EXAIR 7960 Maintenance and service guide

LIT 7120
©2016 EXAIR Corporation 4/25/16
HIGH VOLTAGE POWER SUPPLY INSTALLATION & MAINTENANCE
Model 7960
ELECTRICAL SUPPLY
The Model 7960 Power Supply requires a 115V, 50/60Hz or 230V, 50/60Hz power source. The voltage selector switch
must be in correct position before turning the power on to the unit. If the correct voltage is not selected, the fuse will
break when the power is turned on.
The Model 7960 comes with (2) removable power cords that use an IEC C13 connection to plug into the back of the
power supply. One of the cords uses a NEMA 5 plug that must plugged into a grounded outlet. If it is not grounded
properly, it will produce a shock and will not work properly. The other cord has a green or green with yellow trace
ground wire, a bare shielding ground wire, a blue return wire and a brown live/hot wire. The shielding ground wire and
green with yellow trace or green wire must be bonded together before installing into a plug to insure proper shielding is
in place. Failure to do this may cause interference with other electrical appliances. Additional grounding can be
obtained by attaching a ground wire between a grounded metal surface and the grounding terminal of the power supply.
MOUNTING
Mounting flanges are provided at the base of each power supply. The power supply can be bolted to the machine frame
for uniform grounding. If grounding cannot be obtained through the machine, it is best to connect to earth ground
through a grounding rod or copper cold water system.
11510 Goldcoast Drive ▪Cincinnati, OH, USA 45249-1621
[phone] ▪FAX [phone] ▪E-mail: [email protected]m
SPECIFICATIONS
Model 7960:
Input Voltage: 115VAC / 230VAC
Input Current: .2 A / .1 A max.
Frequency: 50/60 Hz
Output Voltage: 5,000 V rms
Output Current: 5 mA max.
Max High Voltage Cable Length: 100ft (30.48 meters)
The Power Supply Should Not Be Used In An Explosive Or Flammable Area.

LIT 7120
©2016 EXAIR Corporation 4/25/16
HIGH VOLTAGE TERMINALS
Each power supply includes two high voltage outlets. With the power cord disconnected, connect the ionizer to the
high voltage power supply terminal. Simply insert the stainless steel contact into the terminal cavity, then tighten the
swivel hex fitting. Do not overtighten, but make sure the hex fitting is snug against the power supply terminal. This
spring loaded connector grips the mating stainless steel terminal for a snug connection. When disconnecting an ionizer,
it is important to first disconnect the power. Loosen the swivel hex fitting, and pull the knob away from the power
supply with minimal force. The stainless steel contact will snap loose from the connector spring.
With the high voltage connections made, connect the power cord of the power supply to an appropriate source. To
operate the power supply, there is a lighted “on/off” switch on the back of the power supply. The “on” light indicates
power to the primary of the power supply. Do not apply power until grounding and high voltage connections are
complete.
TROUBLESHOOTING AND MAINTENANCE
EXAIR Power Supplies have replaceable fuses and power switches. All other parts are completely potted inside the
power supply box. There are no internal adjustments. There is no maintenance required.
If the static eliminator is not functioning properly, turn the power supply off and check that the high voltage and
ground connections are secure. Check the ionizer to insure that the point(s) are not contaminated with dirt or shorted. If
this does not fix the problem, turn the power off and check if the fuse is broken. The fuse is located above the power
cord receptacle on the back of the power supply. Make note of the fuse rating on the power supply label.
To check for ionization, use of a static meter (Model 7905) is required. Measure the static charge on the surface of
some material. Pass the ionizer over the material. Measure the static charge on the material. If the charge is lower than
the original measurement, the ionizer and power supply are working. If there is no change, contact the factory.
It is recommended that only qualified service personnel perform tests on this high voltage power supply or hazardous
shock could result.
If there are further questions regarding the
operation of the power supply or static eliminator
equipment or if you have any questions or problems,
please contact an EXAIR Application Engineer at:
Toll Free: 1-800-903-9247 (U.S. & Canada)
Telephone: [phone] outside of U.S. & Canada
Toll Free Fax: [phone] (U.S. & Canada)
FAX: [phone] outside of U.S. & Canada
E-mail: [email protected]
Website: www.exair.com
EXAIR Model 7960 Power Supply is UL
Component Recognized to U.S. and Canadian
safety standards and meet the requirements
of applicable European Directive(s).