Hired-Hand Emergency Back-Up and Alarms: Dual MOV Surge Protection - Manual

Dual MOV Surge Protection
For EV Controls
HIRED-HAND, INC. • 1733 County Road 68 • Bremen, AL 35033 USA • Phone 256-287-1000 • Fax 256-287-2000
Manual Part No. 4802-5111 rev 5-07 Page 1 of 4
WARNING!
Only qualified electrician personnel familiar
with the construction and operation of this
equipment and the hazards involved should
install and/or service this equipment. Read
and understand all instructions and diagrams
before proceeding. Failure to observe this
precaution could result in equipment damage,
severe bodily injury, or loss of life.
DESCRIPTION
The harness described in this manual has been
designed for increasing the high voltage surge
resistance of the EV controllers Auxiliary Alarm
Contacts. This assembly provides a quick and simple
wire harness for connecting to existing or new
controllers. The MOV harness includes one green
ground wire terminated to a ring terminal and two
prestripped red wires to connect to existing terminal
blocks.
When the kit is received, check for shipping damage.
Part # Description Qty
1903-4041 HRNS Dual 420VAC MOV SurgeAssy 1
Small flat-head screwdriver 11/32 Open-end Wrench
1.0 MOV Surge Protection
Installation
The MOV harness wires should be formed and placed to
allow access to the other terminal blocks. An example
of the EV-3000/3001 is shown in Figure 1.
(1) Disconnect all AC electrical power from the EV
controller.
(2) Remove the Alarm terminal block from the circuit
board. Example of the EV-3000/3001 controller
Auxiliary Alarm Contacts Connector is shown in
Figure 1 and Section 2.0. An example of the EV
S-3 controller Alarm Out Connector is shown in
Section 2.0.
(3) Install the MOV Harness. Ensure that all wires are
clear from hole drilling locations.
(4) Refer to Section 2.0 for the wire connections
diagrams from the EV1200 or EV3000/3001 to the
MOV Surge Protection Harness or Section 3.0 for
the wire connections diagrams from the EV S-3 to
the MOV Surge Protection Harness.
WARNING!
Ensure that the Electrical Power Sources are OFF
during installation / wiring.
Figure 1: MOV Harness Installed inside EV-
3000/3001 Controller
Earth
Ground
Connection
MOV Harness
Auxiliary Alarm
Contacts
Connector PCB168
IMPORTANT!
Ensure that the Green Wire is connected to an
Earth Ground connection point and tightened
securely. The Surge Protection will not function
without a reliable Earth Ground.