Electrical Installation; Installing The Battery - Ametek 120HD User Manual

Figure 1-2.
Place the battery
inside the
compartment and
attach the battery
jack.
1-6 | Model 120HD Hydrogen Analyzer

Electrical Installation

Installing the Battery

The Model 120HD operates on power supplied by (1) 6V No. 521
Energizer Industrial Alkaline Lantern Battery. Follow the instruc-
tions below to install the battery.
1. Turn Knob 1 to the OFF position.
2. Loosen the two thumbscrews on the front left-hand panel
so that you can open the door to the battery compartment.
Slide the door up and off of the hinges to remove it and
allow easier access to the battery compartment.
3. Inside the battery compartment there will be a battery instal-
lation harness that consists of a jack and two terminal wires.
4. Remove the terminal screw covers from the battery and
attach the terminal wires from the battery harness to the
battery. The red terminal wire is the positive (+) terminal.
The black terminal wire is the negative (-) terminal.
Be sure to observe polarity as marked on the battery.

NOTE
5. Replace the terminal screw covers on the terminal posts.
6. Slide the battery into the battery compartment with the terminals fac-
ing outward towards you.
7. Plug the jack from the battery harness into the jack outlet on the right-
hand side of the battery compartment.
8. Slide the door to the battery compartment back onto the hinges, close the
door and tighten the thumbscrews.
Before closing the battery compartment door, arrange the terminal
wires in such a way so that they are clear of the tab on the inside of the
door and it does not press against them.
9. Turn Knob 1 to SET. The display should turn on. If it does not, the
battery is not connected correctly. Turn Knob 1 to OFF and check the
battery connections.