Daikin ZHA7MSG Инструкция по эксплуатации IV ver онлайн [15/58] 527071

Overhaul Instructions Si50-402

14 Semi-Hermetic Single Screw Compressor Version IV

(3) Removing the gate rotor bearing retainer plate

While holding the gate rotor with hand, loosen the bolts. Be careful not to lose gate rotor

adjusting shims (1) mounted between the gate rotor shaft and retainer plate.

Be sure to use the original combination of gate rotor, lower bearing holder, gate rotor

adjusting shims and gate rotor adjusting shims (2). (Do not exchange parts between the

upper and lower sets).

Fig. 4-7 Removing gate rotor bearing retainer plate

(4) Removing the lower bearing holder (upward and downward units)

 In the guide bolt hole, thread the bolt that was used for the lower bearing holder mounting

and lift the lower bearing holder from the casing.

 Remove the shims inserted between the lower bearing holder and casing. (Do not lose

the shims.)

 The lower bearing holder and the casing are sealed with an O-ring. Therefore, the lower

bearing holder is hard to be removed from the casing. To separate the lower bearing

holder from the casing, insert two flat-blade screwdrivers or the like under the flanged

part symmetrically as shown in Fig. 4-8 and then slowly twist the screwdrivers, or tighten

the burst bolt with pad metal put to the burst bolt.

Fig. 4-8 Removing lower bearing holder

 In the upward gate rotor, the lower bearing holder falls off when the O-ring is separated.

Therefore, mount long bolts in the casing bolt holes and place a hand below the gate

rotor to support it during removal operation.