Esco Ascent max, Руководство пользователя и обслуживания

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29
Ductless Fume Hoods
Defective power
supply (SMPS)
•
See Component Layout to locate the SMPS.
•
Disconnect the 5 ‐ pin connector of the SMPS output, measure the DC voltage
between Red (pin 1) and White (pin 2) cables on the SMPS side. See Figure 1 ‐ 4.
•
The voltage should be in range of +7.5VDC ±10%.
•
If out of range, please check incoming power to the SMPS Molded cord into SMPS –
check terminal where the cord is connected. The input of SMPS should be
230VAC±10% for ADC ‐ __1/3 or 115VAC±10% for ADC ‐ __2. If input is correct but
output is not, replace the SMPS.
Connection
problem to main
board
•
See Component Layout to locate the main board.
•
Measure the incoming voltage on the main board at terminal J 13 (Note polarity,
blue cable closest to edge is negative ‐ ). See Figure 1 ‐ 6.
•
Voltage should be between 6.75 – 8.25VDC.
•
If voltage is out of range, check connection between SMPS and main board.
•
If voltage is correct, proceed to next step.
Defective main
board
•
Restart the cabinet 2 to 4 times.
•
The main board is defective if the main board incoming supply is between 6.75 –
8.25VDC and:
o
All LED’s on the control panel are off
o
The LCD is blank
o
No buzzer sound
•
If these conditions exist replace the main board, otherwise proceed to next step
Figure 1 ‐ 4
Figure 1 ‐ 5
Figure 1 ‐ 6
Figure 1 ‐ 7 ADC Membrane
LCD
LED