Drain
plug
M P a
Air tight test: After the pump is disassembled
for the repair or replacement of any seal, the
bearers and the complete pump shall go
through water (air) pressure tests on the basis
of the maximum operating pressure and such
a test shall last for 3 minutes and there shall
be no phenomenon of leakage or sweating.
•
The recycling of the Electric Pump shall comply with the local laws and regulations concerning recycling.
1. When the ambient temperature is lower than
4
℃
, p l e a s e c o m p l e t e l y d r a i n t h e w a t e r
accumulated in the pump chamber to avoid frost-
cracking the pump body. Before starting the
Electric Pump again, inspect whether the pump
spindle rotates flexibly and fill the pump chamber
with water.
2. In the Electric Pump has not been used for a
long time, please disassemble the piping, drain
the water accumulated in the pump, clean the
main parts and components, carry out rust-proof
treatment, and keep it properly at a dry and well-
ventilated place.
NOTICE
1. Regularly inspect the insulation resistance between the enclosure and the winding of
the Electric Pump, which shall be no less than 5MΩ when the operating temperature is
nearly achieved, or otherwise usage shall not be allowed until the corresponding
measures are taken and the relevant requirements are met.
2. Prior to any repair or maintenance operation, please cut off the power supply and make
sure that the motor will not be powered on for operation due to a casual operation.
WARNING
After the 2000-hour normal usage of the Electric Pump, the Electric Pump shall be delivered
to a qualified repair station for maintenance and repair as per the steps below: dismantle the
pump and inspect various quick-wear parts such as the bearing, mechanical seal, impeller,
and bottom valve. Please immediately replace those damaged ones
Bearing
Mechanical seal
Impeller
Bottom valve
VIII. Maintenance
Bearing
Mechanical seal
Impeller
NOTICE
