Delta DC-580 20" PLANER 22-450 - Manual (Page 17)

Fig. 33
Fig. 34
Fig. 35
CHECKING, RESETTING
AND REPLACING KNIVES
When checking, resetting and replacing knives, proceed
as follows:
1. DISCONNECT MACHINE FROM
POWER SOURCE.
2. Remove locking screw (E) Fig. 4, and raise top cover
(A) Fig. 33, to expose cutterhead (B).
3. Carefully place knife setting gage (C) Figs. 34 and 35,
so the gage is positioned on the radiused section of
cutterhead (B). When set correctly, knife (D) Figs. 34 and
35, should just contact the bottom of inset section (E) Fig.
35 of knife setting gage (C) which is set at .070". Check the
remaining knives in the same manner.
4. If an adjustment to one or all three knives is necessary,
slightly loosen the ten locking screws, one of which is
shown at (F) Fig 34 and Fig. 35, just enough to relieve stress
in cutterhead (B) and not disturb the knife setting.
5. With knife setting gage (C) Figs. 34 and 35 still in place
on the cutterhead, continue to adjust the knife that must
be reset by turning the ten knife locking screws
CLOCKWISE until knife locking bar (G) becomes loose.
Lifter springs (not shown) located under the knife will
automatically raise the knife until it comes in contact with
the gage (C). Then snug up the knife locking bar (G) Fig. 34
and Fig. 35, by turning the ten screws (F)
COUNTERCLOCKWISE. IMPORTANT: AT THIS TIME,
ONLY TIGHTEN THE KNIFE LOCKING BAR (G) JUST
ENOUGH TO HOLD THE KNIFE (D) IN POSITION
INSIDE THE CUTTERHEAD SLOT.
6. If other knives need adjustment, repeat STEP 5.
7. After all the knives are positioned in the cutterhead
with the knife locking screws snug, turn each of the ten
locking screws (F) Fig. 34, COUNTERCLOCKWISE UNTIL
THE KNIVES ARE SECURE IN THE CUTTERHEAD.
NOTE: When tightening the knife locking screws (F),
tighten the end screws first, then proceed inward
toward the center of the cutterhead.
IF THE KNIVES ARE TO BE REMOVED
FOR SHARPENING OR REPLACEMENT, EXTREME CARE
SHOULD BE TAKEN AS THE KNIVES ARE VERY SHARP.
TO REMOVE THE KNIVES, WEAR GLOVES AND
PROCEED AS FOLLOWS:
8. DISCONNECT MACHINE FROM
POWER SOURCE.
9. Carefully place knife setting gage (C) Fig. 34, so it is
positioned on the radiused section of the cutterhead (B)
Fig. 35.
10. Loosen knife locking bar (G) Figs. 34 and 35, by
turning ten knife locking screws, one of which is shown at
(F) CLOCKWISE and carefully remove locking bar (G),
knife (D), and springs (not shown) which are located under
the knife, from the cutterhead. Remove the remaining
knives in the same manner.
11. Thoroughly clean the knife slots, locking bars, and
locking screws. Check the screws; if the threads appear
worn or stripped, or if the heads are damaged, replace
them.
12. Carefully replace the springs (not shown), knives (D)
Fig. 35, and locking bars (G) into the three slots in the
cutterhead (B). IMPORTANT: WHEN REPLACING
LOCKING BARS (G) FIG. 35, AGAINST KNIVES (D) AS
SHOWN IN THE CROSS SECTIONAL ILLUSTRATION,
MAKE CERTAIN LOCKING BARS (G) ARE INSTALLED
AS SHOWN, WITH LOCKING SCREWS (F) HOLDING
KNIVES (D) PROPERLY INSIDE THE CUTTERHEAD
SLOTS. TURN ALL KNIFE LOCKING SCREWS,
O N E
O F W H I C H I S S H O W N A T ( F ) ,
COUNTERCLOCK-WISE, JUST ENOUGH TO HOLD
THE KNIVES IN THE CUTTERHEAD.
13. Adjust the knives as explained in STEPS 3 through 7.
14. Replace top cover on the machine.
A
B
F
C
B
D
G
CROSS-SECTIONAL
VIEW OF
CUTTERHEAD
C
.070" gap
B
F
G
E
D
17