User’s
Manual
Yokogawa Electric Corporation
IM 77M02Y02-01E
1st Edition: Jan. 2004 (MC)
3rd Edition: Aug. 2005 (KP)
Thank you for purchasing this waterproof box for outdoor
installation. To ensure safety, be sure to thoroughly read
this User’s Manual before using the box, then keep it
handy for future reference.
■
Contents of the Package
Check that the package contains the following items:
䊉
AR-PY or AR-WY main unit: 1
䊉
User’s Manual (IM 77M02Y02-01E): 1
䊉
M4 screws for mounting arresters: 8
䊉
Pipe-mounting bracket: 1 – for AR-PY only
䊉
U-shaped bracket assembly: 1
(one U-shaped bracket and two M8 nuts) for AR-PY only
䊉
Wall-mounting bracket: 1 – for AR-WY only
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M5 screws for fixing the mounting bracket: 4
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Hand tool for drilling wiring holes: 1
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Large wiring cable glands: 4
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Small grounding cable gland: 1
1. PRECAUTIONS FOR SAFE USE OF THE PRODUCT
The following safety symbol is indicated on the product to
ensure safe use.
If this symbol is indicated on the product, the operator
should refer to the explanation given in the user’s
manual in order to avoid personnel injury or death to
either themselves or other personnel, and/or damage to
the instrument. The manual describes the special care
the operator should exercise to avoid shock or other
dangers that may result in injury or loss of life.
The following symbols are used only in this manual.
IMPORTANT
Indicates that operating the hardware or software in a
particular manner may damage it or result in a system
failure.
NOTE
Draws attention to information that is essential for
understanding the operation and/or features of the
product.
2. MODELS AND SUFFIX CODES
Å@
AR-
䊐
Y /AS
Model
Option code:
/AS : Built-in arrester
(must be specified in a separate purchase order)
Blank: No built-in arrester
Mounting method
PY : Pipe mounting
WY: Wall mounting
3. DRILLING HOLES FOR CABLE ROUTING
Use the supplied hand tool to drill as many wiring holes as the
number of cables to be routed, as shown in the figure below.
Normally, drill Hole F for the grounding wire,
Holes B and C for the protected side, and Holes D and E for the
surge side.
Wiring for surge side
Wiring for protected side
Not used
Not used
Wiring for grounding wire
4. MOUNTING METHOD
NOTE
After cable routing, carefully perform mounting so that
moisture will not enter inside the arrester. Also, be careful not
to fasten the cap on the cable gland too tightly as doing so
could damage the cable.
(1) Mount the supplied cable glands on the wiring holes as
shown in the figure below.
Mount four large wiring cable glands on Holes B, C, D, and
E and a small grounding cable gland on Hole F.
(2) Route the cables into the arrester through the cable
glands. The applicable diameters (outer diameters) of the
cables are as follows:
Cable for protected and surge sides: ø9 – 11 mm
Cable for grounding wire: ø5.5 – 7 mm
Cable gland
(cap)
[Outside]
[Inside]
Outdoor-installed waterproof box
Nut
Packing rubber
Cable gland
(main unit)
Models AR-PY and AR-WY
Outdoor-installed Waterproof
Boxes
(for Two Arresters)
Network Solutions Business Division
2-9-32, Naka-cho Musashino-shi, Tokyo 180-8750 Japan
Phone: +81-422-52-7179
Facsimile: +81-422-52-6793
