DAYLIFE DWX Drainage Pumps User Manual

DAYLIFE DWX Drainage Pumps

Thank you for choosing Dayliff DW pump. The pump has been manufactured to the highest standards and if operated correctly should give many years of efficient and trouble free service. Careful reading of this instruction manual is therefore extremely important and if you have any queries please refer them to your retailer.

PUMP SPECIFICATIONS

Pump
The DAYLIFF DWX range of waste water pumps are high specification products for use in various drainage applications. Versions are available with open (DWXD) and vortex (DWXV) impellers. The DWXD model features a jacketed motor casing with top mounted outlet suitable for lightly silted water and can operate partially submerged. The DWXV model features a side outlet and is suitable for heavily polluted waters. Material of construction for both models is AISI 304 stainless steel construction throughout. Other features include single mechanical seals, a low level switch and l Om of power cable for all but DWXV07 A which is supplied with Sm cable.
Motor
Pumps are provided with dry type two pole motors designed for continuous duty. They are fitted with integral thermal protectors and can be connected directly to mains power supply through a suitably rated fuse or MCB, though additional protection is recommended where there is risk of voltage fluctuation.

• Enclosure Class: I P68
• Insulation Class:F
• Voltage: l x240V
• Speed: 2900rpm

Pump Data

Model

| Power| ****

Current (A)

| ****

Outlet

(“)

| Dimensions (mm)| Particle Size

(mm)

| h Weig  t

(kg)

---|---|---|---|---|---|---
HP| kW| Hl| H2| H3| L| w
DWXD 07A| 0.75| 0.55| 3.6| ****

1.5

| 437| 357| 85| 459| ****

178

| ****

8

| 12
DWXD 15A| l.5| l.l| 7.2| 497| 407| 85| 514| 17
DWXV07A| 0.75| 0.55| 3.6| l.S| 403| 483| 185| ****

433

| 193| 35| ll
DWXV 15A| l.S| l.l| 7.2| 2.0| 486| 566| 268| 198| so| 15

INSTALLATION

• Lower the pump into the well by attaching a chain or rope to the grip to install the pump.
• The pump must not be installed on its side or operated under dry condition. Ensure that it is installed upright on a secure base.
• Install the pump at a location in the tank SlopWaterLevel where there is least turbulence.
• If there is flow inside the tank, support the piping appropriately. The pipes must be installed such as to prevent air lock, if unavoidable, an air release valve must be installed wherever such air pockets are likely to develop.
• The end of discharge pipe should not be submerged as back flow will result when the pump is shut down.
• Install the float switch as shown in the figure above. The pump may not start if the float switch touches the wall of the water tank or the piping.

warning If the pump is operated continuously for an extended period of time in a dry condition or at the lowest water level, the motor will overload and shut down. Prolonged overheating will shorten pump service life. Do not start the pump again in such a situation until after the motor has completely cooled.

ELECTRICAL CONNECTIONS

warning The installer is responsible for making electrical connections to the mains 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 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.
• The motors being single-phase are protected against overloads by a thermal overload fitted in the motor windings.

MAINTENANCE

• Regularly check the current readings. If fluctuating, foreign matter may be clogging the pump. Also if pump output reduces, foreign matter may be present and the pumps hydraulic end should be checked and cleaned.
• Measure the insulation resistance monthly. The value should be more than l M ohm. If resistance starts to fall rapidly even with an initial indication of over l M ohm, this will be an indication of a reduction in motor integrity and a qualified electrician should be consulted.
• To prolong the service life of the mechanical seal, replace the oil in the mechanical seal chamber once a year.
• Water mixed with the oil or cloudy mixtures are indications of a defective mechanical seal which requires replacement. When replacing the oil, lay the pump on its side with filler plug on top and inject suitable amount of turbine oil No.32 (ISO VG-32)
• After 3-Syears conduct an overhaul of the pump, for general maintenance.
• Replace the appropriate part when the following conditions are apparent.

| Mechanical

Seal

| Oil Filter Plug

Gasket

| Lubrication

Oil

| O-ring
---|---|---|---|---

Replacement guide

| Whenever oil in mechanical seal chamber i s

cloud y

|

W henever oil is replaced

|

W h e n e v e r cloudy or dirty

|

W hene ver pump i s ove rhauled

Frequency

|

Annuall y

|

Half yearl y

|

Half yearl y

|

Annually

TROUBLESHOOTING

TERMS OF WARRANTY

General Liability

• In 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.
• This warranty applies solely to 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 Company’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 office 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 chargeout rates. Also proof of purchase including the purchase invoice must be provided for a warranty claim to be considered.

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

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