IEQ Chek
Operation Manual
10
1509-9001 Rev 1
4.2. Switching the Instrument On/Off
NOTE:
When using push-buttons on front of instrument enclosure, press firmly and
watch the display for movement. A light finger press may not engage the domed
contact. This is to prevent accidental changes to settings.
SWITCH ON:
Press the “MENU” button down momentarily then release. The
multi-line LCD will scroll through each of the information functions
as it warms up.
SWITCH OFF:
Hold the “MENU” button down for five to six seconds then release.
The multi-line LCD will indicate
Shutting monitor off
.
After power up, the display indicates
IEQ Chek
™,
PORTABLE AIR QUALITY
MONITOR
,
then
WARMING UP UNIT PLEASE WAIT…
and the inner sample draw
pump (if applicable) starts automatically sampling the environment. A symbol at the
bottom left corner of the display will indicate if the instrument is operating from
batteries or the plug-in wall adapter. After the warm-up period (approximately 3
minutes), the LCD indicates all installed sensors, their current real-time readings, and
a flashing cursor.
NOTE
: More accurate real-time readings will occur after the sensors have warmed up
and stabilized.
NOTE:
Warm-up mode can be skipped by holding the MENU button for 3-5 seconds.
4.3. Battery and Battery Warnings
The IEQ Chek™ operates from three different power sources: Rechargeable nickel
metal hydride NiMH) batteries (3
×
AA), disposable alkaline batteries (3
×
AA), or
plug-in wall adapter/battery charger. The IEQ Chek™ is supplied with and configured
for rechargeable batteries from the factory
.
CAUTION:
To change from one type of battery to another (e.g., rechargeable to
alkaline), you must first make the change through the instrument menu.
NOTE:
The battery tabs are such that even if batteries are installed incorrectly (with
polarities reversed), no damage will occur. Nevertheless, always take care when
installing any kind of battery.
NOTE:
The instrument will not charge the NiMH batteries unless the instrument is
switched off.
CAUTION:
A yellow warning label is on the battery door of the IEQ Chek™ to alert
users of the potential risk of damage to the device if alkaline batteries are installed
and
the user mistakenly attempts to recharge them with the supplied wall adapter.
Recharging alkaline batteries could cause them to leak, thus creating potential harm
and/or physical damage to the instrument. Damage caused by this type of action is
not
covered under warranty and the manufacturer is not responsible.