Product Safety Information
General Safety
This product meets IBM safety standards.
Safety Notices
For
Safety Notices
refer to
IBM 3745 Communication Controller All Models
,
IBM
3746 Expansion Unit Model 900
,
IBM 3746 Nways Multiprotocol Controller Model
950
,
Safety Information
, GA33-0400
Safety Notices for United Kingdom
1. The IBM 3746 Expansion Unit Model 900 and IBM 3746 Nways Multiprotocol
Controller Model 950 are manufactured according to the International Safety
Standard EN 60950 and as such are approved in the UK under the General
Approval Number NS/G/1234/J/100003 for indirect connection to the public
telecommunication network.
2. The network adapter interfaces housed within the IBM 3746 Expansion Unit
Model 900 and IBM 3746 Nways Multiprotocol Controller Model 950 are
approved separately, each one having its own independent approval number.
These interface adapters, supplied by IBM, do not use or contain excessive
voltages. An excessive voltage is one that exceeds 42.4 V peak ac or 60 V dc.
They interface with the IBM 3746 Expansion Unit Model 900 and IBM 3746
Nways Multiprotocol Controller Model 950 using Safety Extra Low Voltages
(SELV) only. In order to maintain the separate (independent) approval of the
IBM adapters, it is essential that other optional cards, not supplied by IBM, do
not use mains voltages or any other excessive voltages. Seek advice from a
competent engineer before installing other adapters not supplied by IBM.
Service Inspection Procedures
The Service Inspection Procedures help service personnel check whether the 3746
conforms to IBM safety criteria. They have to be used each time the 3746 safety is
suspected. The
Service Inspection Procedures
section is located at the beginning
of the:
3746-950 Service Guide
, SY33-2108.
3746-900 Service Guide
, SY33-2116.
The 3746 areas and functions checked through service inspection procedures are:
1. External covers
2. Safety labels
3. Safety covers and shields
4. Grounding
5. Circuit breaker and protector rating
Copyright IBM Corp. 1998, 1999 xxi
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