DAYLIFF DQ 15F Installation instructions

DQ
Circulator Pumps
Installation &
Operating Manual
DQ 25/32DQ 15F
DQ 40/50/65

PUMP SPECIFICATIONS
1.
1
3.
INSTALLATION 5
OPERATION
4.
6
TROUBLE SHOOTING
6.
8
INDEX
© Davis & Shirtliff Ltd 2020
Contents herein are not warranted
TERMS OF WARRANTY
7.
9
MAINTENANCE
5.
8
2.
WARNINGS AND SYMBOLS 4

1
1. PUMP SPECIFICATIONS
Congratulations on selecting a Dayliff DQ Pump. They are
manufactured to the highest standards and if installed and operated
correctly will give many years of efcient and trouble free service.
Careful reading of this Installation Manual is therefore important,
though should there be any queries they should be referred to the
equipment supplier.
DQ 25/32DQ 15F DQ 40/50/65
0.5 1.0 1.5 2.0 2.5 03
FLOW RATE (m /hr)
PUMP HEAD (m)
2
4
6
8
10
DQ 15F
Speed1 Speed2 Speed3
0.5 1.0 3.0 3.5 4.0 0 2.51.5 2.0
1
2
3
4
5
6
7
DQ25/60
Speed2
Speed1 Speed3
2468 9 100
1
2
3
4
5
6
7
9
8
DQ32/80
520 40 50
8
0
14
12
6
2
3
FLOW RATE (m/hr)
30
DQ65/110
DQ50/120
DQ40/100
4
10
10 15 25 35 45
3
FLOW RATE (m /hr) 3 FLOW RATE (m /hr)
3
FLOW RATE (m /hr)
PUMP HEAD (m)
DQ40/50/65

2
PUMP
DAYLIFF DQ circulator pumps are designed for hot water circulation in heating,
hot water, cooling and air conditioning applications in open or closed systems.
They can also be used for pressure boosting in domestic dwellings and for
circulation in solar hot water systems. Specifications are offered as follows;
DQ15F - A single speed pump that includes a built-in flow switch which activates
pump operations whenever there is supply demand. This is particularly applicable
to domestic shower pressure boosting.
DQ 25/32 - Pumps are provided with 3 speed settings for selection of the ideal
flow to meet system requirements. No automatic switching is provided.
Pump construction is cast iron pump housing, glass fibre reinforced polypropylene
impeller, stainless steel rotor and ceramic bearing support. All pumps are supplied
complete with female threaded BSP union connections.
DQ40/50/65 - Pumps are used where duty requires high water volumes at
low pressures. Pump construction is AISI304 stainless steel for the impeller and
shaft, cast iron for the pump body and aluminum for the rotor housing.
MOTOR
DQ15F/25/32 - The integral 2-pole asynchronous squirrel-cage motor is
designed to operate at three speeds (except DQ15F which is single speed). All
motors include an inbuilt capacitor and overload protection and can be
connected directly to mains supply through a 5A fuse or MCB.
DQ40/50/65 - The integral 2-pole asynchronous squirrel-cage motor is
designed to operate at one speed. It can be connected directly to mains supply
through an MCB and suitably sized DOL starter.
Enclosure Class: DQ15F, 32/80 - IP54, DQ40/50/65 - IP44
Insulation Class: DQ15F, 32/80 - F, DQ40/50/65 - B
Voltage:DQ15F, 32/80 - 1x240V, DQ40/50/65 -3x415V
Speed:2900rpm
OPERATING CONDITIONS
Pumped Liquid: Thin, clean, chemically non-aggressive liquids without solids
or fibres.
0 0
Max Fluid Temperature:-10 C -110 C. Note the liquid temperature should
be higher than the ambient temperature.
0 0
Max. Ambient Temperature: 10 C - 50 C
Max. Operating Pressure: 6 bar
Installation: Pumps must be installed with rotor shaft horizontal and vertical
water flow.
Certification: CE, ISO14001, OHSAS18001, ISO9001

3
PUMP DATA
Model Power
(W)
Current
(A)
Dimensions (mm) Weight
(kg)
W
H
245 5.6
180
1.1
DQ 32/80
L
175 150
Inlet/
Outlet
2”
93 3180
0.45
DQ 25/60 125 90
1½”
120 4160 105.5 144
¾”
DQ 15F 0.55
Model
Power
(Watts)
Current
(A)
Dimensions (mm) Weight
(kg)
ED2
550 305 70 150 110 40 250 200
1100 315 75 165 125 50 280 205
DQ65/110
B
DQ40/100
DQ50/120
1500 330 80 188 145 65 340 210
LD1B1 D
1.8
2.3
2.9
22
28
34
Inlet/
Outlet
2
1½”
2½”
DQ 25/60
DQ 32/80
WH
L
160
DQ 15F
DQ 40/50/65
144
¾ “
“
105.5
B
B1
D
D1
D2
L
E

2. WARNINGS AND SYMBOLS
WARNING
The pump must not be installed against wood or any
other material which may be affected by heat from the
pump.
WARNING
Before installing the pump ensure all soldering/welding
adjacent to the pump is complete, the system has been
thoroughly ushed out to remove any foreign matter and
that vent and feed pipes are positioned so that the pump
will not draw in air or over pump.
WARNING
It is advisable to ensure the impeller is free by rotating
manually through the outlet.
WARNING
The pump should not be installed in either a high point in
the system where air can collect or a low point where
sediments could build up.
WARNING
Pipes on both sides of the pump should be supported to
reduce strain and must be correctly aligned prior to
installing the pump to reduce the risk of scalding.
WARNING
The pump must be installed with the rotating shaft
horizontal.
WARNING
Check the direction of ow indicated by an arrow on the
pump casing and install the pump between the isolating
valves. When replacing a pump maintain the same
direction of ow.
WARNING
Use approved makes of additives with corrosion
inhibitors only and follow manufacturer’s instructions.
Do not leave system empty without protection from
corrosion inhibitor.
WARNING
No non-approved replacement parts may be used.
4

WARNING
Ensure no water leakage onto the pump motor or its
electrical connections during installations, venting or
operation as this may cause electrical shocks.
WARNING
Any action that doesn’t comply with safety warning sign
may cause personal injury, pump damage and losses in
property. Users must also comply with the local safety
regulations.
WARNING
Do not install the pump in moist places.
WARNING
For easy maintenance, it is recommended to install
separate valve at the inlet and outlet of the pump. Those
should be closed when the pump is not in use for a long
time.
WARNING
Dry running will void warranty.
WARNING
The pump should be stored in a cool, dry and well
ventilated place.
3. INSTALLATION
3.1 Electrical Connection
ŸIf the electrical connection block is not in a convenient position when the
circulator pump is delivered, the motor head may be rotated prior to fitting.
Release the screws on the pump casing and rotate the motor head to its
new position.
1. Take care not to remove or damage the ‘O’ ring seal between motor
head and pump casing.
2. Tighten the fixing screws in a diagonal pattern in stages to final torque of
25kg cm.
3. Check that the motor turns freely by loosening the manual Restart Knob
until it engages in the motor shaft. The motor should then be free to turn
with the finger tips.
5

NOTE
After use, the Manual Restart knob, should be screwed
back nger tight into its original position.
WARNING
Ensure no uid drips onto the pump motor or its electrical
connections during installation, venting or operation as
when the pump is energised this may create a risk of
electric shock .
WARNING
Electrical work to be carried out by competent qualied
and licensed electrician.
ŸObserve pump name plate data.
ŸFor the pump fuse protection use 3 Amp fuse.
ŸA means of disconnection from the power supply having a contact
separation of at least 3mm in all poles must be provided.
ŸIf the pump already has a cable fitted to it , ensure the pump is isolated from
the mains before removing the terminal cover.
Wiring Procedure
2
ŸUse heat resistant 3x0.755mm core cable with rubber insulation rated at
0
110 C minimum.
ŸCut the cable to required length.
ŸRemove terminal cover, and thread cable through grommet.
ŸRefit terminal cover, locating cover onto motor and tighten screws.
ŸThe cable must not come in contact with the pump body or pipework.
WARNING
In normal operation the pump surface can be hot (up to
0
125 C) creating a risk scalding.
ŸOpen both valves on either side of the pump.
WARNING
Ensure that the pump is properly earthed.
4. OPERATION
WARNING
During commissioning beware of the risk of scalding
from escaping hot water or steam.
6

ŸBefore switching the pump on, the manual restart should be unscrewed
and withdrawn to engage the motor shaft. Check that the shaft rotates
freely and that the knob can be seen rotating on initial start up of the pump.
ŸScrew manual restart back in.
Air/ Bleeding
ŸWhen the system is filled with water the pump will normally self vent air
within a short while of switching on. In cases where the pump venting is
slow (identified by pump noise) the pump bearings may be vented by using
the manual restart knob.
WARNING
During this operation be aware of the risk of scalding
from escaping hot water or steam. Ensure the pump is
switched off.
NOTE
A system may take 24 hours to vent all the air in the
system. Ensure that the pump does not run dry as this will
result in bearing failure.
ŸOnce the system has filled, switch off the pump, unscrew the manual restart
knob applying sideways pressure to the screw until water emerges from it.
Screw the manual restart knob back in. Switch pump back on.
ŸOutput of the range of domestic circulators is by 3 speed control.
WARNING
Speed regulator adjustment should only be made with
electrical supply switched off.
ŸIt is always preferable to use the lowest performance where this gives
circulation sufficient to heat evenly (uneven distribution of heat may be due
to the need to balance the flow o f water in heat emitter.
ŸIf the pump performance requirement is not known start with the lowest
pump setting. If heat emitters remain cold or if the boiler inlet and outlet
temperature differential (specified by the manufacturers of the boiler) is not
achieved increase the flow by adjusting the speed control.
WARNING
Too high a speed setting may result in over pumping over
or drawing in air.
Do not use pump isolating valves for performance
control.
7

5. MAINTENANCE
ŸNo routine maintenance is necessary, however, during prolonged shut
down it is advisable to run the pump for a few minutes every few weeks.
Locked pump
ŸShould the pump fail to start, switch to maximum setting. If the pump still
does not start, the manual restart knob may be used to free a locked pump.
Once the pump is running the regulator should be reset to its original
position.
6. TROUBLE SHOOTING
PROBLEM
Pump fails to start
Pump start but provides
incorrect circulation
Noise
SOLUTION
Check power supply fuses
Check voltage at pump terminals
Check electrial connection wiring procedure
Check if rotor is free to rotate
Check if pump valves are open
Check if pump case and system is adequately vented
Ensure correct electrical settings
Check electrical setting and adjust as required
Noise due to cavitation can be subdued by increasing the system
pressure within the permissible limits
Pump may require 48 hours to attain normal quiet operation
8

If equipment failure occurs in the normal course of service having been
competently installed and when operating within its specified duty limits warranty
will be provided as follows:-
ŸUp to 1 year - The item will be replaced or repaired at no charge.
ŸOver 1 year, less than two years - The item will be replaced or
repaired at a cost to the customer of 50% of the Davis & Shirtliff
market price.
The warranty on equipment supplied or installed by others is conditional upon the
defective unit being promptly returned free to a Davis & Shirtliff ofce and
collected thereafter when repaired. No element of site repair is included in the
warranty and any site attendance costs will be payable in full at standard
charegeout rates. Also proof of purchase including the purchase invoice must be
provided for a warranty claim to be considered.
ŸIn lieu of any warranty, condition or liability implied by law, the liability of Davis
& Shirtliff (hereafter called the Company) in respect of any defect or failure of
equipment supplied is limited to making good by replacement or repair
(at the Company’s discretion) defects which under proper use appear therein
and arise solely from faulty design, materials or workmanship within a
specified period. This period commences immediately after the equipment
has been delivered to the customer and at its termination all liability ceases.
Also the warranty period will be assessed on the basis of the date that the
Company is informed of the failure.
ŸThe warranty applies solely to equipment supplied and no claim for
consequential damages, however arising, will be entertained. Also the
warranty specifically excluded defects caused by fair wear and tear, the effects
of careless handling, lack of maintenance, faulty installation, incompetence
on part of the equipment user, Acts of God or any other cause beyond the
Company’s reasonable control. Also, any repair or attempt at repair carried
out by any other party invalidates all warranties.
7. TERMS OF WARRANTY
i) General Liability
ii) Standard Warranty
9

INS341C-04/18