Yamato Scientific WS220 Water Purifiers - Manual (Page 24)

20
Maintenance Method
Replacement of Heater
1. WS200 (See Fig. 5 in Page 17)
1. Turn OFF the power switch.
2. Open the front door.
3. Open the manual cock, and drain water from the boiler.
According to Page 16 "Washing Distiller" remove the heater of WS200 along with the distiller (boiler
①), and remove the mounting plate ⑥, butterfly nut ⑦ and boiler cover ③ sequentially, and then
remove the heater.
2. WS220 (See Fig. 5 in Page 17 and Fig. 5-1 in Page 16)
1. Turn OFF the power switch.
2. Open the front door.
3. Open the manual cock, and drain water from the boiler.
4. Remove the locking screws (2 pcs) from the terminal block a fixed in the upper frame of the main
unit, and remove the terminal block cover b. Remove the screw d fixing the lead wire of the heater
by using Phillips screwdriver, and then remove the lead wire.
5. Pull off the metal press ⑥ fixing the distiller (boiler ①), outer tube of heater ③ and heater ⑤ by
loosening the knurled screws (3 pcs) ⑦.
6. Remove the cover fixed on the frame ceiling by removing the locking screws (2 pcs).
7. Heater can be unloaded by itself, not with distiller, from the hole on top of the frame.