2201Q4JE-MY-C9-N_2018.01.
Chapter 5 Maintenance and Inspection
Compound 2-stage Screw Compressor 4032**C
5.4 Disassembly and Inspection
5-20
5.4.4
Shaft Seal Block
4032**C models use the double balanced mechanical seal
assembly as the shaft seal.
According to the system applications and working fluids
( refrigerants), 4032**C applies an appropriate one from
appropriate three types of mechanical seal assemblies, i.e.,
BOD (balanced, O-ring, double) type, BBD (balanced,
bellows, double) type, and BBDE (balanced, bellows,
double, E* made) type.
These mechanical seals are compatible to each other.
For disassembly and assembly work of these mechanical
seals, a qualified trained personnel and special tools are
required. For details, contact us.
5.4.4.1
Disassembly
After removing the hexagon socket head cap screws [53]
and seal cover [51], disassemble in the order of the colored
number shown in Figure 5-7/5-8/5-9.
5.4.4.2
Inspection
Although it is instructed that the mechanical seal assembly
must be replaced after abnormality is found in the inspection,
only visually checking the sliding surface may be insufficient
in determining any abnormality. It is thus recommended to
always replace it with a new one, similarly to the case of
O-rings and gaskets, if the inspection is done in such a way.
Figure 5-8 BBD
Ⅱ
type Seal Figure 5-9 BBDE type Seal
Figure 5-7 BOD type Seal
