Atlas Copco ZR 200 Instruction Book page 58

Medium temperature
(°F)
122
176
185
194
203
212
221
230
Torque values
Compensator bolts should be torqued in 3 successive steps
• Step 1: Hand-tighten each bolt.
• Step 2: Torque the bolts crosswise up to the value mentioned in the table below and allow a
stabilization period of 30 minutes before moving to step 3.
• Step 3: Torque the bolts crosswise up to the value mentioned in the table below.
DN Step 1
(inch)
2 – 3 hand tight
4 – 12 hand tight
14 – 20 hand tight
Do's and don'ts
The supplied compensators are NOT designed:
• to carry the weight of the mounted customer pipe end.
• to work as a damper for unanchored pipe ends.
• to carry the thrust forces of the compressed air.
Therefore, adequate supporting and anchoring of the customer pipe end should be foreseen to
avoid compensator damage.
56
Correction factor for maximum working pressure of
• Mind the parallelism of the sealing.
• Excessive torque will damage the sealing.
Step 2 Step 3
(lbfin) (lbfin)
443 708
443 885
443 1551
the compensator
1
1
0.92
0.83
0.75
0.67
0.6
0.54
Instruction book
AIF999999