DAYLIFF DDP50A Domestic Pumps User Manual

DAY LIFE DDP50A Domestic Pumps

Congratulations on selecting a Dayliff Domestic Pump. They are manufactured to the highest standards and if installed and operated correctly will give many years of the fund trouble-free service. A careful reading of this Installation Manual is therefore important, though should there be any queries they should be referred to the equipment supplier.

PUMP SPECIFICATIONS

PUMPS
The Dayliff DD pump range is specially designed for all small-scale domestic and commercial water supply uses. Model options are available as follows:
DDP: High-specification peripheral pumps that feature copper windings, a high-capacity motor, and stainless steel housing inserts to ensure free impeller movement. The pump body is manufactured from cast iron and the impeller from brass. DDP60E is of lighter construction and does not feature stainless steel housing inserts. DDP50A incorporates mechanical pressure control start and stop while DDP65A incorporates an electronic microprocessor that starts and stops the pump automatically,

DDC: Centrifugal non-self priming closed impeller pumps particularly suited for water boosting and transfer applications. The pump body is cast iron and the impeller is stainless steel for DDC 158 and brass for DDC 170.

DDJ: Centrifugal jet-type pumps that incorporate an integral ejector unit to provide highly effective self-priming performance. The pump body is made from cast iron, the ejector from engineering plastic, and the impeller from brass.

DDS: Centrifugal single impeller non-self-priming pump. The pump body, backplate, and impeller are made from 304 stainless steel.

DDG: Single-stage centrifugal impeller self-priming design. Materials of construction are stainless steel for the pump body, shaft, and back plate with the impeller made from polypropylene.

DDT : Single-stage centrifugal impeller self-priming design suitable for small-scale irrigation, water boosting, and water transfer applications. Material of construction is a stainless shaft, UV-proof composite material for the pump body, and all hydraulic components in contact with water are made of engineering plastic.

MOTORS
Pumps are close-coupled to reliable TEFC electric motors designed for continuous operation and are provided with a thermal cutout to protect against electrical overload. They can be connected directly to the main power supply through a 10A fuse or MCB.

• Enclosure Class: IP44
• Insulation Class: F
• Voltage:1x240V

Pump Data

4

| 1”| 315| 213| 232| 14
DDG1000| 0.8| 2.5| 1”| 1”| 336| 201| 244| 7
DDT| 0.75| 5.2| 1”| 1”| 388| 194| 198| 10.4

INSTALLATION

• Site in a dry, well-ventilated, and weatherproof location with an ambient temperature of no 0 more than 40 C.
• Locate on a solid flat surface ensuring the shaft is in a horizontal position.
• Ensure that the diameter of the suction pipe is at least the size of the pump suction inlet. If the suction depth exceeds 4 meters then a one-size larger diameter pipe should be used, though for maximum pump performance suction height should be minimized.
•  If there is negative suction (i.e. the pump is above the suction water level) the suction pipe must be slightly angled upwards toward the pump inlet to avoid the formation of airlocks. It must also be immersed in water by at least 0.5m to avoid the formation of vortexes and a good-quality foot valve must be fitted.
•  Ensure that all suction pipe connections are completely airtight or else the pump will not operate. The diameter of the delivery pipe must be chosen to suit the flow rate and pressure required at the delivery point though must not be smaller than the pump outlet size. It is also advisable to fit a non-return valve and isolating valve on the delivery outlet. This measure is essential if the delivery pressure exceeds 20 meters.

ELECTRICAL CONNECTIONS

The installer is responsible for making electrical connections to the main supply in compliance with relevant local regulations. Ensure that a professional electrician carries out the electrical connections and that the following guidelines are followed:-

•  All installations must be provided with an isolator to cut off the mains power supply and coarse current protection in the form of a fuse or MCB rated at 2-3 times the full load current as given on the pump plate.
•  Ensure that the power supply rating complies with the specification on the pump rating plate.
•  Electrical connections must be made according to details in the pump junction box cover and effective earthing must be provided according to local regulations.
•  Single-phase motors are protected against overloads by a thermal overload fitted in the motor windings.

PRIMING

All non-self-priming pumps must be primed before operation. To do this completely fill the pump housing with clean water through the priming plug before switching it on. When full replace the priming plug and start the pump checking there is a steady flow at the pump outlet. The pump should be primed whenever it has not been used for a long period of time or when air has entered into the system.

Serious damage will occur if a pump is not properly primed and runs without water.

MAINTENANCE

Pumps do not require routine maintenance provided the following precautions are taken:-

•  Check that the foot valve is clean and unrestricted at regular intervals.
•  If the pump is to remain unused for long periods of time it is advisable to empty it completely, rinse it with clean water, and store in a dry place.
•  If the shaft does not run freely, release it using a screwdriver by inserting it in the special slot on the rear of the pump shaft. If this is not sufficient to solve the problem remove the pump body by unscrewing the relevant mounting bolts and cleaning it thoroughly to remove any encrustation. Never carry out any work on the pump without having disconnected it
  from the main supply.

TROUBLESHOOTING

•  In lieu of any warranty, condition or liability implied by law, the liability of Dayliff (hereafter called the Distributor) in respect of any defect or failure of equipment supplied is limited to making good by replacement or repair (at the Distributor’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 Distributor is informed of the failure.
•  This warranty applies solely to the equipment supplied and no claim for consequential damages, however arising, will be entertained. Also the warranty specifically excludes defects caused by fair wear and tear, the effects of careless handling, lack of maintenance, faulty installation, incompetence on the part of the equipment user, Acts of God or any other cause beyond the Distributor’s reasonable control. Also, any repair or attempt at repair carried out by any other party invalidates all warranties.

Standard Warranty
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:-

•  Up to two years – The item will be replaced or repaired at no charge.
•  Over two years, less than three 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 e 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 a standard charge rate. Also, proof of purchase including the purchase invoice must be provided for a warranty claim to be considered.

• DAY LIFE is a brand of Davis & Shirtliff for inquiries contact
• Davis & Shirtliff, Ltd.
• P.O. Box 41762 – 00100, Nairobi, Kenya
• Tel: 6968000/ 0711 079 000 or visit www.daylifl.com for details of the nearest branch or stockist

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