenance
Under normal operating conditions, the pump
is maintenance-free. However, it is recom-
mended to keep the pump clean.
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 pump
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. Service
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 mat-
ter 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.
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.
TM01 9697 4403
TM04 3633 4608
Note
If a pump has been used for a liq-
uid that is injurious to health or
toxic, the pump will be classified
as contaminated.
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12. Technical data
12.1 Dimensions
12.2 Electrical data
12.3 Approvals
UL-listed and CSA-approved.
13. Accessories
TM01 9799 508
MQ 3-35 MQ 3-45
Enclosure type 3
Enclosure class IP 54
Insulation class B
Supply cable 6.56 ft SJTW 18 awg
with/without plug
Voltage,
power consumption,
P1[W]
1 x 115-120 V – 10/+ 6 %,
60 Hz 900 W/8.0 A 1100 W/10.0 A
1 x 220-240 V – 10/+ 6 %,
60 Hz 850/4.0 A 1050/4.8 A
Model Designation Product number
MQ 3-35 / MQ 3-45 Protective cover 96590745
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14. Fault finding chart
Fault Cause Remedy
1. Thepumpdoes
not start. a) Insufficient water. Check the water supply/suction pipe.
b) Overheating due to excessive
liquid temperature
(above +95 °F/+35 °C).
Supply cold liquid to the pump.
c) Overheating due to seized-up/
choked-up pump. Contact your pump supplier.
d) Too low or too high supply volt-
age. Check the supply voltage and cor- rect the fault, if possible.
e) No electricity supply. Connect the electricity supply.
f) No water consumption. Open a tap. Check that the height
between the top point of the dis-
charge pipe and the pump does not
exceed 50 ft.
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/
off button. See point 2 in the table of
section 9.1 Control panel.
2. Thepumpdoes
not stop. a) Existing pipework is leaking or defective. Repair the pipework.
b) Non-return valve is blocked or
missing. Clean the valve or fit a new non- return valve.
3. The pump cuts
out during
operation.
a) Dry running. Check the water supply/
suction pipe.
b) Overheating due to excessive
liquid temperature
(above +95 °F/+35 °C).
Supply cold liquid to the pump.
c) Overheating caused by:
– high ambient temperature
(> 113 °F/45 °C)
– overloaded motor
– seized-up motor/pump.
Contact your pump supplier.
d) Too low supply voltage. Check the supply voltage and cor-
rect the fault, if possible.
4. The pump
starts and
stops too fre-
quently.
a) Leakage in suction pipe or air
in water. Check the water and the supply/suc- tion pipe.
b) Too low or too high pressure in
pressure tank. Check the pressure in the pressure tank. See section 6. Operating con-
ditions.
5. The pump
gives electric
shocks.
a) Defective ground connection. Connect the ground connection to
the pump in accordance with local
regulations.
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If the pump does not start when the fault has been corrected, contact your pump supplier or
Grundfos for further information.
6. The pump
starts when no
water is con-
sumed.
a) Internal non-return valve is
defective, or the existing pipe-
work is leaking or defective.
Clean the valve or fit a new one.
Fault Cause Remedy
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