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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

B e f o r e   i n s t a l l i n g   t h e   p u m p   e n s u r e   a l l 
soldering/welding adjacent to the pump is complete, 
the system has been thoroughly flushed 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 flow 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 flow.

WARNING

Use  approved  makes  of  additives  with  corrosion 
i n h i b i t o r s   o n l y   a n d   f o l l o w   m a n u f a c t u r e r ’ s 
instructions.  Do  not  leave  system  empty  without 
protection from corrosion inhibitor.

WARNING

No non-approved replacement parts may be used.

Summary of Contents for DQA

Page 1: ...DQA Circulator Pumps Installation Operating Manual...

Page 2: ......

Page 3: ...PUMP SPECIFICATIONS 1 1 3 INSTALLATION 4 OPERATION 4 7 TROUBLE SHOOTING 6 10 INDEX Davis Shirtliff Ltd 2020 Contents herein are not warranted TERMS OF WARRANTY 7 11 MAINTENANCE 5 10 2 WARNINGS 3...

Page 4: ...adjusted according to system demand and constant pressure where pressure remains constant irrespective of system demand Three selectable speeds so the pump performance can be matched to system require...

Page 5: ...ATING CONDITIONS Pumped Liquid Thin clean chemically non aggressive liquids without solid particles or fibres 0 0 Liquid Temperature 10 C to 110 C 0 Max Ambient Temperature 10 50 C Max Operating Press...

Page 6: ...led 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 co...

Page 7: ...or 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 If the electrical connection bl...

Page 8: ...e power supply having a contact separation of at least 3mm in all poles must be provided If the pump already has a cable fitted to it ensure the pump is isolated from the mains before removing the ter...

Page 9: ...prevent water leakage The location of terminal box can be adjusted accordingly to users request To achieve this Isolate power supply Watch out for high water temperature Close the valves at inlet and...

Page 10: ...Pressure Curve Max Proportional Pressure Curve Night Mode LED Display Power Auto Adaptation Speed I III A PPI CPII CPI Speed II Speed III Night Operation is effected by pressing button The pump will r...

Page 11: ...se CPI Min constant pressure curve According to the flow rate of system demand the pump working point changes on the basis of min constant pressure curve The constant pressure of pump is irrelevant wi...

Page 12: ...k that the shaft rotates freely and that the knob can be seen rotating on initial start of the pump Venting Bleeding When the system is filled with water the pump will normally self vent air within a...

Page 13: ...ator adjustment should only be made with electrical supply switched off 6 TROUBLE SHOOTING PROBLEM Pump fails to start Pump start but provides incorrect circulation Noise SOLUTION Check power supply f...

Page 14: ...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 und...

Page 15: ......

Page 16: ...INS449A 02 20 www davisandshirtliff com...

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