Oerlikon Leybold Vacuum Sogevac SV630 B Operating Instructions Manual page 39

Tightening values of the notched V-belts
Pump Belts
L (mm)
SV630 B 1500 9 714 30 590
SV630 B 1532 9 714 37 640
USA/JPN
SV750 B 1582 9 714 33 170
* Re-tighten with values given in column (1)
Measure always on the same belt.
ATTENTION: Do not untighten a belt if the measurement is over the value in
column (1). Do not change the V-belt tension.
M. Lubricating the bearings
The SOGEVAC pumps SV630 B, SV630 BF and SV750 B are equipped with
®
separate grease-lubricated bearings. In normal operation the permanent-
lubricated bearings are provided for 30 000 hours of maintenance-free
operation.
With increased thermal load, i. e. continuous operation at high intake
pressures, gas ballast operation, it is advisable to check the bearings at
shorter intervals. To do so, remove the rear and front covers (97 and 136).
Test the bearing grease. If the grease is resinified, clean the bearings and
change the grease.
Use high-temperature grease (ref. N° 711 17 700).
Grease quantity per bearing :
Bearing
(94)
Bearing (139)
Before run-in
Pin Force Frequency
F (N)
50 mini 69
maxi 71
50 mini 69
maxi 71
50 mini 65
maxi 68
9 714 25 960
714 03 880
Re-tightening
(after 10 to 24 h)
(1)
Force
f (Hz) F (N)
45
45
45
40 cm ou 45 g
3
60 cm ou 65 g
3
GA02319_002_03 - 07/2007 - © Oerlikon Leybold Vacuum
Maintenance
Regular check
(≈6 months or 3000 h.)
Value under which a
re-tension is
necessary. *
Frequency Force
f (Hz) F (N)
mini 64 35
maxi 66
mini 64 35
maxi 66
mini 61 35
maxi 63
Frequency
f (Hz)
58
58
58
39