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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English (US)
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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English (US)
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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English (US)
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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