DH Instruments FPG8601, Руководство по эксплуатации и обслуживанию

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FPG8601™/VLPC™ OPERATION AND MAINTENANCE MANUAL
© 2007 DH Instruments, a Fluke Company Page 114
Using gloves and minimizing contact with the
outside polished surface of the piston, carefully
place the piston on the top of the piston insertion
tool. The serial number etched on the inside of
the piston should be towards the top and right
side up. The serial number of the piston should
be adjacent to the serial number on the cylinder
(see Figure 62).
Slowly lift the cup and cylinder up until the piston
enters the cylinder and the cup begins to lift the
piston. Lift the cup, piston, and cylinder off of
the spindle.
The piston-cylinder is ready to be installed in the FPG platform.
7.6 INSTALLING THE PISTON-CYLINDER IN THE MOUNTING POST
Once the piston has been put into the cylinder, place the silicon O-ring carrier assembly on the upper
portion of the cylinder (lip up). The silicon O-ring is orange and more soft than the Viton O-ring, do
not confuse the two.
Place the Viton O-ring carrier inside the lower mounting post (lip down). The Viton O-ring is a
brownish color and is firm relative to the silicon O-ring.
Carefully slide the piston-cylinder assembly into the upper mounting post. Make sure that the serial
numbers on the piston-cylinder are aligned, and that the marked surfaces are oriented upwards (see
Figure 62).
Align the indexing hole of the cylinder with the hole on the indexing block.
Insert the cylinder retaining screw into the indexing block and the cylinder.
Position the holes on the piston so that they align with the gimbal ring and cylinder holes (where the
piston retaining pins will go).
Insert one piston retaining pin and thread it half way in.
Insert the remaining piston retaining pin so that it is tight.
Tighten the first piston retaining pin.