Pump Unit; N 2 Gas Unit - Hitachi L-8900 Service Manual

1.3.2 Pump Unit

Pump head 1
Drain valve
Automatic purge valve
(Full specification version)
1.3.3 N gas unit
2
Regulator
Pump head 2
Discharge valve
Suction valve
Pump 2
Figure 2-5 Pump Unit
LED
Ammonia filter column
Drain valve
Pump head 1
Flow path filter
Automatic purge valve
(Full specification version)
N
N Gas Unit
2
1 - 7
Discharge valve
Suction valve
Pump 1
gas pressure
2
Switching button
(ANALY
Pump head 2
OPEN)