11
8.2
Wire Sizes
For circuits which are far away
from the electrical service box, the wire size must
be increased in order to deliver ample voltage to
the motor.
To minimize power losses and to prevent motor
overheating and burnout, the use of wire sizes for
branch circuits or electrical extension cords
according to the following table is recommended:
Conductor
Length
AWG Number
230/460 Volt Lines
120 Volt Lines
0 – 50 Ft.
No. 14
No. 14
50 – 100 Ft.
No. 14
No. 12
Over 100 Ft.
No. 12
No. 8
Table 1
9.0
Controls
Refer to Figures 6 through 8:
A.
Belt Cover Lock Knobs
(A, Figure 6) –
Loosen and remove belt cover to change belt
position on the pulleys.
Disconnect mill from
power source before changing belt
position. Reinstall belt cover before
operating mill.
B.
Spindle Brake
(B, Figure 6) – Move in either
direction to stop spindle once power has been
turned off.
C.
Coarse Feed Handle
(C, Figure 6) – Rotate
counterclockwise to lower spindle. Return
spring will automatically retract spindle once
handle is released. Handle can be removed
when not in use.
D.
Quill Lock
(D, Figure 7) – Rotate handle
clockwise to lock quill in position; counter-
clockwise to release.
E.
Micrometer Adjusting Nut
(E, Figure 6) – For
setting specific spindle depth. Each graduation
on the nut represents 0.001” of depth, and
corresponds to the adjacent scale.
F.
Manual Fine Feed Handwheel
(F, Figure 6) –
Must engage fine feed (I, Figure 7) for
handwheel to function.
G.
Quill Stop
(G, Figure 6) – Used in conjunction
with micrometer adjusting nut for
predetermined depth.
H.
Reversing Switch
(H, Figure 7) – Switches
rotation of spindle. For 3-phase motor, there is
an additional low and high-speed option.
I.
Fine Feed Engagement
(I, Figure 7) – Turn
clockwise until tight. This engages the manual
fine feed; counterclockwise to release.
J.
Draw Bar
(J, Figure 7) – Located at top of
head. This is used to tighten an R-8 collet or
R-8 tool into the quill. Tighten draw bar enough
to hold tool securely during milling operations.
K.
Longitudinal Movement
(K, Figure 8) –
Handles located on opposite ends of table.
This controls the X-axis.
L.
Cross Movement
(L, Figure 8) – Handle
located directly in front of machine. This
controls the Y-axis.
M.
Knee Handle
(M, Figure 8) – Raises the table
up and down.
N.
Belt Tension Lever
(N, Figure 6) –
Slides
motor pulley to release tension on belt.
Figure 6: controls
Figure 7: controls
Содержание JVM-836
Страница 7: ...7 6 0 JVM 836 Installation Layout Figure 1...
Страница 17: ...17 13 1 1 JVM 836 Head Assembly Exploded View...
Страница 20: ...20 13 2 1 JVM 836 Upper Head Assembly Exploded View...
Страница 23: ...23 13 3 1 JVM 836 Leadscrew Assembly Exploded View...
Страница 25: ...25 13 4 1 JVM 836 Base Assembly Exploded View...
Страница 29: ...29 14 0 Electrical Connections for JVM 836...
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Страница 32: ...32 427 New Sanford Road LaVergne Tennessee 37086 Phone 800 274 6848 www jettools com...