Problem Information Form; Preventive Maintenance; Praesideo Lifetime - Bosch Praesideo Service Manual

Praesideo| Service manual | Chapter
3.6

Problem information form

This document helps your local Bosch contact person, local service partner and Bosch Support people with
solving your problem with a Praesideo system. (See chapter 13)
3.7

Preventive Maintenance

The preventive maintenance intervention of the Praesideo system depends on the ambient conditions. All
power amplifiers have fans which blow ambient dust to the PCB's this raises the intervention times.
•
Vacuum cleaning of the power amplifier every +/- 2 years (depending on the ambient dust)
•
When used, vacuum clean the rack mounting filters of the cooling fans +/- 2 years (depending on the
ambient dust)
•
Replace after +/- 8 years the battery on the main PCB of the Network Controller.
Used type: Coin CR2032 3V 220mAH
Caution: This exchange should be done with the unit under power, as otherwise
settings are lost. Beware of the risk of an electric shock. See also chapter 8.5.3
•
Prevent or remove animal nests (mice and rats can eat the cabling)
•
The fibres of the POF (plastic optical cable) can be cleaned with isopropanol or cleaning alcohol.
3.8

Praesideo Lifetime

The calculated lifetime of the Praesideo range is based on manufactures specification of the weakest
component in every unit.
This lifetime depends strongly on the ambient temperature where the Praesideo equipment is installed.
If a limited service lifetime is a requirement, the following relation with ambient temperature needs to be
considered:
A rule of thumb, for every 10 °C less ambient temperature, the lifetime of the unit doubles.
All Praesideo units (Power Amplifiers excluded): 100.000 Hours (11.4 years) lifetime at 45 °C
Praesideo Power Amplifiers:
For rack-mounted units the temperature in the rack needs to be considered as ambient temperature.
When for example a service lifetime of 15 years needs to be provided, two things can be done:
1. Make sure that the ambient temperature is kept below the indicated temperature for the required
lifetime. (See Figure 1. The vertical
to be 15 years)
2. Calculated intervals for replacement of the units. For Ambient temperatures higher than what is
needed for the required lifetime, indicate the replacement period for system components.
(See Figure 1. For example if the ambient temperature is 45°C, than before 7.5 year the Power
Amplifiers need to be exchanged).
60
55
50
40
30
20
10
0
3.65
Power Amplifier Lifetime (years)
Figure 1. Power Amplifiers and Praesideo lifetime
Bosch Security Systems | 2004-28 | 3922 880 62312
marker
45
35
25
15
7.3 14.6 29.2
64.000 Hours (7.5 years) lifetime at 45 °C
shows at which ambient temperature the lifetime is expected
60
55
50
40
30
20
10
0
5.7
Praesideo Lifetime (years)
45
35
25
11.4 15 22.8 45.6
en | 7