Service manual

990-1008, Revision 1, 4/991
1. Introduction
Smart-UPS DP Service procedures should only be performed by authorized electricians or personnel who have
been specifically trained to service Smart-UPS DP systems.
Whenever AC and/or DC voltage is applied there may be AC voltage at the UPS output, because the UPS can
supply output power from mains and from its batteries. To avoid equipment damage or personal injury, always
assume that there may be voltage at the UPS output.
This unit contains components that are sensitive to electrostatic discharge (ESD). Failing to follow proper ESD
procedures can result in severe damage to electronic components.
WARNING
Make sure that mains supply is switched off before any service is carried out on the Smart-UPS DP.
1.1 Service Policy
The purpose of the Smart-UPS DP system is to protect electronic equipment against breakdowns that can result
from an unstable power supply. The Smart-UPS DP system improves data safety, system up-time, and
operational security during normal operations.
It is APC’s policy to deliver reliable, high quality products. This is stated in APC’s quality system.
Quality assurance begins during product development where we design our Smart-UPS DP in consideration of:
• using few components to minimize errors
• choosing the market’s best components from approved suppliers
• following the operating principles, which ensure reliability and operating safety
• making the system easy to install and control
• making the system easy to maintain
• ensuring an environmentally friendly installation
During production, we ensure the quality through a large number of tests of components, modules and systems.
Further, education of our production employees and optimizing the production process, enhance production
quality.
It is APC’s goal to make 100% up-time possible for the installations of our customers.
The Smart-UPS DP system is designed for longevity and experience, most APC UPS systems function at least
10 years. This, however, requires that the system is checked and maintained regularly. We therefore recommend
our customers to follow APC’s maintenance programs.
1.2 A Smart-UPS DP System Must Be Maintained
Even though APC’s systems are designed and produced by the latest and safest technology, all Smart-UPS DP
systems must be maintained.
The system contains components and parts which, in time, will be worn out or have a limited life. These parts
must be checked and, in the course of time, replaced to avoid defects in the system.
APC guaranties delivery of spare parts for all Smart-UPS DP systems for at least 10 years after ending the
production of the product.
APC recommends a service contract for all Smart-UPS DP installations. A service contract will ensures that the
Smart-UPS DP system is always in perfect condition to protect the critical installation against power failure.
You can sign up for a service contract with any authorized APC service center.
A service contract includes thorough inspection and test of the system in determined intervals and worn parts
and components with limited life will be replaced in time. Furthermore, we ensure the customer against