21
Once a year, the following maintenance should be
performed:
• Visual inspection of all pipe connections, covers
and electrical connections/cables, to ensure attach-
ment and tightness.
• Ensure that all electrical connections are tightened
properly.
• Ensure that both cooling fans for the AC drive are
running at full speed, and possibly also remove any
dust deposits from the fans.
The AC drive is equipped with 2 cooling fans, that oper-
ates as soon as the blowers main switch is turned on.
Expected lifetime for these 2 fans are 4-6 years contin-
uous operation, where after they will reduce their rpm,
and finally stop (see section "Troubleshooting"). The
fans should be replaced before their output are reduced
significantly, to ensure correct cooling of the AC drive.
The MultiAir blower should be stored in dry, non-corro-
sive atmosphere, at temperature between -20 and +55 °C.
Important:
Important: If the AC drive has been without voltage
supply for longer than 12 months, Kongskilde must be
contacted before the blower is reconnected. Otherwise,
the AC drive can be damaged, as it contains capacitors
that must undergo a startup procedure.
Troubleshooting:
Fault
Cause
Remedy
No power on the operators
panel
Missing main power supply or
switched off main switch.
Interrupted circuit breaker at the
blowers AC drive
Check that the main power supply is con-
nected and that the main switch on the
blowers side panel is on.
Reconnect the circuit breaker (see sec-
tion "Electrical installation")
The blower does not start when
the "Start" button is pushed
The blower has been switched off
on the main switch and switched on
again too fast.
"Remote" is chosen on the
operator´s panel.
Operator
has not access to oper-
ate the blower.
Digital input signal External Stop
NC not chosen and / or corre-
spondingly connected in terminal
X30.
The blower AC drive damaged due
to overvoltage caused by loose
wiring or vibrations transmitted to
the blower from the ground or the
connected pipe system
Reset error with "Ack Fault" on the op-
erators panel.
Login as
Tech
or
Admin
and set to "Lo-
cal" (if needed).
Login as
Tech
or
Admin
and set correct
access for
Operator
(if needed).
Connect stop to terminal X30 or check
connection. Chose the correct digital
input on the operator panel.
Replace AC drive and tighten wiring con-
nections securely. Check for vibrations
and correct according to section "Mount-
ing"
The blower does not stop when
the "Stop" button is pushed
"Remote" is chosen on the
operator´s panel.
Operator
has not access to oper-
ate the blower
Login as
Tech
or
Admin
and set to "Lo-
cal" (if needed).
Login as
Tech
or
Admin
and set correct
access for
Operator
(if needed)
The blower does not start or
stop when operated from the
digital input
"Local" is chosen on the operator´s
panel.
The digital input "External Stop NC"
has not been configured correctly
Login as
Tech
or
Admin
and set to "Re-
mote" (if needed).
Ensure that the circuit is closed
