EXAIR 7961 Installation & Maintenance

11510 Goldcoast Drive ▪ Cincinnati, OH, USA 45249-1621
(513) 671-3322 ▪ FAX (513) 671-3363 ▪ E-mail: techelp@exair.com
HIGH VOLTAGE GEN4 POWER SUPPLY INSTALLATION & MAINTENANCE

SPECIFICATIONS

Model 7961:
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 Gen4 Power Supply Should Not Be Used In An Explosive Or Flammable Area.

ELECTRICAL SUPPLY

The Model 7961 Gen4 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 blow when the power is turned on.
The Model 7961 comes with (2) 6 foot long 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 be plugged into a grounded outlet. If the
power supply is not grounded properly, the connected equipment 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 a plug to insure proper shielding is in place. Failure to do this may cause interference with other
electrical appliances. Additional grounding/bonding can be obtained by attaching a ground wire between a grounded
metal surface in the application 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.

HIGH VOLTAGE TERMINALS

The Model 7961 Gen4 Power Supply includes four high voltage outlets. With the power cord disconnected, connect the
high voltage ionizer cables to the high voltage power supply terminals. Insert the stainless bayonet connector into the
terminal cavity, then tighten the swivel hex fitting. Do not overtighten, but make sure the hex fitting is finger tight
against the power supply terminal. A 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 out from the power supply with minimal force.
Model 7961 Gen4 Power Supply
LIT 7121
©2018 EXAIR Corporation 2/1/18