MAINTENANCE
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To access & replace the fuse, proceed as follows:
1. Disconnect line power.
2. Using a standard 5mm wide screwdriver, insert it to the slit and pull upwards for both ends
until the cap and fuse are disengaged.
3. Pull the fuse holder and replace the defective fuse. Use below the recommended fuse ratings
and manufacturer in Table 5.2.
4. Return the fuse holder by pushing down the cap until it completely closes.
Table 5.2. Recommended Fuse Replacement
Description
Voltage
Amperage
AC DC Fuse Cartridge, Glass, Time Delay, 5mm x 20mm
250V
5.0A
5.3
Cleaning the Air Filters
The fan air filters are accessible from the left-side front of DTS-2990. See Figure 5.3a.
CAUTION
Damage caused by overheating may occur if the area around the fan is restricted, the intake
air is too warm, or the air filter becomes clogged. The air filter must be removed and cleaned
at least every 30 days or more frequently if the Instrument is operated in a dusty
environment.
Inflow Filter 1
protects the heating elements of
Power Board circuitry compartment from the
dust that comes in together with the air inflow.
Inflow Filter 2
protects the equipment’s inside
electrical parts from the dust that comes in
together with the air inflow.
Figure 5.3a DTS-2990 Fan Filter Location