ELGi EN 30X-100, Инструкция по эксплуатации, техническому обслуживанию и запасным частям

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6.10
Maintenance
6.1.10 Belt maintenance
The belts must be tensioned regularly in order to avoid
compressor efficiency loss, belt slippage, and belt failures.
The belts are re-tensioned once every 2000 hrs.
To tension the belt:
 Switch off and isolate the machine from the service line.
 Isolate the machine from power supply.
 Unlock and remove the belt guard, rear panel, and
motor side panel.
 Do not tension belts when hot. Let them cool down to
<140°F (60°C) before performing belt maintenance.
 Loosen the lock nut mounted in the belt tension bolt.
 Screw the tension bolt clockwise.
 Check the belt tension.
 Tighten the lock nut.
 Switch on the machine and verify running.
6.1.11 Belt replacement
To replace belts:
 Switch off and isolate the machine from the service line.
 Isolate the machine from power supply.
 Unlock and remove the belt guard, rear panel, and
motor side panel.
 Loosen the lock nut in the belt tension bolt.
 Screw the belt tension bolt counterclockwise for five
revolutions.
 Remove the old belts.
 Remove and inspect the grooves for wear and tear.
 Check the new belts to see if they are cracked or
damaged. If ok, place the new belts in pulleys without
damaging the belt.Tighten the tensioning bolt.
 Check the belt tension. Increase the tension if required.
 Tighten the lock nut.
 Switch on the machine and verify that the belt runs
without wobbling.
 Let the machine run for 30 minutes.
 Switch off the machine and allow the belts to cool
sufficiently.
 Check the belt tension again.
 Repeat the belt tensioning procedure to set the belts up
to the required static belt tension as specified in the
drive table .
Procedure for assembling taper lock bush
Step
1
Clean and de-grease the bore and taper surfaces
of the bush and the tapered bore of the pulley.
Insert the bush in the pulley hub and line up the
holes. (Half thread holes must line up with half
straight holes.)
Step
2
Lightly oil the grub screws and screw them; do
not tighten yet.
Step
3
Clean and de-grease the shaft. Fit the pulley by
using the taper bush on the shaft and place it in
the desired position.
Step
4
When using a key, it should be first fitted in the
shaft keyhole. There should be a top clearance
between the key and the keyhole in the bore of
the bushing.
Step
5
Using the proper hexagon socket wrench,
gradually tighten the grub screws in accordance
with the torques as listed in the table below.
Step
6
When the drive has been operating under Step
load for a short period (half to one hour), check
and ensure that the screws remain at the
appropriate tightening torque.
Step
7
Fill the empty holes with grease in order to
remove dirt.
Torque values for taper lock bushes
Taper
lock
bush
number
Grub screw
used
Qty
Torque value
(lb. Ft)
1008
1108
1/4” BSW 2 14.1
1310
1315
3/8” BSW 2 14.8
1210
1215
3/8” BSW 2 14.8
1610
1615
3/8” BSW 2 14.8
2012 7/16” BSW 2 22.9
1610
1615
1/2” BSW 2 35.5