M550221-01 Rev U  v 
IMPORTANT SAFETY INSTRUCTIONS   
 
Before applying power to the system, verify that your product is configured properly for 
your particular application. 
 
WARNING! 
Hazardous voltages might be present when covers are removed. Qualified 
personnel must use extreme caution when servicing this equipment.  Circuitry, 
test points, and output voltages might be floating with respect to chassis 
ground. Do not touch electrical circuits, and use appropriately rated test 
equipment. A safety ground wire must be connected from the chassis to the 
AC mains input when servicing this equipment. 
WARNING! 
This equipment contains ESD sensitive input/output connection ports. When 
installing equipment, follow ESD safety procedures. Electrostatic discharges 
might cause damage to the equipment. 
 
Only qualified personnel, who understand and deal with attendant hazards in power 
supplies, are allowed to perform installation and servicing.  
Ensure that the AC mains input ground is connected properly to the chassis safety 
ground connection. Similarly, other power ground lines, including those to application 
and maintenance equipment, must be grounded properly for both personnel and 
equipment safety. Always ensure that facility AC mains input is de-energized prior to 
connecting or disconnecting any cable. 
In normal operation from the front panel, the operator does not have access to 
hazardous voltages within the chassis. However, depending on the application 
configuration, HIGH VOLTAGES HAZARDOUS TO HUMAN SAFETY might be 
normally generated on the output terminals. The user must ensure that the output power 
lines are labeled properly as to the safety hazards and that any possibility for inadvertent 
contact with hazardous voltages is eliminated. 
Guard against risks of electrical shock during open cover checks by not touching any 
portion of the electrical circuits. Even when power is off, capacitors may retain an 
electrical charge. Use safety glasses during open cover checks to avoid personal injury 
by any sudden component failure. 
Neither AMETEK Programmable Power Inc., San Diego, California, USA, nor any of the 
subsidiary sales organizations can accept any responsibility for personnel, material or 
inconsequential injury, loss or damage that results from improper use of the equipment 
and accessories.