Flowserve PLUS 5Q - Manual (Page 13)

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NORDSTROM HYPREGUN-PLUS 5Q
Flow Control
Nordstrom Valves
Flow Control
Nordstrom Valves
Care and Maintenance
Suggested
Hypregun-Plus 5Q Care
The following suggestions will ensure efficient and continued
operation of the Hypregun-Plus 5Q.
1. Avoid damage to the thin walled cylinder surrounding the
piston of the air motor. Imperfections in this cylinder will
reduce the effectiveness of the gun and shorten its life.
2. Handle the Hypregun-Plus 5Q with care. Prevent any bending
or denting of the pistons or operating parts.
3. Use a clean, dry air source. If air is wet, use a filter on the air
line to remove the water. Install an oiler in the air supply line
using light oil in summer and methanol in the winter.
4. Do not use over 125 psi (8.6 bar) air supply pressure. The
gun will work best between 100 psi (6.9 bar) and 125 psi
(8.6 bar).
5. Always use the can shield and five-quart (4.7 litre) cans that
are crimped and welded. The vertical welded seam on the
can should be placed opposite the opening on the shield. If
the opening on the shield is placed over the seam in the can,
the can seam may separate from the pressure created by the
piston.
6. CAUTION - When inserting a new five-quart (4. litre)
can of sealant, be extremely careful. Keep fingers
clear as the follower plate descends into the sealant
container.
7. Be sure to bleed or vent the Hypregun-Plus 5Q before using.
The more the curvature of the mounded sealant matches the
curvature of the follower plate, the less air will be entrapped
when changing cans. The relief valve (64, Section B-B) should
be opened until a steady stream of sealant is obtained. If the
pressure gauge needle continues to bounce, remove the valve
screw (63, Figure 1) to free entrapped air in that area and, in
rare occasions, remove the pressure gauge to be sure there
is no air entrapped in the connection to it. Improper bleeding
is indicated by a very bouncy action of the pressure gauge
needle at relatively low pressures. If this continues, additional
bleeding is necessary.
8. Store the Hypregun-Plus 5Q and sealant in a reasonably warm
place so that not only the gun but the sealant is at an operable
temperature.
Repair Reassembly
There are two places in the reassembly of the Hypregun-Plus
5Q pumping mechanism where the parts should not be rigidly
assembled:
1. When the piston and cylinder (42, Section C-C) are attached
to the air motor piston rod (37, Section C-C), they should only
be hand tight (not wrench tight), the holes aligned, and the
roll pin installed to secure in place.
2. In assembling the primer rod and foot valve assembly (45,
Section C-C) into the piston, it should be pinned in place
with roll pin (38, Section C-C) before it becomes tight. There
should be some “wobble” evident for self-alignment of the
parts. The primer rod and foot valve assembly (45, Section
C-C) and valve seat (47, Section C-C) should be replaced as
a single unit.
Factory Repair Service
Factory repair service is available from Flowserve Nordstrom
Valves. Consult your Authorized Distributor or Nordstrom
Customer Service for more details.