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6.2.9 Checking the Coupling and Spider
The spider of the coupling that connects the pump body and the motor is made of rubber. Replace
it if the spider is damaged. Please contact the closest Service center.
As a guideline for inspection, set a short period of once / six months or once / start / stop 7,200
cycles, and consider reviewing the inspection period according to the operation of the actual
machine. We also recommend replacement once a year. For applications that start / stop dozens
of times a day, we recommend starting with an inverter instead of direct insertion.
To replace the coupling spider, proceed as follows.
(1) Stop the pump and turn OFF the Power Supply. Disconnect the power cable of the motor.
(2) To remove the bolts form the motor. And remove the motor from the pump.
(3) Now you can check the spider of the coupling. Replace the spider with a new one.
Put the new coupling spider in one of the coupling.
Meet the ratchet of both couplings and mount the motor in the pump.
(4) Put the bolts removed in the item (2) above.
MODEL Bolt
Q’ty
Recommended
tightening torque
[N･m]
PMB100D M6 x 14 4
5～10
PMB300D M8 x 22 4
15～20
PMB600D M8 x 22 4
15～20
PMB1200D M10 x 30 4
25～30
PMB2400D M12 x 35 4
35～45
(5) Execute the wiring.
WARNING
When removing and installing the motor for replacement of the
coupling spider and for overhaul, lift and support the motor by a
crane, etc. Use sling belt or eyebolt. To ensure the work safety.
Be sure to turn OFF the Power Supply when putting on and taking
out the Motor.
Only the technically entitled person should be in charge of
operating the machine such as crane.
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