Milnor MP1540 Series, Manual

Page: 39 / 107

Wiring Safety Fence Gate Interlocks on Milnor
®
Shuttles, Presses and Centrifugal Extractors
PELLERIN MILNOR CORPORATION
3.
Testing
Once wiring is completed, it is vital to test the system to ensure that:
1. all gate interlocks function properly, and
2. all components that were part of the machine's three-wire circuit before the gate interlocks
were added continue to function properly. The objective is to ensure that the added wiring did
not inadvertently bypass existing components.
3.1.
Testing Gate Interlocks
1. Close all gates.
2. Restore power to all interlocked machines.
3. For each gate:
a. Start all interlocked machines ( 1 ) and place in Manual mode (all machines idling in
manual).
b. Open the gate and verify that all interlocked machines shut down (as indicated by their
individual operator alarms).
c. Close the gate so the next gate can be tested.
3.2.
Testing Three-wire Circuit Components on Each Interlocked Machine
—
Typically, these include the components listed in Table 1 .
Table 1: Typical Three-wire Circuit Components
Found On
Component
Shuttle Press
Centrifugal
Extractor
Stop (
0
) push button on control panel
[ [ [
Emergency Stop switch(es) (locking push button)
[ [ [
Manually lifted access door (typically two per machine)
[
Manually removed access panel (typically two per machine)
[
Pull cord (certain shuttles)
[
Kick plate (typically two per machine)
[
Test each interlocked machine as follows:
1. Start the machine and place in Manual mode (machine idling in manual).
2. For each three-wire circuit component on the machine:
a. Actuate the component (e.g., press the Stop button) and verify that the machine shuts
down (as indicated by the operator alarm).
b. If needed, de-actuate the component. For example, release an Emergency Stop switch or
close an access door, so the next component can be tested.
— End of BISUUI02 —
35