Chandler Engineering
5000 SERIES PUMP MANUAL
[80]
Order and Orientation of Aflas Seal Assembly Components and Outer Backup Ring.
In the following procedural steps, the numbers in parentheses correspond to the numbers next
to the component labels shown in Figure 11-3.
1.
On cylinder barrels with tapered seal areas, place the Hastelloy seal support (1) into the
cylinder barrel. On cylinder barrels with a
step
, rather than a taper after the seal in the
seal area, Hastelloy seal supports are not used. If the seal support does not sit flat
(perpendicular to the center axis of the barrel), the seal insertion plunger can be used
to lightly tap it into place.
2.
Place the PEEK ring (2) into the barrel with its flat side against the Hastelloy seal
support and its rounded side toward the front of the cylinder.
3.
Push the Aflas
®
seal (3) into the cylinder barrel as far as possible until it is up against
the PEEK backup ring. The Aflas high temperature seal is elastomeric so it can be
slightly compressed by hand.
4.
Place the Teflon
®
rear backup ring (4) into the barrel, with its rounded side against the
Aflas
®
seal.
5.
Place the flat PEEK rear support ring (5) against the Teflon
®
bottom backup ring.
6.
Place the large PEEK backup ring (6) against the rear support ring with the shoulder
(smaller diameter) towards the seal, against the Teflon
®
backup ring. This last backup
ring has a smaller shoulder than the standard, ambient temperature seal backup ring. If
you have both types of backup rings on your work table, do not confuse them.
7.
Gently force the seal insertion plunger through this set of seals and rings to align them.
8.
Coat the seal retaining nut threads with an anti–seize compound, then screw it into the
cylinder barrel to hold the seal back–up ring and seal in place. Tighten this nut using
the face spanner wrench. Use the 22 mm wrench to hold the cylinder barrel.
11.2.3
Inspecting, Removing, Cleaning, and Re
–Installing a Piston
11.2.3.1
Inspecting and Cleaning a Piston
A piston that is installed in a pump can be inspected by doing the following: (It is assumed that
the cylinder barrel has already been removed as described in Section 11.2.1)
1.
Operate the pump to move the piston to the Max Extend position.
2.
Inspect the piston carefully, looking for deposits or obvious damage, then wipe it clean
with a clean, lint–free cloth.
3.
If deposits are found, clean the piston with a solvent and a nylon (Scotchbrite
®
) type
scrub pad.
Содержание Ametek Quizix 5000 Series
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