Koshin PBX Serie Manual De Uso página 8

3. Replacing the mechanical seals
This submersible pump uses a double mechanical seal.
During assembly, install a carbon mechanical seal on the motor side, and a silicon carbide
mechanical seal on the pump side.
Black
Carbon
Motor side
4. Impeller inspection
If foreign matter is stuck in the strainer or the impeller, the delivery volume will decrease and
it will also have a negative impact on the life time of the pump. Conduct an inspection by
carrying out the following procedure.
* Always remove the power plug whenever you conduct an inspection.
A
Tightening torque(N�m / lb�ft)
A 15 N�m
B 15 N�m
C 5 N�m
Wash the strainer and impeller with clean water.
Wash away any dirt around the motor shaft with water.
Reassemble the components by performing the disassembly procedure in reverse order.
Always replace any damaged or worn components.
5. Power cord replacement
If the power cord requires replacement due to wear or damage, contact your dealer to request
replacement.
6. (for PBX7-55022)
After stopping the operation, high electric voltage should remain in the capacitor under head
cover.
Maintenance or repairing works must be restricted by skilled staff.
Improper works may cause serious injury by strong electric shock. Please be careful for
handling.
Dark Gray
Silicon carbide
Pump side
B
C
Suction cover Impeller
11.06 lb�ft
11.06 lb�ft
3.68 lb�ft
Tightening torque (N • m)
15 N • m
A
15 N • m
B
5 N • m
C
8