Manufactured under license of
Daewoo International Corporation
, Korea
www.daewoopowerproducts.com
USER'S MANUAL
DASDM
- SERIES
Deep well water pumps
Thank you for buying our water pumps. Please read the operation manual carefully before using.
WARNING
The reliable grounding must be conducted before using water pumps.The earth leakage protective
device as well as overload or over-current protective device must be installed on water pumps.
•
The electric pump is not allowed for dry running.
•
The nearby water surface shall not be contacted with water pumps during operation;
•
In order to prevent electrical shock, the power source shall be shut off during maintenance and
cleaning.
1. INTRODUCTION
The deep-well pump is a water lifting tool based on direct connection between electric machine and
water pump,which is suitable to fetch underground water from deep wells or rivers,reservoirs and
canals etc in some projects.Further, this product is mainly used for farmland irrigation as well as
human and animal drinking water in plateau mountain areas.More importantly,the deep-well pump
can be used for water supply and discharge in cities,factories,railways,mines and construction
sites.
2. USE CONDITION
2.1 Voltage fluctuating range shall be ±10% of rated values;
2.2 The electric machine’s submerged depth shall not be more than 80m.
2.3 The water temperature shall not be higher than +35.
2.4 The PH value of water is between 6.5 and 8.5.
2.5 The solid contents in the water shall not be larger than 0.25% with the maximum diameter not
over 2.3mm.
3. INSTALLATION USE AND NOTICE
3.1 Please check whether the inner diameter conforms to the minimum diameter of water pumps
before buying and installing.If it is a new well,the air compressor or old water pump shall be used to
clean sundries and soils.
After that, please check whether the water quality and temperature conform to use conditions. The
water pump can only be installed with the water inside the well up to standard.
3.2 Please check damage that may be caused in the transportation and storage process after
unpacking the pump.For example, whether the cable and plug etc are intact ; various joints are not
loosened without any leakage . If with any damage, please contact with professional personnel to
repair or replace it.
3.3 During installation,please fix the electric pump and then install earth leakage protective device
or over-hear or over-current protective device correctly. The electric pump must be connected to
ground reliably.
3.4 When the water pump reaches a certen length, the motor and the pump body need to be packed
separately. In case of a separate packing,first remove the filter screen and cable protection plate
from the pump body, then place the pump body on the motor to make the spindle head of the rotor
smoothly slide into the coupling, manually rotate the coupling to check if it can run normally, then
screw up the connecting bolt,and finally install the filter screen and cable protection plate.
3.5 Before use,thoroughly test the insulation resistance of the electronic pump's stator winding
(including outgoing cable) to the pump casing with a 500V megohmmeter,and the cold insulation
resistance should be not less than 100 M
Ω
.
3.6 The electric pump shall be connected to the power source for trial operation before entering into
water. The time shall not exceed 3 seconds. The cable lines of single-phase water pump shall be
connected according to the wiring diagram on the electric machine or control cabinet strictly with
correct colors. The wrong wiring will cause abnormal works or even damage the electric machine;
three-phase water pump can be connected without differentiating cable colors.
3.7 A power line can be added with rather distant power supply.Please select proper cable lines
according to table 1 to avoid too thin cable that will lead to abnormal operation.
3.8.5 Wrap the cable that is wrapped with the waterproof adhesive tape with the electrical insulating
tape.
3.8.6 Wrap the cable that is wrapped with the electrical insulating tape with the waterproof adhesive
tape. The waterproof adhesive tape should be 10mm longer than the electrical insulating tape at
both ends. Before the wrapping, the water proof tape should be stretched out 1-fold its length and
follow the normal use.
3.8.7 Immerge the junction of the cable into water for 12 hours. Test the insulation resistance of the
cable with the 500V megohmmeter. The cold insulation resistance should be not less than 50 M
Ω.
3.9 The delivery pipe shall be matched to the water outlet (the specification shall be selected based
on performance parameter table). For example, the iron wire or clamp can be used to connect with
soft delivery pipes; the screwed joint can be used for steel delivery pipes for further reliable connec-
tion. Further, the threading ropes are used at the handle in case of lifting in the water. The tied ropes
of hoisting electric pump must be firm and durable.The cable lines shall not be stretched but in a
natural loose state.
3.10 The cables are not allowed for impact and crushing or used as lifting ropes.Further,do not pull
the cables randomly during operation so as to avoid electric shock caused by cable damage.
3.11 The depth of electric pump in the water shall not be over 80m but 3m above the bottom.Fur-
ther,the electric pump shall not be sunk into soils .Meanwhile, the user shall prevent sundries to
block nets or impellers, because it will lead to abnormal works.Please check the water level during
works to avoid exposed or dry works,or else it will burn the electrical machine and other parts.
3.12 During usage,washing,swimming or animals are not allowed within working regions.The safety
warning label “ electric shock risk, no entry ” shall be set up on the site to prevent accidents.
3.13 The oil-filled electrical machine has been equipped with appropriate food machine oil at the
time of ex-factory.The users are not allowed to fill in any water or oil into the electrical machine
(except for maintenance).
3.14 The oil-filled electrical machine is equipped with food machine oil that may be leaked during
damage or breakdown.Under the use environments such as planting,cultivation or drinking water,-
food transportation and processing etc, the leaked food machine oil may cause certain damage to
plants and cultured animals or pollute drinking water or food.The user shall evaluate the use envi-
ronment as well as related consequence before selecting this product so as to confirm its proper
use.If necessary , please invite some related professional personnel .If with food machine oil leaka-
ge ,please stop using and deal with it properly.
3.15 The power source shall be cut off at the time of adjusting position or contacting with electric
pumps in case of any accidents.The electric pump shall not be lifted away from water surface after
shunting down power source so as to guarantee safety.
3.16 The electric pump belongs to specialized technology-based product. The unqualified repairman
shall not conduct any random disassembly. The sealing and insulation testing must be conducted
after laid-up and reassembly.
3.17 The maintenance shall be conducted on electric pumps after 3,000 hours normal operation.Va-
rious easily damaged parts such as mechanical seal,bearing and impeller etc must be replaced.The
air pressure test must be conducted on motor and oil chambers after laid-up or changing mechani-
cal seal. The test pressure is 0.4 Mpa.There shall be no leakage within five minutes.
3.18 The pump shall not be sunk into water for long-term nonuse. Instead, the pump shall be put in
the clear water for several minutes of operation so as to clean mud etc inside and outside the pump.
Further,the anti-rust oil shall be coated o the pump that shall be put in a dry and ventilated place.
The electric pump with rather long-term use shall be repainted or treated by anti-rust oil according
to its surface corrosion status.
4. FAILURE REASONS AND TROUBLESHOOTING METHOD
