Nordson ProBlue Flex User Manual

SP Pump Diagnostics and Repair
B-5
Part 1128350_02
E 2020 Nordson Corporation
Problem Possible Cause Corrective Action
5. Pump leaks air from the
exhaust ports
Missing or damaged O-rings on valve
assembly
Remove the valve assembly and replace
the O-rings.
Loose air piston assembly
Inspect and repair the air piston
assembly.
Damagedormissingairpistoncups
6. Pump leaks air from
between the air cylinder
and cylinder head
Missing or damaged O-ring Re place the O-ring.
Loose cylinder screws Tighten the screws to 25 – 31 in-lbs.
7. Pump leaks air from
between the air cylinder
and pump frame
Missing or damaged O-ring Re place the O-ring.
Loose cylinder screws Tighten the screws to 25 – 31 inch lbs.
8. Pump leaks air from
between the piston shaft
and the underside of the
air motor
Air motor piston shaft seal missing,
worn, or damaged
Replace the air motor piston shaft seal.
9. Pump leaks air from
between the air cylinder
and the actuator
assembly
Missing or damaged O-rings Replace the O-rings.
Loose screws holding the actuator as-
sembly to the air cylinder
Tighten the screws.

Nordson ProBlue Flex Specifications

General

Brand	Nordson
Model	ProBlue Flex
Category	Melting Machines
Language	English