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6. Operating the grab
6.1. Preparation for safe and correct operation
After whole installing procedure as described in the previous chapter, the grab is ready to operate. However,
before starting up the grab, please make sure the followings :
mechanical connection between the grab and the carrier
locking status of the mounting pins
hydraulic connections between the grab and the carrier
exact setting of the relief pressure
no oil leaks from the hydraulic connections and any parts of the grab
no defective or loosened parts of the grab
cracks, wear, loss, etc.
Check the followings moving the grab :
corresponding the grab movements and the rotating direction with the appropriate actuating
switches in the carrier
‟s cab
smooth opening and closing of the grabs
smooth rotating of the grab
no abnormal sound and no vibration during the operation
WARNING!
Read carefully and follow all safety regulations concerned with the preparation for safe
operation. Refer to page 6,
”1.2. Preparation for safe operation”.
6.2. Greasing
Apply grease to every grease nipple
– marked with the “Greasing Port” label – at the joint pins and slewing
bearing of the grab using recommended greases.
Recommended greasing Interval : Every 2 hours
4 ~ 5 strokes from a grease gun to each greasing nipples are sufficient in each case
Adapt greasing interval and amount of grease to working conditions
Insufficient greasing may cause abnormal wear of the joint pin or slewing bearing
Grease with the following properties are recommended:
No dropping point (or very high, over 250
°
C / 480
°
F)
Max. working temperature over 150
°
C / 300
°
F
Min. working temperature under lowest ambient temperature
Additives : molybdenium disulphide (MoS
2
), graphite or equivalent
Grade (thickness) NLGI 0~2
Water resistant
Содержание EPG05
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