Poly V-Belt Tension Adjustment - Atlas Copco PTS 800 T3 Cud Instruction Manual

Protect the electrical and controlling
!
equipment, air filters, etc. against
penetration of moisture.
Never leave spilled liquids such as
fuel, oil, coolant and cleansing
agents in or around the compressor.

6.4.5 Poly V-belt tension adjustment

To check the cooler fan poly V-belt tension, measure
the belt frequency. Use tensioning tool 2913 0022 00.
The arrows show where the frequency should be
measured.
Following mounting frequency applies:
• span 1 = 82±4 Hz
• span 2 = 102±5 Hz
• span 0 = 58±3 Hz.
The mounting frequency must be checked on only 1
strand, after adjustment/replacement of the belt. The
compressor must run for a few minutes. Then, shut
down the unit and readjust the mounting frequency.
Span 1
82 4Hz
Span 3
58 3Hz
Span 2
102 5Hz
- 68 -
Correct the V-belt tension by loosening the fixing
screw (1) of V-belt tensioner (2). Loosen the lock nut
on the adjusting screw (3). Turn the adjusting screw
clockwise to increase V-belt tension or counter-
clockwise to decrease V-belt tension.
After adjusting the V-belt tension, retighten the
adjusting screw lock nut and the fixing screw.
3
2
1