Volume 8 – Mechanical and Electrical Services - Malaysia Geoportal

Chapter 5 PLANT MANAGEMENT AND CONTROL
(ii)
Hoisting System
The gear drive units shall be checked daily for oil leaks. When operating, check for unusual noise.
Run at least 10 minutes each week while it is idle. Check the oil level before starting.
No. Item Things to look for
(a) Electrical connections Monthly check on loose connection
(b) Gearbox and actuator Monthly inspection on oil leaks.
(Note: replace oil every two years for SAE 90 EP)
(c) Operator’s control Monthly check for proper operation
(d) Wire rope Monthly inspection on broken strands and wear.
(e) Shaft and coupling Monthly check on loose bolts and broken parts
(f) Drum and sheaves Monthly check on groove wears. Lubricate if necessary
(g) Actuator battery Monthly check on the battery level status (icon
display). Replace battery every 5 years
Note: Detailed information on battery replacement and torque/position monitoring is contained in
Chapter 10 of Rotork IQ Range Installation and Maintenance Instructions.
2 YEARLY OPERATION CHECK
Proper schedule of testing is necessary to ensure the whole gate system continues to function well.
2.1 Gate
Operate the gate through a complete cycle from fully closed to fully open then to fully closed,
checking that the gate moves freely and smoothly.
Tell-tale sign associated with the potential operating problems with the gates:
• Jerking or rough operation
• Leakage through sealing area
• Vibration of the gate
• Abnormal noise
• Binding
2.2 Electrical System
All electrical connections and electrical cables shall be visually inspected for external deformed,
damage, and for indication of possible damages. Equipment found to be deformed or damaged shall
be removed and investigation shall be carried out before being replaced. Check all equipment
grounding conductors for proper connections.
2.3 Hoisting System (Actuator, Gearbox, Transmission Shaft, Rope-drum)
Operate the gate from full open to close and vice versa, check that all parts function properly and
operate smoothly, and that the control of all load during lowering is accurate and not jerky.
5A-12 March 2009