DOA SP 20 Manual

Submersible trash pump with hydraulic motor

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USE - SAFETY AND

MAINTENANCE MANUAL

SUBMERSIBLE TRASH PUMP

WITH HYDRAULIC MOTOR

DOA

VIA CORTIVA

TEL +39 031 792040 FAX +39 031 791917

www.doa.it

October 2014 - V

SP 20

WP 25

SP 35

SP 45

IMPORTANT

READ MANUAL BEFORE USE

KEEP THIS MANUAL FOR

FUTURE CONSULTATIONS

s.r.l.

5 -

NOVEDRATE

22060

e-mail:

info@doa.it

EDITION

(Como) ITALY

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Summary of Contents for DOA SP 20

Page 1 USE - SAFETY AND MAINTENANCE MANUAL October 2014 - V EDITION SUBMERSIBLE TRASH PUMP WITH HYDRAULIC MOTOR SP 20 WP 25 SP 35 SP 45 IMPORTANT READ MANUAL BEFORE USE KEEP THIS MANUAL FOR FUTURE CONSULTATIONS s.r.l. NOVEDRATE VIA CORTIVA...
Page 2 INTRODUCTION Dear customer, congratulations for having purchased a DOA product. The tool you bought was manufactured with high quality materials and components to assure your maximum satisfaction and a long lasting service without problems. For your safety and obtaining the best result, we recommend to read this manual and respect the simple instructions contained, this will protect you from accidents and avoid damages to the equipment and things.
Page 3: Safety Symbols
IMPORTANT: WHEN THE EFFECTS OF A CERTAIN ACTION ARE NOT EXACTLY KNOWN, REMIND THAT EVEN THE SIMPLEST OPERATION MAY HIDE DANGERS. IN CASE OF DOUBTS DO NOT RISK – DO NOT MAKE EXPERIMENTS! ASK YOUR DOA DEALER OR YOUR FOREMAN.
Page 4: Description Of The Product
These tools can pump suspended solids in the liquid with dimension up to mm 12 the WP 25, mm 30 the SP 20 , mm 50 the SP 35 and mm 70 the SP 45. Thanks to the hydraulic functioning and manufacturing quality, pumps give very high performances and possibility to run dry without damages.
Page 5 WP 25 TECHNICAL CHARACTERISITCS GENERAL VIEW – MAIN COMPONENTS AND THEIR FUNCTIONS FEMALE QUICK COUPLER – Oil enters in pump from this female coupler ( PRESSURE LINE ). MALE QUICK COUPLER – Oil exit pump from this male coupler ( RETURN LINE ). SHORT HOSES (illustrated in the picture below) on some pumps are installed short hoses that have the function to get installation of couplers in an elastic position, on the hose with the MALE coupler there is installed a check valve that have the...
Page 6 SP 20 - SP35 TECHNICAL CHARACTERISITCS GENERAL VIEW – MAIN COMPONENTS AND THEIR FUNCTIONS MALE QUICK COUPLER - oil exits the pump from this coupler. FEMALE QUICK COUPLER - oil enters in the pump from this coupler. HYDRAULIC MOTOR COUPLING PLATE - fixes the motor to the pump body.
Page 7 CAMLOCK or UNI70 MALE ADAPTOR allow the connection of the discharge hose to the pump. SP 45 TECHNICAL CHARACTERISITCS GENERAL VIEW – MAIN COMPONENTS AND THEIR FUNCTIONS 1. MALE QUICK COUPLER - oil exits the pump from this coupler. 2. FEMALE QUICK COUPLER - oil enters in the pump from this coupler. 3.
Page 8 10. HANDLE - allow to lift the pump either by hand or by crane. WP 25 TECHNICAL CHARACTERISITCS WEIGHT AND DIMENSIONS TYPE submersible centrifugal pump with open impeller WEIGHT HEIGHT without pig tail hoses LENGTH MATERIAL Aluminium - steel - nylon PUMPING PERFORMANCES OUT PUT FLOW 1600 l/min (96 Cubic mxh)
Page 9 SP20 TECHNICAL CHARACTERISITCS WEIGHT AND DIMENSIONS TYPE submersible centrifugal open impeller WEIGHT HEIGHT 30 without short hoses LENGTH Aluminium – stainless steel MATERIAL PUMPING PERFORMANCES OUT PUT FLOW 800 l/min (48 Cubic mxh) WATER HEAD (PRESSURE ) 35 metres 2” BSP female DIMENSION OF DISCHARGE HOLE CONNECTION OF DISCHARGE HOSE UNI 45 type...
Page 10 SP 35 TECHNICAL CHARACTERISITCS WEIGHT AND DIMENSIONS TYPE Submersible mono canal closed impeller WEIGHT HEIGHT 37 without short hoses LENGTH Aluminium – stainless steel MATERIAL PUMPING PERFORMANCES OUT PUT FLOW 1600 l/min (96 Cubic mxh) WATER HEAD (PRESSURE ) 50 metres 3”...
Page 11 SP 45 TECHNICAL CHARACTERISITCS WEIGHT AND DIMENSIONS TYPE submersible centrifugal pump with open impeller WEIGHT HEIGHT without pig tail hoses LENGTH body and impeller in stainless steel – wear plate in urethane MATERIAL PUMPING PERFORMANCES OUT PUT FLOW 3000 l/min (180 Cubic mxh) WATER HEAD (PRESSURE ) 16 metres DIMENSION OF DISCHARGE HOLE...
Page 12: General Safety Norms
GENERAL SAFETY NORMS GENERAL SAFETY INSTRUCTIONS. THE FOLLOWING INSTRUCTIONS ARE GENERAL SAFETY RULES AND HAVE TO BE RESPECTED IN EVERY WORKS WITH HAND TOOLS. WE RECOMMEND TO FOLLOW THEM CAREFULLY IN ORDER TO AVOID ACCIDENTS AND DAMAGES TO THE EQUIPMENT AND THINGS ...
Page 13 THE CONTACT OF THE WATER WITH ELECTRIC ENERGIZED LINES CAN CAUSE SERIOUS ACCIDENTS AND THE DEATH.  The working area must be free from objects that may fall, get spoiled, catch fire, make trip up or make the operation difficult or dangerous. ...
Page 14: Use Of The Product
USE OF THE PRODUCT WHAT NOT TO DO THE FOLLOWING RULES ARE GIVEN FOR DESCRIBING THE MORE COMMON ERRORS OR IMPROPER AND DANGEROUS USE OF THE TOOL. SINCE IT IS IMPOSSIBLE TO FORESEE ANY ABUSE OR DANGEROUS SITUATIONS, THE RULES ARE NOT SUFFICIENT TO GUARANTEE THE TOTAL SAFETY.
Page 15: Before Working
BEFORE WORKING CONNECTION OF THE PUMP TO THE POWER PACK OR OTHER HYDRAULIC SOURCE Lay down the flexible hydraulic hoses avoiding the contact of the couplers with the mud or dirt. Put the tool on the ground limiting the contact with the dirt. Make sure that the tool is in perfect condition and its accessories are efficient and well installed.
Page 16: Use Of The Pump
Read and follow carefully the instructions described in the previous paragraphs: PUMPING OPERATIONS The WP 25 – SP 20 - SP 35 – SP 45 are a submersible pumps. They suck and pump when are submerged in water. the water is sucked from the suction hole in the bottom of the pumps body, or from the grille in the model WP 25.
Page 17 DURING PUMPING OPERATIONS IN STEEP AREAS OR WHERE THE ACCESS TO THE WATER IS DIFFICULT AND DANGEROUS, TRY TO KEEP A GOOD BALANCE AND FORESEE AN EASY EXTRACTION OF THE PUMP FROM THE WATER. OPERATIONS OF WATER APPROACHING IN STEEP AND SLIPPERY POINTS COULD CAUSE FALLS INTO THE WATER AND SERIOUS ACCIDENTS.
Page 18 The pressure and hydraulic flow are low and insufficient thus the pump cannot give adequate performance; The discharge hose makes a too sharp bend, in its length, chocking the water passage. PUMPING OPERATIONS AT LOW TEMPERATURES If the ambient temperature is near or below zero centrigades, it is advisable to run the oil in the hoses at idle for a few minutes until it is lukewarm at contact.
Page 19: Cleaning Of The Pump
advisable to pump clean waters for washing inside and outside the discharge hose and the pump itself. 7. Roll up the oil flexible hose in circles of about 60 cm of diameter, connecting the quick couplers at the extremities in the “head/tail” way. This operation will protect the oil couplers against impacts or scraping and will also help in keeping the hose well rolled up.
Page 20 CLEANING WITH CLOTHS OR PAPER  The tool can also be cleaned with a damp rag, using a brush with gasohol or an air gun for eliminating all traces of dirt and oil.  Clean in particular the recessed points and cavities and the connection surface of the quick couplers.
Page 21 Remind that a wrong or inadequate accessory can cause accidents and make the operations difficult. Accessories must be often inspected with care eliminating promptly those which are faulty or non maintainable, also for avoiding that other persons may incautiously use them again. INSPECTION AND MAINTENANCE OF THE OIL FLEXIBLE HOSE: ...
Page 22 THE FLEXIBLE HOSE ALWAYS REMAINS FULL OF OIL THAT, DEPENDING ON THE HOSE LENGTH, CAN HAVE A RELEVANT VOLUME. IF YOU CHANGE THE HYDRAULIC OIL IN THE POWER PACK, IT IS RECOMMENDED TO REPLACE ALSO THE OIL IN THE HOSES. THIS WILL ASSURE A FULL REPLACEMENT AND AVOID THE CONTAMINATION OF THE NEW OIL.
Page 23 ENVIRONMENT department of your municipality. Except for the liquids and materials of the previous list, the other components of the products manufactured by DOA are fabricated with recyclable materials that can be stored, disposed and scrapped without particular cautions. MATERIALS AND COMPONENTS USED BY DOA DO NOT CONTAIN ASBESTOS OR OTHER...
Page 24: General Information
IF YOU ARE NOT A TECHNICIAN AND IF PROFESSIONAL TOOLS AND EQUIPMENT ARE NOT AVAILABLE REPARATION OF PRODUCTS UNDER WARRANTY If the products are still under warranty, the repairs must be carried out only by DOA authorized service agents otherwise the warranty will be automatically nullified. GENERAL INFORMATION...
Page 25 If it is possible to disassemble only the part involved in the problem, memorizing their original position and the orientation of the seals. THE HYDRAULIC COMPONENTS OF DOA PRODUCTS ARE MANUFACTURED WITH FINE WORKMANSHIP AND STRICT TOLERANCES. BE CAREFUL NOT TO DEFORM AND DROP THEM. IT IS COMPULSORY TO KEEP EVERYTHING CLEAN.
Page 26 HYDRAULIC COMPONENTS INSPECTION: SHAFTS – GEARS – BEARINGS – BUSHINGS  Control that the state of the wear is standard.  Control that the sliding surfaces, in contact with the seals, are in good state and can guarantee a good sealing. Discard shafts or other sliding parts too worn. ...
Page 27: Before Testing
If working problems reoccur over and over, the cause or causes of malfunctioning are probably in the hydraulic circuit. For solving these problems, contact the nearest DOA service agent. The trouble shooting chart PROBLEM-CAUSE-SOLUTION at the end of this manual gives some general information about functioning problems linked with hydraulic circuits.
Page 28 5. Accelerate the power pack or other hydraulic source in order to supply the maximum flow of 34 l/min to the pump, simulating the maximum rotation rating. 6. If there are oil leaks, repair properly or contact the closest DOA assistance centre. If the tool works without problem, carry out the working test “in use”.
Page 29 PROBLEM / CAUSE / SOLUTION TRUBLE SHOOTING CHART The following table is a guide for finding and solving the most common working problems. The causes of malfunction often depend on inadequate values of the hydraulic circuit. The control of the PRESSURE-FLOW-BACK PRESSURE values should be carried out with proper instruments and oil at a temperature of about 40°...
Page 30 PROBLEM: POOR PERFORMANCES OF THE PUMP CAUSE SOLUTION Excessive or insufficient oil pressure and flow conditions Verify that correct hydraulic values reach the pump Excessive back pressure Reduce the back pressure value using oil (Excessive oil hoses length) hoses with a greater diameter or reducing the length The pump is submerged in sediments Lift the pump from sediments allowing the...
Page 31 PROBLEM: POOR PERFORMANCE OF THE PUMP WITH PREMATURE WEAR OF THE MOVING PARTS CAUSE SOLUTION many solid abrasive particles Reduce the quantity of solids in suspension in suspension in the water or fluid too thick the water Discharge hose with too small diameter Use the discharge hoses with internal diameter of at least 60 mm for WP 25 and SP 35 and 100 mm for SP 45...
Page 32: Warranty
WARRANTY All parts produced by DOA s.r.l. are guaranteed for a period of twelve months from the date of delivery to the final customer, against defect of: material, workmanship-assembly. Cost of labour and transports are not covered by warranty and should be paid by the customer.

This manual is also suitable for:

Wp 25 Sp 35 Sp 45