Chapter 5
SAFETY FEATURES
[81]
4.
If some deposits cannot be removed while the piston is installed, or if you want to soak
the piston in a solvent, use the 27 mm socket wrench with an extension to remove the
piston.
Inspect a piston that is removed from the cylinder housing by doing the following:
5.
Inspect the piston carefully, looking for deposits or obvious damage, and wipe it clean
with a clean, lint–free cloth.
6.
If deposits are found, clean the piston with a solvent and a nylon Scotchbrite
®
–type
scrub pad, or soak it in a cleaning solvent until deposits are removed.
7.
If deposits are not found, re–install the piston as described in the next section.
11.2.3.2
Re
–installing the Piston
1.
Wipe the piston clean with a clean, lint–free cloth. Coat the piston’s threads with an
anti– seize compound, then use the 27 mm socket wrench with an extension to re–
install it into the pump housing.
2.
To prepare to re–install the cylinder barrel into the cylinder housing, coat the tip of the
piston with a lubricating compound such as petroleum jelly or vacuum grease (or water,
if oils are not permitted). A small amount is sufficient to cut seal insertion friction.
3.
Operate the pump to move the piston to its Max Retract position to protect the piston
in preparation for re–installing the cylinder barrel.
11.2.4
Replacing the Cylinder Barrel
1.
Ensure that the pump is at its Max Retract position.
2.
If your pump system has an active wash ring, inspect the two wash ring external o–
rings for signs of nicks or deterioration. If necessary, replace them. Using a lubricant
like vacuum grease, coat the outside o–rings completely around their circumference.
This allows the o–rings to be inserted without binding.
3.
Holding the cylinder barrel assembly in one hand, carefully insert it straight onto the
piston, then into the cylinder housing. A firm pressure and some slight twisting action
may be necessary to get the cylinder barrel assembly fully seated in the cylinder
housing.
4.
Screw on and tighten the cylinder retaining ring nut with the face spanner wrench.
5.
Test the pump for proper operation and seal performance (no leaks).
11.3 Maintaining the Pump Cylinder
This section describes cylinder maintenance. It includes the following:
•
Replacing the Cam Rollers, Section 11.3.1
•
Re–Greasing the Ball Screw, Section 11.3.2
Содержание Ametek Quizix 5000 Series
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