COMPRESSOR AS 4531717 - Caterpillar

Safety of Persons
The following sections contain safety precautions to observe as part of a general accident protection program.The UPS must be installed in a room with restricted access. Only qualified personnel should have access to the room. A UPS has a battery as an internal power source. The power outlets may be energized even if the UPS is disconnected from the AC power source.High voltage levels are present within the UPS. The UPS should be opened only by service personnel that are qualified.
High voltage may be present. Work on this equipment must be performed by authorized trained personnel. Failure to disconnect the power source before performing maintenance or removing modules exposes personnel to electrical potential. Bodily contact with electrical potential will cause serious personal injury or death.
After power is removed, wait for 5 minutes before the UPS is opened. This action allows the capacitors to discharge. Ensure that the capacitors are at a zero energy level before performing work.Personal Protective Equipment (PPE) suitable to the work being performed must be worn when performing maintenance on the UPS.
High voltage is present. Work on this equipment must be performed by authorized trained personnel. Personnel must be wearing Personal Protective Equipment that meets regulatory requirements to protect the body for the work that is being performed. Failure to use appropriate PPE to protect the body will result in serious personal injury or death.
High Leakage Current
Illustration 1 g02174152
The UPS is subject to high leakage current. The UPS must be connected to an earth ground before the supply is connected.
Failure to connect the unit to a suitable grounding electrode creates an electrical shock hazard. An electrical shock will result in serious personal injury or death.
Leakage current in a UPS is typically caused by input filters that are designed to protect against voltage surges. Some leakage current is allowed to pass from the input to a ground path or wire that leads to earth ground on the system. If there is no earth ground connected on the system, there is no place for this leakage current to pass.Battery Precautions
Never burn the battery. The battery may explode if the battery is burned.
Do not attempt to open the battery. The electrolyte is dangerous for the eyes and skin.
Comply with all applicable regulations for the disposal of the battery.
The battery must be replaced only by qualified personnel.ReferenceFor additional precautionary statements when working on or near the batteries, refer to Operation and Maintenance Manual, "Battery Service".Lockout and Tagout Procedures
Illustration 2 g02324673
Ensure that all lockout/tagout procedures for the site are followed. Illustration 2 shows some typical items used to lock or tag the power sources. These items ensure that power is not applied while the equipment is being serviced.Safety of Equipment
Circuit breakers must be installed to protect the UPS. A breaker must be installed upstream of the UPS and downstream of the UPS. The breakers must be easy to access in an emergency.
Never install the UPS near liquids or in a damp environment.
Never permit a liquid or a foreign body to