Instruction Manual
DPA-16 Air Hyd. Power Unit - V1.0
Page 8 of 10
7.0
Troubleshooting
Problem
Cause
Solution
Application does not extend,
move or respond to
pressurised fluid
Overload condition
•
Remedy overload condition
Loose couplers
•
Tighten couplers
Faulty couplers
•
Replace couplers
Malfunctioning power unit
•
Contact a Durapac authorised
service centre
•
Repair or replace as
necessary
Inadequate air supply
•
Ensure air source can
dedicate 7.8 cfm @ 4-12
bar/60-175 psi
Application responds to
pressurised fluid, but system
does not maintain pressure
Overload condition
•
Remedy overload condition
Malfunctioning power unit or
valve
•
Contact a Durapac authorised
service centre
•
Repair or replace as
necessary
Leaking
application/connection
•
Replace
application/connection
Application responds slower
than normal
Loose connection or coupler
•
Tighten connection or
coupler
Restricted hydraulic line or
fitting
•
Clean and replace if damaged
Leaking
application/connection
•
Replace
application/connection
Application does not return
fluid to power unit (i.e.
cylinder will not retract)
Malfunctioning coupler/
damaged application
•
Secure load by other means
•
Depressurise power unit and
hose
•
Remove coupler and/or
application
•
Repair or replace as
necessary
Application does not fully
extend (cylinder or spreader)
Overfilled reservoir
•
Secure load by other means
•
Depressurise power unit and
hose
•
Remove application
•
Drain fluid to proper level
Low fluid level in power unit
•
Secure load by other means
•
Depressurise power unit and
hose
•
Remove application
•
Fill fluid to proper level
Poor performance
Low fluid level in power unit
•
Ensure proper fluid level
