Equip ment cleaning. 24, Rf in put con nec tor. 24, In stru ment case. 24 – Bird Technologies 6091P Manuale d'uso

Pagina 34: Front and rear panels. 24, Dis play win dow. 24, Equipment cleaning, Rf input connector, Instrument case, Front and rear panels, Display window

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Preventive Maintenance

The preventive maintenance procedures listed and referenced in table 4 are designed

to prevent equipment failures and downtime. Perform these procedures at the recom-

mended intervals.

Bird Model 6091 Calorimeter

22

Frequency

Task

Procedures

Before use

Check load resistor.

Check ac power cord.

Check coolant level.

Check GPIB address.

Visually inspect center conductor pin of RF in-
put connector for signs of wear or spreading.

Measure resistance between inner and outer
conductors of RF input connector. Resistance
should be 50, ±2 ohms.

Inspect for worn or broken insulation. Replace
power cord, if worn or damaged.

With the Calorimeter running, check that the
ADD COOLANT annunciator stays off. If an-
nunciator is on or flashing, fill coolant reser-
voir per the instructions in the coolant para.

With the Calorimeter running, press the LO-
CAL/ADDRESS key. The current GPIB ad-
dress will be displayed on the front panel. If
the address is incorrect, reset ADDRESS dip
switches per the instructions.

Weekly

Clean exterior of the
calorimeter unit.

Clean the exterior connector and surfaces of
the unit per the Cleaning paragraph.

Monthly

Clean the air filter el-
ement.

Replace the coolant.

Remove and clean the air filter element per
the instructions.

Drain coolant per the instructions. Fill the
coolant reservoir with clean coolant.

Trimonthly

Test Calorimeter per-
formance.

Perform equipment performance testing per
the instructions.

Semi-
annually

Replace coolant filter.

Return unit for cali-
bration.

Remove and replace the coolant filter per the
instructions.

Package calorimeter unit per the instructions
in the Preparation for Storage and Shipment
section. Return the unit to the nearest autho-
rized service center for recalibration.

Table 4

Preventive Maintenance

Procedures

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