Pg 5
10HP - 20HP Scroll Enclosure Air Compressors
SCHEDULED MAINTENANCE (Cont’d)
REPLACE TIP SEAL
1. Remove intake hose
2. Remove the discharge hose.
3. Remove nuts and bolts that secure fixed scroll.
4. Remove the fixed scroll housing.
5. Take out the old tip seal from the orbiting scroll housing
and fixed scroll housing, see Figure 8.
6. Remove the old dust seals from fixed scroll, see Figure 9.
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 angles (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 9.
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 8 and 9).
2. Insert so that new LP tip seal will contact closely with HP
tip seal inside Scroll Groove.
Insert approximately half of
the LP tip seal and remove the tip seal to confirm 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 the backup tube located on
outermost side FS set.
4. Insert new backup tube in FS in the 6 o’clock position (See
figure 10).
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 figure on the right.
