Cleveland APD, Инструкция по установке, эксплуатации и обслуживанию, Страница: 20 / 26

(1) packing ring
Split follower
Tension nuts
PACKING GLANDS / STUFFING BOX
"High Pressure - 30-100 PSI"
"Low Pressure - 0-30 PSI"
Cleveland Mixer stuffing box seals are supplied as either "high pressure" with 7 packing rings (the thickness of the
packing is dictated by the shaft diameter) or "low pressure" with a single packing ring. High pressure stuffing box seals
are typically supplied with mixers that are side wall mounted or mounted on a sealed tank with pressure over 30 PSI but
less than 100 PSI. Low pressure stuffing box seals are typically supplied with mixers that are top mounted on sealed tanks
with pressure of less than 30 PSI.
<PARA >1. Packing should always be installed as individual rings and not spiraled around the shaft.
2. Lubricate each ring generously with grease (food grade grease can be used with food grade packing in sanitary
applications).
3. High pressure stuffing boxes have four packing rings, a lantern ring and then three packing rings on top. Once the
gland is packed in that order, slide the split follower down to sit on top of the packing and snug the four nuts just so the
split follower is touching the packing. The lower pressure is the same procedure but with the follower and one packing
ring.
4. Pump the gland full of grease using the grease fitting on the side of the gland. You can pump grease into the gland
until you see it push through the top. Once the gland is completely filled with grease, tighten the split follower nuts
evenly until the gland is sealing properly. The seal is not created by tension from tightening the nuts, the seal is created
by the grease int he packing against the mixer shaft. Over tightening the nuts and pushing the follower down on the
packing can damage the mixer shaft.
5. As the mixer runs and the gland wears in, you'll most likely need to add addtional grease and possibly tighten down
on the split follower nuts slowly and evenly in about 1/2 turn increments.
6. The gland will need to be greased as regularly as needed to keep the seal. This can vary based on the contents of
the tank, the shaft RPM and amount of pressure on the seal.
DRIVE END OF MIXER
7. Remember to replace the
pedestal guards and secure
the guards back onto the
pedestal once the packing
gland is set up. You can add
extensions to the grease
fittings through the guards for
ease of access for continued
lubrication.
RXT & APD AGITATOR MANUAL_09-17-15_JN
PAGE 17
Tension nuts w/ flat washers
Split follower
(3) Upper packing rings
Lantern ring
(4) Lower packing rings
Pedestal
Stub shaft or mixer shaft
Grease fitting