Urschel COMITROL 1700, Instruction Manual

Page: 16 / 233

SAFETY SWITCH SYSTEM TEST
WARNING: A qualified trained
person must check the safety switch
system for proper function before oper-
ating the machine. There is a problem
in the safety switch circuit if the LEDs
are not lit as indicated or, if having
opened or removed a cover or guard
equipped with switch, the machine can
be started. DO NOT operate the machine
in this condition! Operating the machine
in this condition could result in serious
injury such as amputation! Call a quali-
fied electrician to locate and repair the
fault. See “Electrical Assembly”, page 40.
1. With all covers and guards in place,
turn the power disconnect/lockout
switch to “
I ” (ON). Only the green “relay
condition” LEDs on the amplifier should
be lit (Figure 11, page 15). Push the “
I ”
(START) button. Machine should start.
(See “Troubleshooting”, page 44 if
machine does not start.) Push the “
O ”
(STOP) button and turn power discon-
nect/lockout switch to “
O ” (OFF). Visu-
ally verify machine has come to a
complete stop.
WARNING: Be careful to avoid
contact with cutting parts and sharp
edges exposed during the safety switch
system test. Contact with cutting parts
and sharp edges could result in serious
injury such as amputation.
2. Remove or open one cover or guard
equipped with switch.
Turn power
disconnect/lockout switch to “ I ” (ON).
Only the red “relay condition” LEDs and
the red “switch output” LEDs corre-
sponding to the switch on the removed
or opened cover or guard should be lit
on the amplifier. If LEDs are lit cor-
rectly, push the “
I ” (START) button. The
safety switch circuit has been inter-
rupted and machine should NOT start.
If the machine does start, that safety
circuit has failed. Push the “
O ” (STOP)
button, then disconnect and lock out
power source. Call a qualified electri-
cian to locate and repair the fault
immediately.
3. Turn the power disconnect/lockout
switch to “O” (OFF)
and replace or
close the cover or guard.
4. Individually remove or open each
additional cover or guard equipped
with switch
and repeat steps 2 and 3.
Make sure all covers and guards are
securely in place after safety switch
system has been tested.
14
SAFETY
Safety Switch System