ShinMaywa NORUS CR series, Instruction Manual, Page: 16 / 24

16
<Tools>
1/5HP 1/3HP
A hexagon bar wrench of nominal size 4
1/2HP 1HP
A hexagon bar wrench of nominal size 5
(0.4, 0.75 kW)
WARNING
Before inspection or repair, turn off the power supply
even if the pump is not in operation. The pump is equipped
with a built-in motor protector which automatically stops/starts
the pump and this may result in injury during inspection or
repair.
When the pump is not being used, or in the case of a blackout,
turn the power supply off.
A) Unscrew the bolts at the bottom of the pump and remove the
pump casing.
(Tool: A Phillips screwdriver)
B) After the impeller is exposed, check whether it is jammed or worn out. If the impeller is jammed, remove
any foreign matter. If the impeller is severely worn out, replace it with a new one. To replace the impeller,
loosen the hexagonal socket bolt in the center of the impeller, as shown in the figure below.
OFF
ON
CR/CRS/CRC Type
CRXP Type
<Tools>
Philips Screw Driver
Socket Wrench
Pump
Impeller
Washer
Nut
Wear Ring
Screw