Preventive Maintenance Edge/Edge Blanket
4-4
Check and Clean Inverters
Check and clean the inverters and theirs cooling
fins (Figure 4-2) weekly with a vacuum cleaner.
Failure to do so may void your warranty.
Required Tools
metric Allen wrench, vacuum cleaner
Perform only when the unit is OFF
with power disconnected.
Turn power OFF at the main disconnect
switch.
Open the left endframe door.
CAUTION
Failure to clean the inverter
and its cooling fins could
void the warranty.
Never use compressed air
on or around electronic
components. Doing so may
damage them.
Check and clean the inverter and its cool-
ing fins with a vacuum cleaner.
Close and secure the left endframe door.
1.
2.
3.
4.
Check For String Accumulation
Check for accumulated string and lint on the
drive shaft rollers and bearings.
Perform only when the unit is OFF
with power disconnected.
Check Rodless Air Cylinder
Bearings
Perform only when the unit is OFF
with power disconnected.
Make sure that the transfer clamp carriage is
moving smoothly along the length of the rodless
air cylinder, without any lateral movement or
play (Figure 4-3).
To ensure proper operation of the transfer
clamp assembly and maximize the life of the
cylinder, the bearings must be replaced at least
every six months. Sooner if needed.
If metal is visible in the cylinder bearings
groove, the bearings will have to be changed more
often. If the groove gets too deep, the cylinder
will have to be replaced.
For more information within this chapter,
refer to the Semi-Annual PM section,
Replace
Rodless Air Cylinder Bearings procedure.
Figure 4-2: Inverters in the left endframe panel.
Figure 4-3 There should be no lateral movement
on the transfer clamp assembly.
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