Omega Vehicle Security HH-21 Manual do Utilizador descarregar pdf (Página 12)

MEMORY BACKUP

During battery replacement, the contents of user-programmed memory

(data, operating modes, etc.) can be saved. Prior to removing the old battery,

turn off the instrument, and connect a Model 80010 battery charger. Then

exchange batteries, and disconnect the battery charger. Do not leave the bat-

tery charger connected to instruments with non-rechargeable batteries.

OPERATION WITH RECHARGEABLE

BATTERY

Model 80010 provides a 9-volt Ni-Cd battery and recharger suitable for use

with the unit. This battery provides 15 hours of continuous operation. This

duration can be extended indefinitely by operating simultaneously from both

the battery and recharger.

OPERATING INSTRUCTIONS

The following instructions make reference to keypad inputs, and display

readouts. Refer to Figure 2 to locate key switches, and identify display dif-

ferences between thermometer models. Model HH-22 is similar in layout to the

HH-23, except operation is limited to K and J thermocouples.

1. DIAGNOSTICS

Automatic diagnostics provide error indicators which are described below.

PROBLEM: LIKELY CAUSE:

Blank display, unit does not (1) Improper battery installation. Check

power-up. battery polarity.

(2) Dead battery.

Low BAT Annunciator. (1) Low battery voltage, install a new

battery. If problem persists, consult

factory.

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Omega Vehicle Security HH-21 Manual do Utilizador Página 12