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3. Use only a 3-wire outlet, and do not attempt to defeat the ground terminal on the power
plug to fit into 2-wire outlet. The chassis and housing of the instrument are grounding
through this terminal and it could cause safety hazard if the ground terminal is not well
connected.
4. Do not obstruct the ventilation holes at the rear panel. As this will increase the internal
temperature.
5. Never apply external voltage to the output terminal of this instrument.
6. The instrument is designed for INDOOR USE ONLY.
7. This instrument has been evaluated to INSTALLATION CATEGORY II,
POLLUTION DEGREE 2.
8. A certified power supply cord and AC inlet has to be used with this equipment. The
applicance coupler is the disconnect device to disconnect the main power. DO NOT
remove the equipment before disconnect the appliance coupler.
9. The power cord set shall have a power supply cord with conductors providing a wire
gauge of No.18 AWM minimum. The minimum electrical ratings shall be 125 V~, 60Hz,
15A and marked SJT or SVT etc.
Maintenance
GENERAL MAINTENANCE:
1. Preventive maintenance --- Clean and re-calibrate the instrument on a regular basis to
keep the instrument looking nice and working will.
2. Cleaning --- Remove any dirt, dust and grime whenever they become noticeable on the
outside cover with a soft cloth moistened with a mild cleaning solution.
3. Servicing --- if the instrument ever becomes inoperative or damaged, refer servicing to a
qualified repair facility.
FUSE REPLACEMENT:
If the fuse blows, the LED will not light and the instrument will not operate. Replace
only with the fuse specified in this manual. The fuse is located on the rear panel adjacent
to the power cord receptacle. Remove the fuse holder assembly as follows:
1. Unplug the power cord from rear of the instrument.
2. Insert a small screwdriver in fuse holder slot (located between fuse holder and receptacle).
Pry fuse holder away from receptacle.
3. When reinstalling fuse holder, be sure that the fuse is installed so that the correct line
voltage is selected.
2
DC POWER SUPPLY
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