[SM-206792-A/3]
―
19
―
OPERATION
５
2) 4KBseries
4KB111
When PB no pressurization (See the right figure)
P
→
A PB
B
→
R
When PB pressurization
P
→
B
A
→
R
A P B R
4KB121
When PA pressurization (See the right figure)
P
→
A
B
→
R PA PB
When PB pressurization
P
→
B
A
→
R
Even if air is cut off after press-
urization,it maintaing the chan-
ging by the self
A P B R
4KB131, 4KB141, 4KB151
When 4KA131 is PA,PB no pressurization (See the right figure)
P
・
A
・
B
・
R are closed.
When 4KA141 is PA,PB no pressurization
P (Closed.)
A
・
B
→
R PA PB
When 4KA151 is PA,PB no
pressurization
P
→
A
・
B
R (Closed.)
Refer to the function of 4KB121
concerning the caseof PA or PB
which is pressurization A P B R
