Page 10 of 18
5.0 PRE-START INSPECTION -
Before attempting to start the unit check the following:
1. Check that the electrical service matches the requirements listed in section 3.3 Electrical Service.
2. Check that the circuit breaker or fused disconnect and power cables are properly sized to meet the
machine’s amp rating.
3. Check that the unit has been installed according to the instructions in Section 3.0 Installation Instructions.
6. Check that there are no loose lines or loose wires.
6.0 Initial Start Up and Adjustment –
It is recommended that your cabinet series high purity membrane
nitrogen generator be started and adjusted initially by a qualified technician. The following instructions are
presented for your information.
CAUTION: If users readjust certain components, part or all of the
warranty may become void.
After initial start up, only minor adjustments should be necessary by the
operator.
6.1
Nitrogen System Setup
1. Remove the right upper side panel and slowly open the inlet ball valve until pressure is equalized
in the nitrogen system.
2. Listen for any air leaks. It will be normal to hear or feel gas escaping from the permeate and
compressor recirculation ports on the backside of the unit. Systems with EconoMizer™ will not
pressurize past 2-way valve until the Start button on the Operator interface is pressed. At this
time, a by-pass solenoid valve is energized to slowly pressurize the system. There is an adjusting
valve that controls how fast the system will reach pressure. Adjust valve so the system
pressurizes in 30-45 seconds.
3. If equipped with oxygen analyzer, its display should be illuminated at this time. On systems with
Heater and/or AutoPure™ Options, their displays will energize only after units reach full
pressure.
4. Press the Start button on the operator interface on the front gauge panel.
5. Adjust needle valve on re-pressurizing circuit to pressurize system between 30 & 45 Seconds
after pressing run button (units equipped with EconoMizer™)
6. The heater controller and the purity controllers should be making their self-adjustments.
7. Calibrate oxygen sensor as described in 6.2 below.
8. Observe the nitrogen membrane pressure gauge and the inlet air pressure gauge. Adjust the
membrane pressure regulator to 15 PSIG below the lowest expected supply pressure. Turn
clockwise to increase turn counterclockwise to decrease pressure.
6.2
Nitrogen Purity Sampling System Setup
1. If unit is equipped with the optional oxygen analyzer, make sure the analyzer is calibrated before
using the generated nitrogen. High purity systems utilize gases which are calibrated at a known
oxygen content to calibrate othe oxygen analyzer. The trace oxygen (PPM O2) utilizes a two
point calibration (high range and low range). The 5-way valve located under the analyzer on the
front panel allows for sensing the gas from four locations; two of which are the Calibrate High
and Low Span Gas Positions. Calibrate with the High Span first and then repeat using the Low
Span.
Note:
Valve on the Span Gas tanks should be closed when not in use to avoid loss of
contents in between calibration intervals.
2. Make sure the Purity Sampling System is properly set so that damage to the oxygen analyzer does
not occur and proper readings can be obtained.
3. There should be no valve on the discharge of the sensor. The sensor is designed to operate at or
near atmospheric pressure.
Over pressurizing can damage the sensor.
4. There are two pressure regulators on the high purity system. One is located inside the cabinet
behind the panel mounted regulator. Set the one inside the cabinet at 30-40 PSIG. Adjust the
Summary of Contents for PMNG Series
Page 18: ...Page 18 of 18 11 0 WARRANTY ...
