Esco Ascent max, Руководство пользователя и обслуживания

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Problem 8: Light always OFF
Cause Corrective Action
Sash in SASH
ALARM state
•
Move the sash to Ready position (normal operating height).
•
Switch on the light by pressing LIGHT button on the membrane.
•
Light can only be ON at Ready sash position.
•
If light cannot be ON when sash at Ready position, proceed to next step.
Faulty fluorescent
tube
•
Replace the faulty fluorescent tube.
•
Fluorescent tube is located inside the blue panel.
Faulty Fluorescent
ballast
•
See Component Layout to locate the fluorescent ballast, connector C, and relay
board.
•
Turn on the cabinetthen the light by pressing LIGHT button on membrane.
•
Check AC voltage at ballast input (between pin NO on J13 terminal on relay board to
neutral), see figure 8 ‐ 1.
•
It should be 230VAC±10% for 230V cabinet or 115VAC±10% for 115V cabinet.
•
If not, check the LS7 relay and F7 fuse (refer to possible cause faulty relay below).
•
Turn off the unit.
•
Disconnect male connector C on electrical box.
•
Turn on the unit.
•
Turn on the light, then check AC voltage at ballast output (between female
connector C pin 1 and 2), it should be around 450 ‐ 600Vac.
•
Replace ballast if output voltage is much lower than this range.
Ready magnetic
switch is not
connected
properly, faulty or
misaligned
•
Move sash to Ready position. The LCD should show either “FAN OFF” or showing
velocity.
•
If the LCD showing “SASH ALARM” instead, please check position/alignment of the
magnetic switches in relation to the magnet. See figure 8 ‐ 2.
•
Shift the switch or magnet position so the distance between them is between 10 ‐
13mm as explained in. If the distance is too far, the switch may not be able to detect
the magnet.
•
If the LCD still showing “SASH ALARM”, the switch may be faulty (please replace it)
or the connection may have problem. For checking on connection, follow next step.
Figure 8 ‐ 1
Figure 8 ‐ 2