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What This Chapter Contains
The chapter contains preventive maintenance instructions and LED indicator descriptions .
Maintenance Intervals
If installed in an appropriate environment, the drive requires
very little maintenance . The table lists the routine maintenance
intervals recommended by Daikin McQuay .
Table 71: Maintenance Interval Instructions
Maintenance
Interval
Instructions
Reforming of capacitors
Every year when stored
See Capacitors on
.
Check of dustiness, corrosion and temperature
Every year
—
Replacement of the cooling fan (frame sizes R1…R4)
Every three years
See Cooling fan on
.
Check and tightening of the power terminals
Every six years
Replacement of the battery in the Assistant Control Panel
Every ten years
See Changing the battery in the Assistant Control Panel on
Consult your local Daikin McQuay representative for more
details on the maintenance . On the Internet, go to http://www .
abb .com/drives and select Drive Services – Maintenance and
Field Services .
Cooling Fan
The drive’s cooling fan has a life span of minimum 25 000
operating hours . The actual life span depends on the drive
usage and ambient temperature .
When the Assistant Control Panel is in use, the Notice Handler
Assistant informs when the definable value of the operating
hour counter is reached (see parameter 2901 COOLING FAN
TRIG) . This information can also be passed to the relay output
(see parameter 1401 RELAY OUTPUT 1) regardless of the
used panel type .
Fan failure can be predicted by the increasing noise from
the fan bearings . If the drive is operated in a critical part of
a process, fan replacement is recommended once these
symptoms start appearing . Replacement fans are available
from ABB. Do not use other than Daikin specified spare parts.
Replacing the Cooling Fan (frame sizes
R1…R4)
Only frame sizes R1…R4 include a fan; frame size R0 has
natural cooling .
1 . Stop the drive and disconnect it from the power line . Wait
for five minutes to let the drive DC capacitors discharge.
Ensure by measuring with a multimeter (impedance at
least 1 Mohm) that there is no voltage present .
2 . Remove the hood if the drive has the NEMA 1 option .
3 . Lever the fan holder off the drive frame with eg a
screwdriver and lift the hinged fan holder slightly upward
from its front edge .
4 . Free the fan cable from the clip in the fan holder .
5 . Disconnect the fan cable . Use long-nose pliers if needed .
Figure 28: Disconnecting Fan Cable
WARNING
Read and follow the instructions in chapter Safety on page 15 .
Ignoring the instructions can cause physical injury or death, or
damage to the equipment .
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www .DaikinApplied .com 99
OM 1190-1 • MD4 VFD
Summary of Contents for ACS320
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