Electronic Theatre Controls Sensor User Manual download pdf (Page 52)

47 Sensor+ CEM+ Configuration Manual

CEM+ Fuses

The CEM+ has two fuses:

• The F1 fuse is a 250V, 0.75 amp, fuse. CEM+ operating power and power for the

dimmer module electronics, is drawn through this fuse. If F1 fails, the CEM+ will not

operate and dimming will not work. The Sensor+ rack beacon will be dark. The fuse in

the F2 position is a spare 0.75 amp fuse.

• Phase F3 fuse is a 250V, 5 amp fuse. Power for the rack’s fan is drawn through this

fuse. If F3 fails, the fan will stop running and the CEM+ will display an air flow error. The

Sensor+ rack beacon will flash to signal a problem. The rack may shut down due to

overheating. The fuse in the F4 position is a spare 5 amp fuse.

Replacing a Fuse:

Step 1: Remove the CEM+ module (See Changing Installation Rack Modules, page 45).

Step 2: Locate and replace the defective fuse. Fuses are held in vertical fuse holders.

a: Use a slotted screwdriver to gently turn the cap of the fuse holder to the left

until it comes free.

b: Lift the cap and the fuse straight out of the fuse holder.

c: Remove the defective fuse and replace it with a fuse of the same type. A

spare fuse of each type is provided on the CEM+.

d: Replace the fuse and cap in the fuse holder and use a slotted screwdriver to

gently turn the cap to the right to fully capture the fuse.

Step 3: Replace the CEM+ module and close the door.

Fuse - .75A - CEM+ and

Module Electronics

Fuse - .75A - Spare

Fuse - 5A - Spare

Fuse - 5A - Fan Power

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Electronic Theatre Controls Sensor User Manual Page 52