Biobase BSC-4FA2-GL - 3．Common Faults & Solution; Warning and Reminder; Trouble Shooting

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3．Common faults & solution
3.1 Common faults & solution
3.1.1 Warning and reminder
Digital display of pressure difference, digital velocity display, audible and visual alarm system.
1) Over safety height alarm for front window.
There will be audio and visual alarm when front window is lifting over safety height. Same time
LCD display will twinkle exclamation mark. Then just adjust the height of the front window.(Front
window height setting value is 10inch)
2) HEPA filter pressure difference alarm.
There will be audio and visual alarm if pressure of air supply filter or exhaust filter can’t meet
present value, at the same time LCD display will twinkle exclamation mark. Remind the operator to
replace the filter immediately to protect the operator’s safety.
3) Velocity fluctuation alarm.
There will be audio and visual alarm if the inflow velocity and down flow velocity below 20% of the
standard value, namely, inflow velocity below 0.42m/s, down flow velocity below 0.26m/s, at the
same time LCD display will twinkle exclamation mark to remind the operator pay attention.
3.1.2 Trouble shooting
Please confirm whether the power is connected or not, whether the power cord is obvious damaged,
whether the fuse is good before the fault diagnosis.
Faults
Measures
Equipment
doesn’t work
(a)Check whether the power socket inserted tightly
(b)Check whether these three insurance tube of circuit board burned out :zero
line insurance tube F3 12.5A, fire line insurance tube F2 12.5A, transformer
insurance tube F1 125 mA.
(c)Transformer fault or cable poor contact can lead to circuit board working
voltage abnormal.
Blower doesn’t
work
(a)Check whether the motor is broken
(b)If components or the circuit of control panel is broken
(c)Check whether the circuit is well connection
(d)Check whether the blower circuit board fuse F4 6.3 A is burn out .
Motor with
buzzing
(a)Replace motor
(b)Low fan speed settings
fluorescent /UV
lamp doesn’t
work
(a)The corresponding lamp broken
(b)Components or the circuit of control panel is broken
(c)The corresponding ballast broken
(d)Check whether the circuit board fuse is burn out. Fluorescent F6 2.5A, UV
F5 2.5A
Motor or fan
set has a
scratch or
friction
(a)Check the fan cage for debris, pieces of paper, packaging, etc.,and remove
them
(b)The wind impeller may slide on the motor shaft, replace the fan