Chapter 5: Maintenance, Troubleshooting - Elpumps JPV 600 INOX Gebrauchsanweisung

Chapter 5: Maintenance, troubleshooting

IMPORTANT! Prior to the maintenance of the pump apparatus, disconnect the
apparatus from the mains voltage. It is done by removing the connection plug from
the socket.
The pump manufactured by the ELPUMPS Ltd is an apparatus of very simple structure. In case of installation performed with
due care, it will operate reliably.
However, it is reasonable to check the sealing (junk or Teflon) of the foot valve installed at the lower end of the suction
pipe at least every year. The integrity of the sealing is very important. The foot valve is a significant part of the water supply
system. Inspection and maintenance are necessary to perform more frequently in case of harder or sandy water. In case
the pump is operated in accordance with the instructions, it does not require any special maintenance. The bearings of the
motor are grease lubricated, which grease filling will ensure proper lubrication of the bearings for 1500 operating hours. In
case of risk of frost, the pump should be discharged by unscrewing the bleeder screw serving for this purpose, disassembled
from the well and stored in a frostless place. If the delivery capacity of the pump apparatus decreases, then it is supposedly
caused by the damage of the impeller or the sand deposited in the diffuser. If the impeller is cracked, broken or bobs on the
shaft, then the impeller should be replaced. If the pump is installed in a place where human supervision cannot be provided
(e.g. week-end garden), then the apparatus should be disconnected from the electrical mains when leaving. For storage
or transportation for a longer distance, it is reasonable to put the apparatus into a packing box which will protect it from
damages. We draw your attention that the water should be discharged from the pump prior to
storage or placing out of service for a longer period of time!
Attention: The hot water may cause injuries!
If there is no liquid flow through the pump (the delivery side is closed, or the suction side becomes leaky)
and the pump is operating for a longer time (>10 minutes), then the water found in it may get very warm.
Disconnect the machine from the mains, and let the pump and the water cool down. Do not switch on the
machine unless all the faults are eliminated.
The warming of the water may happen for the following reasons:
Unprofessional installation (suction side leakage, the pump may suck air)
•
Lack of water in the suction pipe (the water level of the well decreased, the foot valve does not reach minimum
•
30 cm below the water level, the suction depth exceeds the suction capacity of the pump)
• The delivery side is closed but the pump operates (The pump is operating continuously, but there is no liquid
flow through the pump)
LABOUR SAFETY REGULATIONS
Connect the connection plug to the mains in a dry place.
The apparatus may be connected only to the mains equipped with shock-proof protection as per the valid
•
standards.
• In case of abnormalities during operation, maintenance or placing out of service, remove the connection plug
from the socket.
Perform any maintenance, assembly or repair only on the apparatus disconnected from the mains, including
•
the replacement of the mains connection cable. These repairs may be done only by a technician.
• DO NOT use the pump in garden lakes or swimming pools when persons, living animals are staying in them!
GB
31