Alnor HM680, Руководство пользователя, Страница: 32 / 40

26 HM680 Hydronic Manometer
The HM680 Hydronic Manometer is equipped with in-line filters upstream of the shut-off ball valve on
both the High and Low pressure hoses. These filters should be flushed periodically with clean water to
minimize potential clogging.
1.
Disconnect the hose from the manometer.
2.
Turn the shut-off ball valve on the hose to the closed position.
3.
Connect the straight female flare fitting (farthest from the hose shut-off valve) on the hose to a
suitable water source.
4.
Place the open end of the hose in a suitable receptacle or near a drain.
5.
Turn the shut-off ball valve on the hose to the open position and allow water to flush through for
several minutes.
6.
Using a suitable high pressure air source, blow the entrained water from the hose.
7.
Repeat with the second hose.
Cleaning the Instrument Housing
The HM680 Hydronic Manometer may be cleaned using a soft, damp, clean cloth.
Notes:
Solvents or abrasive cleaners should never be used to clean the instrument housing, keypad, or
display.
Battery Charging
The HM680 Hydronic Manometer allows for internal charging of AA-size type NiMH (only) batteries.
Charging of the batteries is initiated as follows:
1.
Turn the manometer off and locate the battery cover on the back of the unit.
2.
Loosen the screw on the battery compartment cover and lift to remove.
3.
Remove the battery holder. Tapping the backside of the meter against your hand may help in
removing the battery holder.
4.
Verify the batteries installed are rechargeable type NiMH.
5.
Set the battery-type selection switch to NiMH.
6.
Reinstall the battery holder. Ensure the battery holder orientation is such that its terminals make
contact with the spring contacts within the battery compartment.
7.
Replace the battery compartment cover.
8.
Plug in the AC Adapter.
Notes
: Full charge of the batteries is achieved within four (4) hours.
Fully charged batteries should enable the instrument to operate for a period of at least twelve
(12) hours.
The manometer is fully operational while charging batteries.
Never
attempt to charge battery types other than AA-size rechargeable NiMH.
For maximum battery life, ensure the backlight is “off” when not needed.