Table of Contents
Advertisement
Fusing Information
WARNING: To reduce the risk of fire, replace fuses only with the same type
and rating.
Both units use a universal switching power supply that handles the full range of
nominal mains voltages between 90 and 264 VAC and any frequency between 50 Hz
and 60 Hz.
Check Main Fuse
The Main fuse rating is:
T 1A L (1 Amp, 250 V, 20 mm, time-lag, low breaking capacity) for all operating
voltages.
WARNING: The power to the unit must be off when the following steps are
performed. Ensure that the main power cable to the unit is not connected to a
power source.
1. Open the fuse compartment door in the AC power input housing with a small flat-
blade screwdriver (Figure 1). Carefully pull out the fuse carrier.
2. Check that the replacement fuse has the correct rating. The fuse carrier must be
inserted into the compartment carefully. Do not force the carrier into the
compartment or both could be damaged.
3. Snap the fuse compartment door closed.
Internal Fuse
The switching power supply contains a separate fuse. Most fault conditions should be
protected by the main fuse.
If you find it necessary to replace the internal fuse, be certain to replace it with a fuse
of the same type and rating as printed on the switching power supply board.
Figure 1 Checking the Main Fuse
Advertisement
Table of Contents
