breaker (MCC) prior to commencing repairs.
Thoroughly clean the assembly before starting testing or repairs Cleaning simplifies the work of inspection.
Apply identifying tags or labels to matching ends of conduits and tubes and note their relative locations/positions and
routing before disconnecting/removing.
Note the positions of operating levers with the valves both open and closed, before removing the levers. Reinstall all
operating levers in their original relative positions at reassembly.
Use chain hoists, jacks or other approved lifting devices when lifting heavy components. Position the lifting device to
remove components with straight line motions and set or tighten to relieve loads on the mounting hardware before all
hardware is removed.
Protect all removed components, even when known defective, to ensure availability for reinstallation, repair or salvage.
Install covers on all open lines or ports, both the plant and removed parts, to prevent entry of foreign objects.
Maintain the cleanliness of the work area during disassembly of removed parts to avoid contamination of internal
mechanisms Give particular attention to tubes, conduits, valves, cylinders, and other liquid or air system components.
Replace all removed O-rings, lock-washers, locknuts, packing, gaskets, and seals with new parts Clean/scrape sealing
surfaces with non-metallic tools. Lubricate the 0-rings with a heavy petroleum based grease at installation.
The following sections may contain commercial service manuals which address a single item.
These manuals may be in slightly different format. The commercial manuals contain the
information necessary for service of the item. A complete review of the data should precede any
In addition to these service instructions complete plant preventive maintenance checks and
services (PMCS) and a lubrication Order (LO) are provided. In case of a conflict between these
documents and any instructions found in this section (commercial manuals) the PMCS and the LO
shall take precedence.