Operating Instructions

Chapter 3 – Mechanical Installation
Siemens Building Technologies, Inc. 5
Chapter 3 — Mechanical Installation
Installation after Extended Storage
After an extended period of storage, recharge the capacitors in the SED2. Calculate the
storage time from the date of manufacture, and not from the date of delivery. The recharge
procedure varies according to the storage period as follows:
Period of
Storage
Required Action
Preparation
Time
1 year or
less
Recharging not required. No preparation
1 to 2 years Before issuing the “run” command, connect the SED2 to the mains
for one hour.
1 hour
2 to 3 years Use a variable AC power source as follows:
• Apply 25% of the input voltage for 30 minutes.
• Increase the voltage to 50% for an additional 30 minutes.
• Increase the voltage to 75% for an additional 30 minutes.
• Increase the voltage to 100% for an additional
30 minutes.
The SED2 is then ready for operation.
2 hours
3 or more
years
Use a variable AC power source as follows:
• Apply 25% of the input voltage for 2 hours.
• Increase the voltage to 50% for an additional 2 hours.
• Increase the voltage to 75% for an additional 2 hours.
• Increase the voltage to 100% for an additional 2 hours.
The SED2 is then ready for operation.
8 hours