The electrical system has prewired safety
switches on certain covers and guards to pre-
vent the machine from operating when these
covers or guards are removed. The oil mist lu-
bricator also has switches to prevent the ma-
chine from operating if oil level or air supply are
inadequate.
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WARNING:
Before operating the ma-
chine, a qualified trained person should
check the safety switches by the following
procedure. Be careful to avoid contact with
cutting parts and sharp edges exposed
during these tests!
The control monitor, viewed through the
starter enclosure window, indicates the condi-
tion of the safety switch circuits. A green light at
location 8 means that all circuits are closed and
machine is ready for operation. A red light at
location 7 indicates one of the safety switches
is creating an open circuit. The lower bank of
red lights will indicate the problem source. See
Figure 24, page 29.
SAFETY SWITCH TEST
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WARNING:
There is a problem in the
safety switch circuit if the lights are not lit
as indicated or if the machine starts with
any cover or guard equipped with switch re-
moved.DO NOT operate the machine in this
condition! Call a qualified electrician to lo-
cate and repair the fault immediately. See
“Inspection”, page 72.
1. With all covers and guards in place, turn
the power disconnect switch to “ON”. Only
the green light at location 8 on the control
monitor should be lit. Turn power discon-
nect switch to “OFF”.
2. Remove one cover or guard equipped
with switch. Turn power disconnect switch
“ON”. Only location 7 and the light corre-
sponding to the switch on the removed
cover should be lit on the control monitor. If
lights are lit correctly, push the “START” but-
ton. The safety switch circuit has been in-
terrupted and machine should NOT start.(If
the machine does start, that safety circuit
has failed. Push the “STOP” button; then
disconnect and lock out power source.
Call a qualified electrician to locate and re-
pair the fault immediately).
3. Turn the power disconnect switch
“OFF” and replace the cover or guard.
OPERATION
Safety Switches
28
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