12-10-2011

PRODUCT BULLETIN

This Bulletin relates to the ISO-MAX® Solar Connect DC ISOLATOR supplied by Eltech Industries.

Eltech Industries has recently become aware of a very small incidence (0.013%) of suspected failures

relating to its range of ISO-MAX® Solar Connect DC ISOLATOR switches.

There may be certain conditions, where the Isolator, if not correctly installed / commissioned /

operated, could overheat, which potentially could lead to an electrical fire within the Isolator enclosure.

The conditions identified are –

1. Ingress of water into the Isolator enclosure: This can potentially cause arcing between the

poles of the Isolating switch. This condition may occur where the installer has made

penetrations in the enclosure, other than those provided, thereby compromising or voiding the

IP66 rating of the enclosure.

2. Non-positive operation of the Isolator actuator: This can potentially cause arcing and

overheating of the switch contacts, in the situation where the actuator has not ‘clicked’

positively into the ON position. The installer must ensure correct operation of the switch.

3. Loose/poor Cable Terminations: There can be up to 8 cable terminations to the Isolator.

‘Loose’ terminations at the Isolator can cause arcing, overheating and ultimately destruction of

the Isolator. It is essential the Installer checks for tightness of each connection.

4. Use of the Isolator as a ‘Load Break Switch’: This can cause protracted arcing within the

contact chambers of the Isolator, which can potentially lead to overheating and fire, and/or

destruction of the contacts. It is important to note that the ISO-MAX® is designed as an Isolator,

not a Load Break switch. Before actuating the Isolator, it is essential to ensure that all

downstream loads are disconnected.

In the case of any suspected failure, we require -

a) Return of the original Isolator & enclosure to Eltech Industries for inspection and assessment,

b) A copy of the original Certificate of Compliance for the installation, completed by the installing

Electrician/Electrical Contractor,

c) Advice of the size of the installation, eg. Kw/Current rating.

c) A copy of any Tax Invoice rendered by the Electrician/Contractor covering any rectification

works.

e) For any claim to be considered, it must be received by us within 6 months of the date of this

Bulletin.

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Eltech Industries takes all reported problems seriously, no matter how small the incidence, and are

constantly striving to improve the range and quality of products offered.

For further questions on this Bulletin, please contact our Customer Service Manager on 03 9737 2100, or

e-mail your question to info@eltechindustries.com.au

Anthony Arkcoll

Customer Service