Chassis NIII_Z_3: Clean Chassis and Check Presence of Grease on Chassis - MTZ Basic Standard Maintenance Procedures

DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH Apply appropriate personal protective equipment (PPE) and follow safe electrical work practices. See NFPA 70E, CSA Z462, NOM 029-STPS, or local equivalent. This equipment must only be installed and serviced by qualified electrical personnel. Unless specified otherwise in the maintenance procedures, all operations (inspection, test, and preventive maintenance) must be carried out with the device, the chassis, and the auxiliary circuits de-energized. Check that the device and the chassis are de-energized on the upstream and downstream terminals. Always use a properly rated voltage sensing device to confirm that the device, the chassis, and the auxiliary circuits are de-energized. Install safety barriers and display a danger sign. During the tests, it is strictly forbidden for anyone to touch the device, the chassis, or the conductors while voltage is applied. Before turning on power to this equipment, check that all connections are made with the correct tightening torque and the device is open (OFF position). Before turning on power to this equipment, put all devices, doors, and covers back in place. Before turning on power to this equipment, beware of potential hazards and carefully inspect the work area for tools and objects that may have been left inside the equipment. Failure to follow these instructions will result in death or serious injury.

DANGER

HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH

Apply appropriate personal protective equipment (PPE) and follow safe electrical work practices. See NFPA 70E, CSA Z462, NOM 029-STPS, or local equivalent.
This equipment must only be installed and serviced by qualified electrical personnel.
Unless specified otherwise in the maintenance procedures, all operations (inspection, test, and preventive maintenance) must be carried out with the device, the chassis, and the auxiliary circuits de-energized.
Check that the device and the chassis are de-energized on the upstream and downstream terminals.
Always use a properly rated voltage sensing device to confirm that the device, the chassis, and the auxiliary circuits are de-energized.
Install safety barriers and display a danger sign.
During the tests, it is strictly forbidden for anyone to touch the device, the chassis, or the conductors while voltage is applied.
Before turning on power to this equipment, check that all connections are made with the correct tightening torque and the device is open (OFF position).
Before turning on power to this equipment, put all devices, doors, and covers back in place.
Before turning on power to this equipment, beware of potential hazards and carefully inspect the work area for tools and objects that may have been left inside the equipment.

Failure to follow these instructions will result in death or serious injury.

DANGER
HAZARD OF DEVICE FALLING Be sure that lifting equipment has lifting capacity for the device being lifted. Follow manufacturer’s instructions for use of lifting equipment. Wear hard hat, safety shoes, and heavy gloves. Failure to follow these instructions will result in death or serious injury.

Procedure characteristics	Description
Action	Check cleanliness of internal parts of the chassis (no dust) and presence of grease. If necessary, spread the grease uniformly across the mechanical parts of the chassis.
Goal	Verify the smooth mechanical racking-in and racking-out of the device.
Frequency	Refer to Recommended Frequency for the Intermediate End-User Maintenance Program.
Special indications	–
Necessary tools	Vacuum cleaner Small paintbrush
Related documents	MasterPacT MTZ1 - IEC Switch-Disconnectors and Circuit Breakers with MicroLogic X Control Unit - User Guide MasterPacT MTZ2/MTZ3 - IEC Switch-Disconnectors and Circuit Breakers with MicroLogic X Control Unit - User Guide

The device must comply with the conditions specified below. Refer to the MasterPacT MTZ User Guides to find instructions for operating the device.

Device installation type	Position of poles	Mechanism	Device position in the chassis
Fixed	N/A	N/A	N/A
Drawout	Open	Discharged	Removed from chassis

DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH The chassis must be de-energized on the upstream and downstream terminals. Always use a properly rated voltage sensing device to confirm that the chassis and the auxiliary circuits are de-energized. Failure to follow these instructions will result in death or serious injury.

Check cleanliness of the internal parts of the chassis. In presence of dust, use a vacuum cleaner to remove it.

NOTICE
HAZARD OF EQUIPMENT DAMAGE Do not use pressurized cleaning products or products containing solvents (trichloroethane or trichloroethylene) such as WD40. Failure to follow these instructions can result in equipment damage.

Step	Action	Corrective action
1	Check the color and texture of grease. See parts indicated in the corresponding illustrations for MasterPacT MTZ1 or MasterPacT MTZ2/MTZ3. NOTE: Dust mixed with grease can be abrasive and can lead to premature wear of mechanisms. Dust mixed with grease can increase mechanical friction and blocking moving parts.	If there is a change in grease (for example, grease is dirty or hardened on the mechanical parts of the chassis), contact your Schneider Electric Services representative.
2	Check if the grease on the mechanical parts is applied uniformly on the whole zone concerned. See parts indicated in the corresponding illustrations for MasterPacT MTZ1 or MasterPacT MTZ2/MTZ3. NOTE: Too much grease impacts negatively on the device operation. Absence of grease increases racking forces and leads to blocking moving parts.	If there is excessive grease, spread the grease uniformly across the zone with a small paintbrush. If there is no grease, contact your Schneider Electric Services representative.

Check grease points on the right and left hand-side of the chassis as indicated on the zones identified in these illustrations.

Check grease points symmetrically on the right and left hand-side of the chassis as indicated on the zones identified in these illustrations.