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EM-8234 Rev.
M-SYSTEM WARRANTY
M-System warrants such new M-System M-Rester which it manufactures to be free from defects in materials and workmanship during the 12-month period following the date that
such M-Rester was originally purchased if such M-Rester has been used under normal operating conditions and properly maintained, M-System’s sole liability, and purchaser’s
exclusive remedies, under this warranty are, at M-System’s option, the repair, replacement or refund of the purchase price of any M-System M-Rester which is defective under the
terms of this warranty. To submit a claim under this warranty, the purchaser must return, at its expense, the defective M-System M-Rester to the below address together with a
copy of its original sales invoice.
THIS IS THE ONLY WARRANTY APPLICABLE TO M-SYSTEM M-RESTER AND IS IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING ANY IMPLIED
WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. M-SYSTEM SHALL HAVE NO LIABILITY FOR CONSEQUENTIAL, INCIDENTAL OR
SPECIAL DAMAGES OF ANY KIND WHATSOEVER.
M-System Co., Ltd., 5-2-55, Minamitsumori, Nishinari-ku, Osaka 557-0063 JAPAN, Phone: (06) 6659-8201, Fax: (06) 6659-8510, E-mail: [email protected]
MAINTENANCE
Check surge protectors periodically. Many cases of light-
ning are ignored, and even lightning at a far distance often
causes inductive surges.
We recommend that you check your surge protector about
twice a year, before and after the rainy season. Check when-
ever you experience a strong lightning occurrence.
Checking procedure is explained in the following:
■
CHECKING
WIRING
1) Make sure that wiring is done as instructed in the con-
nection diagram.
2) Make sure that the Ground terminal (G) is connected to
the metallic housing of protected equipment.
3) Make sure that the Ground terminal (G) is grounded to
earth.
DISCHARGE FUNCTION
The M-Rester Tester is available for a preliminary checking
of the surge protector’s head element.
Approximate testing procedure without using the Tester is
explained as below.
1) Remove all wiring connected to the surge protector when
you test the element module.
2) Check resistance across the following terminals on the
high resistance range of multimeter (≤1V) and confirm
no conduction. The meter shows a value equivalent to
open circuit.
Terminals (A) – (B), (A) – (C), (B) – (C)
(A) – (G), (B) – (G), (C) – (G)
3) Check that discharging occurs across the same terminals
with a 500V DC 1000MΩ insulation tester. (The tester
shows ≤20MΩ.)
If any of the above tests shows negative, replace the protec-
tor.
