Parker Hannifin Corporation
Industrial Gas Filtration and Generation Division
Haverhill, MA
• 1-800-343-4048
Parker Zero Air Generators
Models HPZA-3500, HPZA-7000, HPZA-18000, HPZA-30000
Bulletin TI-HPZA-3500H
Power -
The Parker Zero Air Generator may be operated by a 120 VAC, 220 VAC, 230 VAC, or 240
VAC, 50/60 Hz power supply.
Main supply voltage fluctuations must be within ±10% of the
nominal main supply voltage.
The generator is shipped with a tag at the power receptacle which
specifies the factory setting of the voltage selector. For optimal performance of the generator, the
operator should set the voltage selector to match the local power supply. To change the setting on
the voltage selector, simply remove the selector/fuse drawer from the receptacle using a small
screwdriver, turn the selector so the desired voltage shows in the window, and reassemble. To
connect the generator to the power supply, simply plug the female end of the electrical cord into the
receptacle on the right side of the generator, and the opposite end into a three-pronged earthed
power receptacle.
Parker does not recommend the use of a ground fault circuit interrupter
with this unit.
Before plugging power cord into power receptacle, check the voltage selector setting. The
voltage setting must match the local power supply voltage.
(Note: “NA” versions of the
generator are designed for 120 VAC operation only.)
Piping Components -
The inlet and outlet ports for the Parker Zero Air Generator are
1/4” NPT
(female) and located on right side of the unit. Inlet tubing and fittings should be clean and rated for
125 psig (8.6 barg), minimally. The tubing and fittings used downstream from the Zero Air Generator
should be clean stainless steel or pre-cleaned refrigeration-grade copper
(1/4” O.D. x .030” wall)
and rated for 125 psig (8.6 barg).
Do not use plastic tubing downstream from the generator.
Outgassing from plastic may contaminate the zero-grade air. Use only PTFE tape on all inlet and
outlet NPT fittings. (Thread sealing com pounds may contaminate the zero air.)
If pre-cleaned copper tubing is unavailable, standard copper tubing may be cleaned by the customer.
First, connect the tubing to a supply of clean inert gas (N
2
, He). Next, initiate the gas flow through the
tubing (5-10 cc/min). Finally, heat the tubing with a propane torch, moving the flame at a rate of
approximately 1/2 in/sec in the direction of flow. This procedure removes waxes and oils used in the
manufacture of cop per tubing.
Note:
The use of plastic piping components or copper piping components which are not refrigeration
grade will result in the Zero Air Generator failing to meet purity specifications.
Drain Lines -
The
1/4” diameter plastic drain line on the right side of the generator (behind the filtration
access panel) should be piped away to an appropriate disposal container. The liquid in this drainage
will consist of water and compressor oil which should be disposed of properly.
Figure 4 - Recommended
Installation
