Flowserve Nordstrom Hypregun-Plus 5G Pneumatic Valve Sealant Injector - Manual (Page 17)

17
Nordstrom Valves Hypregun - Plus 5G FCD NVENIM2004-00-AQ 10/14
flowserve.com
Troubleshooting Guide
These troubleshooting tips are provided as a means of assisting the consumer in overcoming difficulties encountered with prolonged use of a
Hypregun-Plus 5G. Part numbers in parentheses denote illustration numbers as listed on pages 5 and 6 of this brochure.
a
WARNING: Never attempt to repair a Hypregun-Plus 5G without first disconnecting the air supply.
Problem Cause Solution
The air motor (1)
is operating but
sealant is not being
dispensed.
Air is trapped within the down tube assembly.
Bleed the system as described in sections 7 through 9 on page
12 of this manual.
Loose down tube assembly. Tighten as needed.
Primer rod and foot valve assembly (45) is worn
or pitted.
Rebuild the assembly using down tube kit 1900016.
The sealant can
is difficult to
remove from the
follower.
Dimensional tolerances of the can and follower are
restricting can movement
Remove air supply and attach to nipple (57, Section B-B). Slowly open
the relief valve (64) 1/4 turn to allow air to enter the can. The can will be
forced from the follower.
The air motor (1)
does not operate
when the throttle
valve (3) is opened.
The movement of internal parts of the air motor
is restricted due to debris being entrapped in the
motor.
Replace the air motor.
The thin wall of the air motor cyclinder has been
dented thus restricting movement of internal parts. Replace the air motor.
The nylon air tube (5) is cracked
Replace the nylon air tube.
Air supply pressure to gun is too low. Check output pressure of the air supply
Air passages to air motor are blocked. Clean air passages of obstructions.
Obstruction in down tube assembly.
Disassemble the down tube assembly (36), clean, and
reassemble.
Down tube assembly not assembled to proper
length.
Disassemble down tube assembly and assemble to proper length
by aligning roll pins (38 - two locations).
Metal air tube (91) on the air motor is crushed. Remove the metal air tube assembly and replace.
The air motor will
operate only 1/2
stroke.
The air motor slide valve is worn or damaged. Install new air motor repair kit 47510.
Obstruction in down tube assembly (36). Disassemble the down tube assembly, clean and reassemble
The follower
movement into the
can is restricted.
Can too small. Use Nordstrom five-gallon (18.9 liter) can with welded seam.
Follower wiper (35) is too large. Install new wiper.
As follower enters
can, sealant
bypasses the
follower O-ring.
Follower wiper (35) is too small. Install new wiper.
Can is too large or bent. Use Nordstrom five-gallon (18.9 litre) can with welded seam.
Can swells or distorts. Install can shield (72).
The follower
(34) will not go
completely to the
bottom of the can.
The bottom of the cylinders (19) contain water.
Remove air pressure from the unit, unscrew the cylinders and
drain the water. Dry the cylinders and check for oxidation before
reassembly.