Powerex SED1007, Руководство пользователя

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17
Scroll Enclosure Air Compressors
Scheduled Maintenance
(Continued)
REPLACE TIP SEAL
1. Remove intake hose
2. Remove the discharge hose.
3. Remove nuts and bolts that secure fi xed scroll.
4. Remove the fi xed scroll housing.
5. Take out the old tip seal from the orbiting scroll housing
and fi xed scroll housing, see Figure 11.
6. Remove the old dust seals from fi xed scroll, see Figure 12.
Install the new tip seals and dust seals in the stationary and
orbiting scroll housings in the following manner:
NOTE: Tips seals for Fixed Scroll and Orbit Scroll have opposing
seal cut angels (See NOTE and explanatory diagram below).
Insert tip seal so that the lip of tip seal is on the bottom of
seal groove and inner side of involute and the direction of
lip faces the center of involute (curving spiral). See Figure 12.
This is to be done for both FS and OS sets.
Use caution not to tear or distort lip.
1. Insert new HP tip seal from the center section for OS or
Orbit Scroll so that there will be no clearance at the tip
(start) section (See Figure 11 and 12).
2. Insert so that new LP tip seal will contact closely with HP
tip seal inside Scroll Groove.
Insert approxi-mately half of
the LP tip seal and remove the
tip seal to confi rm that a notch in the tip seal has been created.
This will prevent movement during installation (See Figure 8).
3. Repeat the same procedure for FS or Fixed Scroll tip seal
set, remove both the dust seal and backup tube located
on outermost side FS set.
4. Insert new backup tube in the FS Scroll in the 6 o’ clock
position (See Figure 13).
Figure 11
Lip Direction
Enter
Side
Lip Surface
(Inside)
Lip Side
(Grooved bottom)
Figure 12
Model Size Torque
Pulley bolt M8 175
Housing Nut
(See Figure 1)
M10 265
Chart 17 - Bolt Torque (In. - lbs.)
Machined to avoid
movement during
installation
Figure 13
Facing Left Facing Right
Lip
(Bottom Side)
Lip
(Inside)
Fixed Scroll Orbit Scroll
NOTE: In order to distinguish between the tip seal for Fixed Scroll and the tip seal for Orbit Scroll place the tip seal as shown
below then view from the arrow direction and refer to the fi gure on the right.