DoAll C-916 - Coolant System & Application; Powered Chip Brush; Chip Removal

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HEAD ADJUSTMENT (Continued)
NOTE: Once a desired cutting rate has been
established,. it is no longer necessary to turn
cylinder adjust screw "off" while raising the
head.
COOLANT SYSTEM & APPLICATION
(1) The coolant pump and reservoir are located
below the right wheel door. A Coolant
"on-off" selector switch is located on the
electrical cabinet.
(2) Reservoir capacity is 5 gallons (19 liters). The
pump must be sufficiently submerged in
coolant to operate correctly .
(3) Coolant is supplied to the cutting area through
the left saw guide inserts. Adjust valve on the
left saw guide arm so coolant completely
covers both saw band sides .
NOTE: Refer to lubrication Chart for coolant
specifications.
(4) Used coolant is returned to the reservoir
through a removeabie screened outlet in
machine frame below the drive wheel.
Additional screening by pump within the
reservoir removes chip particles before
coolant is recirculated to the cutting area.
See Fig. 18.
CONTROL
VALVE
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FIG. 18. COOLANT SYSTEM- FRONT VIEW.
Coolant Selection
COOLANT
PUMP
Proper c utting f luid usage is essential to obtain·
ing full advantage of saw blades used with this
machine . Remember the following:
(1) Excessive heat build-up is the main tooth
failure cause during band machining . Cutting
fluid helps prolong tool life and/or high cutting
rates by reducing heat generated during
sawing procedures. It has both lubricating and
coolant properties.
(2) DoALL has developed cutting fluids specially
for band sawing. Those particularly recom-
mended for use (depending on speed and feed
rates) are No. 40, No . 360, and HD -600.
(3) Coolant choice will depend upon factors such
as: (a) Kind of metal to be cut; (b) Its machin-
ability rating; (c) Band Speed to be used;
(d) Overall sawing operation.
(4) Using 1 or several coolant varieties may
provide maximum sawing efficiency and
economy.
NOTE: literature describing all coolant varieties is
available from DoALL Industrial Supply
Centers.
POWERED CHIP BRUSH
(1) This rotary brush cleans chips from band teeth
gullets and is driven by the band drive wheel.
(2) The brush is located behind the right wheel
door and attaches to a bracket welded to
machine frame .
(3) Loosen bracket screws and adjust brush as
metal bristles wear. See Fig. 19.
HEX NUT
BRUSH
ADAPTER
FIG. 19. POWERED CHIP BRUSH - FRONT CROSS-SECTION
VIEW.
CHIP REMOVAL
(1) During the sawing process , chips will
accumulate below the powered chip brush .
These should be removed as often as possible.
(2) In addition, the operator should check often
for chip accumulations around such machine
areas as: saw guides , table top , wheels, vises,
head lift assembly, etc . These may affect
machine performance and sawing accuracy if
not removed .
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