cleanAIR SGC4000 Maintenance Manual

SGC4000
cleanAIR
Brand
cleanAIR
Model
SGC4000
Category
Split-system air conditioners
Type
Maintenance Manual

The cleanAIR SGC4000 is a positive pressure, thermoelectrically cooled sample gas conditioner that removes condensed water from the sample gas stream without dilution or loss of sample gas pressure. It features a corrosion-resistant pump, a thermoelectrically cooled heat exchanger, and a water sump/discharge system. The SGC4000 is ideal for use in applications where it is necessary to remove water from a sample gas stream without affecting the sample gas pressure or composition.

The cleanAIR SGC4000 is a positive pressure, thermoelectrically cooled sample gas conditioner that removes condensed water from the sample gas stream without dilution or loss of sample gas pressure. It features a corrosion-resistant pump, a thermoelectrically cooled heat exchanger, and a water sump/discharge system. The SGC4000 is ideal for use in applications where it is necessary to remove water from a sample gas stream without affecting the sample gas pressure or composition.

212 N. Woodwork Lane Palatine,
IL 60067 800-223-3977
Sample Gas Conditioner – SGC4000
Sample Gas Conditioner – SGC4000
Part # 0700
Installation and Maintenance Manual
Questions? Contact us at 800-223-3977 or online at
http://www.cleanair.com/equipment/Express/main.html
Sample Gas Conditioner – SGC4000
Serial Number
Sample Gas Conditioner – SGC4000
Clean Air Engineering, Inc. ................................................................................................. 1!
IMPORTANT!!! .................................................................................................................. 2!
1.!Introduction .................................................................................................................. 5!
2.!Theory of Operation ..................................................................................................... 6!
2.1.!Positive Pressure Option: ....................................................................................... 6!
2.2.!Thermoelectric (Peltier) Coolers: .......................................................................... 6!
2.3.!Sample Gas Heat Exchanger: ................................................................................ 6!
2.3.1.!Heat Exchanger Plate: ................................................................................... 6!
2.3.2.!Water Sump/Discharge System: ..................................................................... 7!
2.4.!Thermoelectric Cooler- Power Supply: ................................................................. 7!
2.4.1.!High Temperature Manual Reset Thermostat: ............................................... 7!
2.5.!Temperature Controller ......................................................................................... 7!
Table 2-1 Clean Air Engineering Express’ Default Settings ........................................... 8!
Table 2-2 Default Operating Parameters ......................................................................... 8!
Figure 2-1 Watlow Temperature Controller – Series 965 ............................................... 9!
3.!Unpacking and Installation ......................................................................................... 10!
3.1.!Unpacking: ........................................................................................................... 10!
3.2.!Installation: .......................................................................................................... 10!
3.2.1.!Sample Gas Connection: .............................................................................. 10!
3.2.2.!Heat Exchanger Water Sump Drain Connection: ........................................ 10!
Figure 3-1 Sample Gas Conditioner Component Location ........................................... 11!
4.!Operation .................................................................................................................... 12!
4.1.!Initial Parameter Setup: ....................................................................................... 12!
4.1.1.!Sample Gas Conditioner Operational Test: ................................................. 12!
4.2.!Setting Specific Sample Gas Temperature: ......................................................... 13!
4.3.!Setting Low Power Level for Thermoelectric Cooler: ........................................ 14!
5.!Routine Maintenance and Inspection ......................................................................... 14!
5.1.!Maintenance: ....................................................................................................... 15!
5.1.1.!Optional Pressure Pump Maintenance: ............................................................. 15!
5.1.2.!Heat Exchanger Maintenance: .......................................................................... 15!
5.1.3.!Sump Drain Peristaltic Pump Maintenance: ..................................................... 16!
6.!Troubleshooting .......................................................................................................... 17!
6.1.!Troubleshooting Flow Charts: ............................................................................. 17!
Figure 6-1 Electrical Troubleshooting Flow Chart ........................................................ 18!
Figure 6-2 Temperature Troubleshooting Flow Chart .................................................. 19!
Figure 6-3 Sump Drain Troubleshooting Flow Chart ................................................... 20!
Figure 6-4 Sample Gas Outlet Troubleshooting Flow Chart ......................................... 21!
Figure 6-5 Pressure Pump Troubleshooting Flow Chart ............................................... 22!
Figure 6-6 Water Intrusion Troubleshooting Flow Chart .............................................. 23!
Appendix A ........................................................................................................................ 24!
Parts List ............................................................................................................................ 24!
Figure A-1 Sample Gas Conditioner Schematic Diagram ............................................. 25!
Figure A-2 Water Intrusion Monitor Schematic Diagram ............................................. 26!
Figure A-3 Power Supply Schematic Diagram ............................................................. 27!
1
Sample Gas Conditioner – SGC4000
Clean Air Engineering, Inc.
Clean Air Engineering designs and manufactures a variety of gas sampling
systems and source testing accessories. This include sample gas conditioners,
automatic and manually controlled flow panels, sample gas probes, and
continuous moisture monitoring systems. Our products include the following:
• Sample Gas Conditioners
• Computer Controlled and Manually Operated Flow Panels
• Sample Gas Probes
• Water Intrusion Monitors
• Continuous Moisture Monitoring Systems
Clean Air Engineering specializes in solving your environmental challenges by
offering the following services:
Mobile Emissions Source Testing Laboratory
• Analytical Services
• Diagnostic Services
• Consulting Services
• CEM System Services
• Air Toxics Testing
• Instrumental Rental
• Training Services
Call or Fax us today to find out how we can be of service to you. You can reach
us by phone at (800) 223-3977, or by Fax at (847) 991-8924
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Sample Gas Conditioner – SGC4000
IMPORTANT!!!
BEFORE YOU BEGIN READ THIS!!!
READ AND UNDERSTAND ALL INSTRUCTIONS BEFORE USING THIS
SYSTEM!
SAVE THESE INSTRUCTIONS!!!
• To Avoid Accidents…
ü Keep your work area clean and well lit.
ü Keep bystanders away.
ü Exercise common sense.
• Electrical Safety…
ü Do not operate in combustible environments.
ü DO NOT operate these products when wet or in water.
ü ALWAYS be sure that the components of this system are running with the
correct voltage (120V).
ü Never remove a grounding prong or modify a plug.
ü Do not abuse the power cord or plug. Remove by handling plug only.
• Personal Safety…
ü Stay alert and watch what you are doing.
ü Dress appropriately. Wear the appropriate personal safety devices.
ü Calibration and/or flue gases can be hazardous to human health. Be sure
that all lines are properly vented to an open area.
ü Check the system for leaks after installation.
• Equipment Maintenance…
ü Maintenance and repairs should be performed only by one of Clean Air
Express’s trained technicians.
3
Sample Gas Conditioner – SGC4000
Customer Feedback
Clean Air Engineering takes pride in our quality products and services. We strive
to provide the highest quality products and services in the industry. We realize
the importance of end user input in the continual improvement of our products
and services. Customer feedback is of paramount importance. We encourage
your feedback with any suggestions or problems that can help us improve
our performance. A customer feedback form is available online at
http://www.cleanair.com/About/feedback.html. To emphasize our commitment to
quality products and complete customer satisfaction, Clean Air Engineering’s
manufacturing division, Clean Air Engineering Express, offers what we feel is the
best and most comprehensive warranty in the environmental industry.
4
Sample Gas Conditioner – SGC4000
Safety
Safety should always be considered first, and proper safety procedures should
be followed.
Weight and Bulk
The Sample Gas Conditioner – SGC 4000 weighs approximately 30 pounds
(13.6 kg) and has dimensions of 15” x 17” x 6.5” (381mm x 431.8mm x
165.1mm). Remember to use good lifting technique in order to avoid injury. Two
persons should be utilized if necessary. Do not attempt to carry the weight
yourself if you do not feel comfortable doing so.
Pump Cleaning
When flushing the pumps, a nonflammable flushing solvent should be used.
WARNING!! Do NOT use kerosene, gasoline or any other flammable liquid
to flush the pump!! Harmful vapors can result in personal injury or damage to the
pump itself.
Electrical Shock
The system is powered by a standard 120 VAC line, meaning potentially fatal
shocks are possible. It is no more dangerous than many household appliances
in this regard; however, care must be taken to avoid shock. Before performing
any maintenance or removing the back cover, turn off and unplug the console
from the 120 VAC line. Be sure that the correct voltage is used in order to help
prevent accidents.
5
Sample Gas Conditioner – SGC4000
1. Introduction
Clean Air Engineering Express’ Sample Gas Conditioners are positive pressure,
thermoelectrically cooled conditioning units that remove condensed water from
the sample gas stream without dilution or loss of sample gas pressure to the
analyzer system.
Sample Gas entering the conditioner passes through a corrosion resistant pump
where it is compressed before entering the thermoelectrically cooled heat
exchanger. After the sample gas passes through the pump, the remainder of the
system is under positive pressure that eliminates the problems caused by
negative pressure leaks.
The heat exchanger removes water from the sample gas by condensation as it
passes through a zigzag path in a thermoelectrically cooled corrosion resistant
plate. Condensed water collects in small water sumps built into the bottom of the
heat exchanger. The entire heat exchanger is under positive pressure so the
water collected in the sumps can be discharged continuously without dilution of
the sample gas, thus allowing continuous operation.
The conditioned Sample Gas exits the unit under positive pressure allowing the
low-dew-point conditioned sample gas to be directed to any flow distribution
panel or directly to on or more instruments.
6
Sample Gas Conditioner – SGC4000
2. Theory of Operation
The theory governing the operation of a condensation type sample gas
conditioning system has been in existence for a number of years, and therefore
will not be discussed in detail. Basically, the following three areas of
consideration apply to Clean Air Engineering Express Sample Gas Conditioners:
1. Positive Pressure Sample Gas System (Optional)
2. Thermoelectric Cooling Modules
3. Flat Plate Heat Exchanger
2.1. Positive Pressure Option:
Positive pressure operation is highly desirable to eliminate changes in sample
gas concentration that may be caused by negative pressure leaks in the
sampling system. Clean Air Engineering Express can supply an optional
pressure pump, installed in the Sample Gas Conditioner for this purpose. In a
positive pressure system, any leaks that do occur are outgoing and will not cause
changes in the Sample Gas Concentration. When leaks do occur, they will be
evident by a reduction in sample gas flow rate. Any leaks that cause prohibitive
reduction in the flow rate may be easily detected by the application of bubble
solutions at the suspected location of the leak.
2.2. Thermoelectric (Peltier) Coolers:
Thermoelectric coolers provide the cooling for the single sided, flat plate sample
gas heat exchanger. The solid state, Peltier coolers are arranged on one side of
the corrosion resistant metal plate to transfer heat from the sample gas to a
finned heat sink that is cooled by fan driven forced air convection. The
temperature of the sample gas heat exchanger is controlled by a thermocouple,
temperature controller and DC power supply connected to the Peltier coolers.
2.3. Sample Gas Heat Exchanger:
The primary purpose of the heat exchanger is to lower the temperature of the
sample gas so that water vapor contained in the gas sample will be condensed,
separated and discharged from the sample gas stream, without absorbing the
sample gas.
2.3.1. Heat Exchanger Plate:
The heat exchanger plate transfers the majority of the heat contained in
vaporized water that is condensed out of the sample gas. The plate must be
capable of transferring the heat without reacting with or being corroded by the
sample gas stream, regardless of its composition. Flow channels are available in
a variety of corrosion resistant materials and are of an open channel design to
minimize scrubbing of sample gas and to prevent clogging.
7
Sample Gas Conditioner – SGC4000
2.3.2. Water Sump/Discharge System:
The water separated from the sample gas is collected in a water sump built into
the heat exchanger. This water is drained from the water sump by a Peristaltic
pump that operates continuously, so long as power is applied to the conditioner.
2.4. Thermoelectric Cooler- Power Supply:
The Thermoelectric Cooler (Peltier cells) is powered by a dual voltage power
supply, controlled by a solid-state temperature controller. When the temperature
controller calls for full power (“Heat”) pilot lamp is off. A double-pole, double-
throw relay located in the power supply is activated, causing the power supply to
deliver maximum voltage to the Peltier cells until the cold plate temperature
sensing thermocouple reaches the proper temperature. When the desired
temperature (temperature controller set point) is reached, relay contacts in the
controller open causing the relay in the power supply to open. This action lowers
the power supply voltage by connecting one of the two transformer secondary
windings (normally connected in series during maximum cooling) and also
connects a high wattage resistor in series with the full wave bridge rectifier to
provide the low voltage and current power supply output. The low power setting
is required in order to prevent freezing up the heat exchanger and still not allow
heat to transfer from the cooling fins back through the Peltier cells and into the
heat exchanger as would be the case if the power to the Peltier cells were simple
turned off.
2.4.1. High Temperature Manual Reset Thermostat:
The high temperature thermostat is mounted on the thermoelectric cooler, finned
heat sink. This device will operate to interrupt input power-to-power supply in the
event that the heat sink temperature exceeds 175°F, to provide a safeguard for
the Peltier Cells in case the cooling fan fails. In order to manually reset the high
temperature thermostat a button accessible through a hole in the thermoelectric
cooler fan shroud needs to be depressed.
2.5. Temperature Controller
The Watlow Series 965 Temperature Controller (Figure 2-1) is currently being
installed in all Sample Gas Conditioners starting with serial number PL-
005910203. This controller has been up-graded from the previous type to
provide additional features and greater reliability. The following tables show the
default setup parameters for the Watlow Series 965 Temperature Controller
(Table 2-1 and Table 2-2).
8
Sample Gas Conditioner – SGC4000
Table 2-1 Clean Air Engineering Express’ Default Settings
Set
Parameters
Clean Air Engineering Express Default Settings
LOC
3 (Set point and process temperature displayed)
In
K (Type K thermocouple selected (Displays as H))
C-F
F (Temperature displayed in °F)
rL
-99°F (Default for Type K thermocouple)
rH
200°F (Default for Type K thermocouple)
Ot1
Ht (Action in response to difference between set point and process variable)
HYS
2°F (Selects temperature control hysteresis)
AL1
No (No alarm selected)
Table 2-2 Default Operating Parameters
Operating
Parameters
Clean Air Engineering Express Default Settings
PB1
0 (Selects On/Off Control)
CAL
Set to calibrate process temperature to be the same as cooler cold plate temperature
AUT
0 (Auto-Tune off)
9
Sample Gas Conditioner – SGC4000
Figure 2-1 Watlow Temperature Controller – Series 965
10
Sample Gas Conditioner – SGC4000
3. Unpacking and Installation
3.1. Unpacking:
The Sample Gas Conditioner is shipped in a plastic bag, surrounded with
Styrofoam packing material to prevent damage, and packed in a cardboard
shipping container. To unpack, open the box and extract the unit from the
packing material.
o At this time, check each item against the packing slip and inspect for
any physical damage. Report all Physical Damage to the freight
company.
o Spare parts, optional equipment and/or manuals will be in the shipping
container along with the conditioner.
o Do not discard packing until all items on the packing slip have been
accounted for. Report all shortages to Clean Air Engineering Express.
o All claims for shortages must be reported within 10 days after receipt
of shipment.
3.2. Installation:
The Sample Gas Conditioner is contained in a single enclosure measuring 15” x
17” x 6 ½” (W x H x D). The unit is designed for bulkhead (wall) mounting in a
location protected from the weather. Ideally, this location should be close to the
emission stack. When mounting the unit, provide sufficient clearance for access
to all cover mounting screws. Electrical power required to operate the unit
should be provided using grounded duplex outlet box located within six feet of
the unit if AC Power cord installation is used. The unit requires 120 VAC - 50/60
Hz at 5A.
o Note: For maximum cooling efficiency, the Sample Gas Conditioner
should not be installed in locations where the ambient case
temperature will exceed 100°F.
3.2.1. Sample Gas Connection:
Sample gas enters the conditioner through a ¼” Nylon bulkhead Swagelok tube
fitting (sample gas inlet), located on the upper left side of the unit as shown in
Figure 3-1. Conditioned Sample Gas exits the conditioner through a second ¼”
bulkhead fitting (sample gas outlet), also located on the left side of the unit.
3.2.2. Heat Exchanger Water Sump Drain Connection:
The collected sump water is discharged through a drain fitting that exits the
conditioner case on the bottom as shown in Figure 3-1. This fitting should not be
restricted or blocked.
11
Sample Gas Conditioner – SGC4000
Figure 3-1 Sample Gas Conditioner Component Location
Sample Gas
Outlet
Sample Gas
Inlet
High Temperature
Manual Rest
Push Button
Thermoelectric Cooler
Part # 0704
Part # 0705S
Assembly
Part # 0706
Peristaltic Drain Pump
Part # 9771-BA
Heat Exchanger
Water Sump
Drain
Water Intrusion
Monitor System
Part # 0710
Sample Gas Pump
Part # 0711R
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Sample Gas Conditioner – SGC4000
4. Operation
4.1. Initial Parameter Setup:
In order for this conditioner to function as designed, the operator must
understand the consequences of various control actions. Please read Section II
Theory of Operation. The explanation will greatly assist in the initial parameter
setup.
o Note: This conditioner has been operated at Clean Air Engineering
Express’ facility for a minimum of 72 continuous hours before it was
packaged for shipment; all control functions have been tested by
Express to assure that the unit is ready for immediate use by the
customer.
4.1.1. Sample Gas Conditioner Operational Test:
o Note: The conditioner must be installed as described in Section III
before proceeding with the following instructions.
Steps
1 On Sample Gas Conditioner, Turn Main Power switch, located on the
lower left side of unit to ON
2 Verify Cooling Fan is operating
3 Verify that the Peristaltic drain pump is operating
4 Observe that PROCESS temperature and current Set Point temperature
are displayed on the digital temperature controller
5 On Temperature Controller, use Up-Down arrow keys to change Set Point
to 035°F
6 After 10 minutes have elapsed, turn PUMP POWER switch to ON
7 After an additional 10 minutes has elapsed, perform the following steps to
establish the Optimum Set Point* (OSP)
8 Using the UP-DOWN arrow keys, change the displayed Set Point
temperature to 5°F above the displayed PROCESS temperature
9 Verify that the LD indicator lamp (on the left side of the temperature
controller) cycles on and off and the displayed PROCESS temperature
remains within +-3°F of Set Point
o *Note: The Optimum Set Point (OSP) is based on three interrelated
factors;
1 The temperature of the sample gas at the conditioner’s Sample
Gas Inlet
2 Flow Rate of the Sample Gas
3 The conditioner’s Cooling Capacity
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Sample Gas Conditioner – SGC4000
4.2. Setting Specific Sample Gas Temperature:
If a specific sample gas temperature laving the conditioner is required, the
following procedure should be performed:
Steps
1 Insert a temperature reading thermocouple device in the sample gas outlet
line. A street “T” with thermocouple extending into the gas stream works
well.
2 On Temperature Controller, reset the “Set Point” to 020°F
3 Observe temperature reading on temperature reading thermocouple
device and determine that desired sample gas outlet temperature can be
obtained. If the desired temperature can be obtained, proceed to
step (4). If the desired temperature cannot be reached, the
thermoelectric cooler/heat exchanger combination does not have
sufficient power to cool the sample gas to the required temperature.
4 If the sample gas outlet gas flow rate is above the minimum required, it
can be reduced to lower the temperature.
5 If the minimum acceptable flow rate does not produce the temperature
desired, it may be advisable to install a free convection pre-cooler
consisting of 5 to 10 feet of coiled stainless steel tubing to reduce sample
gas temperature before it enters the gas conditioner sample gas inlet. If
the desired sample gas outlet temperature still cannot be obtained,
contact Clean Air Engineering Express regarding possible modifications
to achieve the desired temperature.
6 If a stable temperature at or below the desired temperature can be
achieved using the above procedures, the temperature controller Set
Point can be adjusted to the desired sample gas outlet temperature (LED
cycles ON and OFF).
o Note: Setting the Sample Gas Outlet Temperature too low may require
the cooler plate in the heat exchanger to operate below 32°F. This
will probably result in freeze up of the heat exchanger.
14
Sample Gas Conditioner – SGC4000
4.3. Setting Low Power Level for Thermoelectric Cooler:
The Thermoelectric Cooler is temperature controlled by cycling between a
maximum/minimum power applied to the Peltier cells. The minimum power
setting was adjusted for normal operation before shipment and should need no
further adjustment unless the following conditions are observed.
o If the temperature controller does not cycle between high and low
power (LED cycles ON and OFF), with LED ON at least 10% of the
time, the low power setting may require adjustment.
o Note: The ideal cycle time is 25% ON and 75% OFF with the unit
operating under normal conditions.
To adjust the low power setting perform the following procedure:
Steps
1 Disconnect power to the Sample Gas Conditioner
2 Remove cover from the conditioner and locate the adjustable power
resistor mounted above the power supply on the right side of the
conditioner.
3 Loosen screw securing the adjustment band and slide the band to
increase the resistance (Move adjustment band towards the end of the
resistor that has no wire connected).
4 Reconnect power to the conditioner and operate the conditioner under
normal gas sampling conditions.
5 Wait for temperature controller to cycle ON and OFF and observe the
ON/OFF cycle times. If not close to 25% ON and 75% OFF, repeat
steps 1 through 4.
6 When adjustment is complete disconnect power and reinstall cover.
7 Operate Sample Gas Conditioner as required.
5. Routine Maintenance and Inspection
CAUTION!! – Do NOT disassemble this product! For internal maintenance
contact Clean Air Express.
Maintenance Issues
For any other maintenance issues, concerns, or questions, please contact Clean
Air Express at (800)-223-3977. Clean Air Express can also be reached by mail
at 212 N. Woodwork Lane Palatine, IL 60067; by fax at (847)-991-8924 or on the
web at http://www.express.cleanair.com
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Sample Gas Conditioner – SGC4000
5.1. Maintenance:
Clean Air Engineering Express Series 4000 Sample Gas Conditioners are
designed for maintenance free operation for extended periods of time, however
routine preventative maintenance is recommended to insure maximum efficiency
and to avoid unexpected future problems.
5.1.1. Optional Pressure Pump Maintenance:
The pump motor, bearing assembly, and diaphragm head, should not require any
maintenance. Bearings are long life, oversized aircraft bearings, lubricated for
the life of the bearing. The pump valves can become inefficient due to particulate
buildup under the seals. It is recommended that the following maintenance be
performed at the intervals specified.
o Every Month: Disconnect Sample Gas Inlet and Outlet lines from the
conditioner and flush tap water through the pump (up to one pint),
using a squirt bottle. The rate should not exceed on half once per
minute (15 cc/min). This procedure will also assist in flushing out any
particulate buildup on the heat exchanger plate as well. Observe that
the Peristaltic drain pump functions adequately. Once the system has
been flushed and all sump water has drained, reconnect the Sample
Gas Inlet and Outlet line and resume normal operation.
o Every Six Months: Remove the pump head and disassemble.
Inspect the valves and diaphragm. Clean or replace if defective.
o Note: Replacement parts for pressure pumps are stocked and
available from Clean Air Engineering Express.
5.1.2. Heat Exchanger Maintenance:
The heat exchanger will require little or no maintenance, if the sampling probe
removes sufficient particulate from the sampling gas stream. Flushing tap water
through the unit once a month should wash the heat exchanger. Refer to
pressure pump monthly maintenance.
o Warning: Attempting to repair the heat exchanger is not
recommended. Contact Clean Air Engineering Express at (800) 223-
3977 for further instructions regarding any problems with the unit.
16
Sample Gas Conditioner – SGC4000
5.1.3. Sump Drain Peristaltic Pump Maintenance:
The pump used for this purpose is specifically designed to operate without any
attention for long periods, however Monthly inspection of the pump tubing should
be performed to insure trouble free operation. To replace the tubing, perform the
following steps:
Steps
1 Disconnect power to the pump motor
2 Disconnect the suction and discharge tubing from the pump tubing
3 Remove (4) screw retaining the pump cover
4 Remove old pump tubing and discard
5 Clean roller race, removing any particles that could damage tubing
6 Position roller bracket assembly as shown in Figure 5-1
7 Push rubbing into Inlet port, anchoring tubing in grippers (Figure 5-2)
which rotating roller bracket assembly
8 Continue to rotate roller bracket assembly, pushing tubing into roller race,
as shown in Figure 5-3
9 Finally, insert tubing intooutlet port (Figure 5-4) and replace cover
Caution: Do not run motor while changing tubing. Severe pinching of fingers
can occur.
Figure 5-1
Figure 5-2
Figure 5-3
Figure 5-4
Grippers
(Inlet Port)
Outlet Port
17
Sample Gas Conditioner – SGC4000
6. Troubleshooting
Warning: Attempting the repair of this unit by persons not familiar with the basic
of electricity, electronics, and pneumatics may be dangerous to both the person
attempting the repair, and/or the instrument system. Test will be conducted with
power removed. Electrical and Pneumatic systems operating with 120 VAC
power applied and pressures up to 30 PSIG may be present. Physical contact
with these voltages or pressures may result in damage to persons or equipment.
Clean Air Engineering Express recommends that only qualified technicians
attempt to repair this unit.
The procedures, to the best of its knowledge, will not result in damage to the unit
or to the persons repairing the unit. However, Clean Air Engineering Express
does not represent this information as being absolute or accurate under all
possible conditions. Do not assume that following the procedures presented in
this section are safe under all conditions. The technician must exercise good
judgment and safety practice when attempting any repair.
For repair of the unit, contact Clean Air Engineering Express for free consultation
regarding any problem or for shipping instructions in the event that the unit is
under warranty.
6.1. Troubleshooting Flow Charts:
The following flow charts are provided for troubleshooting and attempt to present
a “common sense” approach to solving potential causes for malfunction. It is
assumed that only qualified service personnel familiar with instrumentation,
electronic, and pneumatic systems will attempt to repair this unit.
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cleanAIR SGC4000 Maintenance Manual

SGC4000
cleanAIR
Brand
cleanAIR
Model
SGC4000
Category
Split-system air conditioners
Type
Maintenance Manual

The cleanAIR SGC4000 is a positive pressure, thermoelectrically cooled sample gas conditioner that removes condensed water from the sample gas stream without dilution or loss of sample gas pressure. It features a corrosion-resistant pump, a thermoelectrically cooled heat exchanger, and a water sump/discharge system. The SGC4000 is ideal for use in applications where it is necessary to remove water from a sample gas stream without affecting the sample gas pressure or composition.

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