Packing Replacement Instructions
Caution: Bleed all pressure from the compressor and
piping, and purge (if necessary), before starting to install
new piston rod packing. After repair, the unit should be
pressure tested and checked for leaks at all joints and
gasket surfaces. When the compressor is being used
with toxic, dangerous, flammable or explosive gases,
this pressure and leak testing should be done with air or
a dry, inert gas such as nitrogen.
For simplicity, heads, pistons, and inspection plates are
not shown. For specific construction details and actual
part numbers, consult the appendix in the back of this
IOM manual. Use instructions below that apply to the
MODEL and SERIAL NUMBER of your compressor. Be
careful to arrange packing sets in the proper order.
Cleanliness:
Prior to installation, inspect all parts for cleanliness
and visible defects. There should be absolutely no
scratches, dings, porosity, or foreign materials on
bearing surfaces, sealing surfaces, and packing
cartridge inner and outer diameters.
Workmanship:
Your Corken compressor is a precision piece of equipment
with very close tolerances. Treat it as such. Never beat
on it to get parts in or out.
Model 91 Compressor
(Refer to Appendix E for packing assembly details)
Disassembly of Packing
1. Depressurize and open the compressor.
2. Remove head, piston, cylinder, inspection plate and
crosshead guide.
3. Loosen adjusting screw and remove retainer ring,
washers, packing spring and old packing from
crosshead guide.
Assembly of Packing
1. Clean, then lightly oil, packing area inside the
crosshead guide.
2. Slightly thread in the adjusting screw into the
crosshead guide.
3. Install packing rings including male and female
packing rings one at a time as shown in Appendix E.
Push in each one completely before adding the next
ring. The quantity of packing rings required will vary
due to tolerances; a good rule of thumb is to put in as
many as are removed.
4. Insert thin packing box washer, packing spring and
thicker washer into the top of the crosshead guide.
5. Install locking device (part number 1192) into adjusting
screw and cut, leaving 1/8" exposed. Tighten adjusting
screw until plastic locking device engages the first
thread in the crosshead guide.
6. Oil piston rod and install the packing installation cone
(part number 4005) over the threaded end of the
piston rod.
7. Carefully slip the crosshead guide over the piston rod;
otherwise, you may damage the lips of the packing rings.
8. Remove packing installation cone.
9. Install the crosshead guide O-ring, cylinder, piston
and head.
Model 291 Compressor (serial number SS55685
and later)
Model 491 Compressor (serial number XC30633
and later)
(Refer to Appendix E for packing assembly details)
Disassembly of Packing
1. Depressurize and open the compressor.
2. Remove head, pistons and cylinder.
3. Remove cartridge holddown screw with special
wrench supplied with the compressor and packing
box cartridge.
4. Loosen adjusting screw and remove retainer ring,
washers, packing spring and old packing from
packing box cartridge.
Assembly of Packing
1. Clean, and then lightly oil, packing area inside packing
box cartridge.
2. Slightly thread in adjusting screw.
3. Install packing rings including male and female
packing rings, one at a time, as shown in Appendix E.
Push in each one completely before adding the next
ring. The quantity of packing rings required will vary
due to tolerances; a good rule of thumb is to put in as
many as are removed.
4. Insert thin packing box washer, packing spring and
thicker washer.
5. Push down on washer and insert retainer ring.
6. Tighten adjusting screw until plastic locking device
(part number 1192) engages the first thread in the
packing box cartridge.
7. Lubricate piston rod and replace cartridge O-ring.
23
To Next Page
Loading...
