Instruction Manual
HRP Series Roll Frame Press - V1.1
www.durapac.com
Page 11 of 11
Problem
Cause
Solution
Air-locked pump
Prime pump as described in
6.2 – Bleeding Air from the
System in the Maintenance
Section
Pump not operating
Check the Operation Section
for the pump’s operating
instructions
Load is above the capacity of the
system
Use the correct equipment
Cylinder extends only partially
Low or no hydraulic fluid in pump
reservoir
Fill and bleed the system as
described in the Maintenance
Section
Load is above the capacity of the
system
Use the correct equipment
Sticking or binding cylinder
Check for dirt or leaks
Check for bent, misaligned,
worn parts or defective
packings
Cylinder moves slower than
normal
Loose couplers
Tighten couplers
Restricted hydraulic line or fitting
Clean and replace if damaged
Pump not operating correctly
Check the Operation Section
for the pump’s operation
instructions
Leaking cylinder seals
Replace worn seals
Check for excessive
contamination or wear
Replace contaminated fluid as
necessary
