MET ONE-HHPC-2-Particle-Counter-User-Manual - Particle Counters

Section 5
Maintenance
5.1 Battery maintenance
DANGER
Only qualified personnel should conduct the tasks described in this section of the
manual. MET ONE
The battery status light indicates the relative battery charge status, described in Table 4.
The power supply provided with the instrument serves as battery charger and a direct
power source. Connect the power supply for continuous and long-term sampling.
Table 4 Battery status indicator
Light
Steady green
Flashing green
Red
No light
Charge mode
Fast charge
Maintenance charging mode
Battery is defective and needs to be replaced
Battery is fully charged
5.1.1 Charge a drained battery
To charge the battery:
1. Connect the external power supply (refer to section 3.3.4 on page 14).
2. Turn on the MET ONE HHPC–2.
3. Remove the power supply when no light is seen.
To charge a drained battery:
1. Attach the external power supply to the MET ONE HHPC–2 unit.
2. Wait for five minutes. Turn on the MET ONE HHPC–2.
3. Leave the unit attached to the power supply until the battery charging indicator light
turns off.
5.2 Calibrate the MET ONE HHPC–2
Return the MET ONE HHPC–2 to the manufacturer annually for recalibration to comply
with JIS B9921–1989 standards. The calibration date is displayed on the manufacturer
decal on the back of the MET ONE HHPC–2. Refer to Section 8 on page 31 for MET
ONE HHPC–2 return procedures.
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