Lumasense-technologies M330 Manual do Utilizador descarregar pdf (Página 21)

M330 Manual Maintenance  21

5 Maintenance

5.1 Cavity Life

The life expectancy of the cavity depends on the time and temperature of operation. The higher

the temperature, the shorter the life span. At temperatures near the upper end of the range,

the life expectancy is shortened by approximately 50%. We recommend an occasional visual

check be made to insure maximum system integrity. The cavity is field replaceable without

disturbing any control thermocouples. Refer to Section 3.1 Cavity Installation.

5.2 Safety Interlocks

Automatic shut-down will occur if the cavity housing exceeds ~200 °C. Reset must be made

manually when over-temperature causes a shut down. There is a manual reset pushbutton on a

white, ceramic sensor mounted on the stainless cavity box. Remove the rear cover or the top

cover of the cabinet to access this sensor.

The cooling fans will operate only when the internal temperature is above 40 °C (104 °F).

5.3 Periodic Inspections

Check periodically and upon every start up the following items:

1. Unusual cracks or chipping in or around the cavity.

2. Unusual noises and smells when applying power.

5.4 Fuse Locations

The M330 has one or two fuses. Refer to the table below.

Fuse N

µm

ber

Amps/volts

Location

Description

1A / 250

VAC

External Rear

Panel

Fan

1A / 250

VAC

External Rear Panel

Fan

1A / 250 VAC

External Rear Panel

Controller

1A / 250 VAC

External Rear Panel

Controller

40A / 250 VAC

External Rear Panel

SCR

Power switch

16A / 250 VAC

Front panel

Breaker

switch combination

5.5 Cleaning

Clean the outside of the cabinet with mild soapy solution and water only. Vacuum the inside

occasionally to remove dust.

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