Mitsubishi Electric PURY-M200YNW-A1 Service Handbook page 426

[8-15 Main-HBC Maintenance Instructions ]
Operation procedures
22) Check: Turn the nylon lock nut (part 20) of the water inlet with inner
hexagonal sleeve S13 counterclockwise seen from the motor impel-
ler end to check for free rotation without blockage.
23) Paste the rotation sign on the center of the motor fan cover.
The water pump installation is completed.
Replace the O-RING on the JOINT along with the mechanical seal.
BS_08_L
Illustrations
Rotation sign label
159
chapter 8 -