Blohm + Voss Oil Tools 9PU-7200, Technical Documentation Manual

Page: 21 / 37

OP
ER
AT
ION
S
21
Is HPU Compensator
Valve closed?
Close the
compensator valve. Is
the pressure required
present?
With HPU Lines
capped and HPU
running alone, is pressure
required Present at
HPU?
Is the HPU
connected to any
equipment with open
centered valving?
Isolate hpu from the rest
of the system and run
independently.
Disconnect HPU from any
open centered equipment
and cap lines.
The problem is
downstream of HPU.
Pressure is being lost
through equipment.
Suction strainers inside tank should be
replaced prior to any pump / compensator
service. Other filters should be checked for
serviceability.
It is possible that the pump is worn out, or
trash is clogging one or more ports in the
compensator. Please contact Blohm + Voss
service for further Instructions.
Yes
Yes
Yes
Yes
START
HPU powers up, but will not build pressure.
No
No
No
No
Troubleshooting
Continue Operation.