At an examination contemplated in sub regulation (1), the competent lift service provider shall examine the parts of a lift, escalator or passenger conveyor as prescribed by the relevant manufacturer or by an inspector: Provided that in the case of a lift, he or she shall test all the gates and door locks at each examination: Provided further that the suspension ropes of a lift shall be examined at six-monthly intervals and that the lift safety gear, over speed governor and buffers shall be tested at intervals not exceeding 12 months.