Installation; Electrical Connections - Graco Lube Sentinel II Instructions Manual

Installation

AUTOMATIC SYSTEM ACTIVATION HAZARD
Unexpected activation of the system could result in seri-
ous injury, including skin injection and amputation.
This device has an automatic timer that activates the
pump lubrication system when power is connected or
when exiting the programming function. Before you
install or remove the Lube Sentinel II Monitor from the
system, disconnect and isolate all power supplies and
relieve all pressure.
Grounding
The equipment must be grounded. Grounding reduces
the risk of static and electric shock by providing an
escape wire for the electrical current due to static
build-up or in the event of a short circuit.
Ground connections should not be connected to con-
duits or other electrical boxes. The ground wire should
be connected to a grounding rod or a grounded bus bar
that is tied to a grounding rod in the earth.
313903B

Electrical Connections

Electrical interference from improperly installed equip-
ment may cause erratic behavior of the device.
When installing the Sentinel II, use 18 - 24 gauge
machine tool wire (MTW). 18 gauge wire is recom-
mended for the input power.
It is also recommended that wiring be run in its own con-
duit to minimize electrical interference. If the installation
is in an area of high electrical noise/interference, or in
trays with other control wiring, a shielded cable pair is
recommended.
Shielded cable should be used on applications where
engines or heavy-duty motors are in close proximity to
the monitor, wiring or sensors. If shield cable is used,
the shield should stay intact as close to the termination
screws as possible. (Do not remove shielding from cable
if it is in a shared tray).
The shield should be connected to the designated
ground at both the sensor and the monitor.
Installation
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