Gow-Mac 75-850-BV User manual

Operating Manual
Model 75-850-BV & 75-852-BV
Hydrogen Separator
with Manual Bypass Valve
Model 75-850-BV: 120 V, 50/60 Hz
Model 75-852-BV: 230 V, 50/60 Hz
September 2020
Rev. 7
READ INSTRUCTIONS
BEFORE OPERATING
277 Brodhead Road, Bethlehem, PA 18017-8600 U.S.A. Tel: [phone]

GOW-MAC Instrument Co.
2

Model 75-850-BV / 75-852-BV H2Separator w/ Manual Bypass Valve
09/20 Rev. 7
3
GOW-MAC Model 75-850-BV or 75-852-BV
Hydrogen Separator
1. Connections
 1. ConnectAIRCYLINDERtothebackoftheHydrogenSeparatoratAIRtting.
2. Using the ROTAMETER located on the front panel of the Separator, set the AIR
FLOW to the optimum setting according to the chromatogram located at the back of
thismanual.Theowofaircanrangebetween100-300ml/min.
3. Using the 1/16" VCR tubing that is supplied, connect the Separator to the Series 590
DIDGCasfollows:
THE INLET/OUTLET FITTINGS ARE VCR TYPE AND
WASHERS MUST BE USED. CHECK THE CARRIER FLOW
RATE TO BE SURE THAT NOTHING HAS CHANGED.
  a.Connectoneendofthesuppliedtubingto"FROMINST"ttinglocatedonthe
side of the Model 75-850-BV or 75-852-BV and the other end of the tubing to "TO
SEP"ttinglocatedontherearoftheGC.
  b.Connectoneendofanotherpieceofthesuppliedtubingto"TOINST"tting
located on the side of the Model 75-850-BV or 75-852-BV and the other end of
thetubingto"FROMSEP"ttinglocatedontherearoftheGC.
c. Turn BYPASS VALVE to SERIES/RUN position.

GOW-MAC Instrument Co.
4
Separator/Series 590 GC Connections
FlowDiagram
2. Settings
1. At this point, turn the H2Separator ON and set the operating temperature according
to the optimum temperature setting on the chromatogram located at the back of this
manual.Theoperatingrangeforthetemperatureisbetween85°-450°C.
a.PresseitherUP-arroworDOWN-arrowkeyuntilthedesiredtemperatureis
displayed. Refer to the chromatogram located in the back of this manual for
correcttemperature.Afewsecondsafterthetemperatureisset,thecontrollerwill
start to adjust the temperature automatically.
b. Once the temperature is reached, the H2separator is ready for use. Inject H2
samplesjustliketheywereanynormalGCinjection,followingtheinstruments’
normal operating procedures.
 c.Ifthehydrogenstartstopreventtheanalysisfrombeingperformed,lowertheair
owtoseeifthequalityoftheanalysisimproves.Ifitdoesnot,tryvaryingthe
temperature,inapproximately50°Cincrements,higherorloweruntilthereisa
reduction in the hydrogen breaking though. If the removal of the hydrogen is still
insu󰀩cientenoughtoallowforaqualitativeandquantitativeanalysis,recondition
the Separator as directed in instructions found later in this manual entitled,
" Hydrogen Breakthrough."
AIR IN
AIR FLOWMETER
WITH VA LV E
FROM
INST.
VENT
HEATED BOX
H2 SEP.
TO
INST.
5
6
4
3
1
2

Model 75-850-BV / 75-852-BV H2Separator w/ Manual Bypass Valve
09/20 Rev. 7
5
3. Controls
A.PowerSwitch/CircuitBreaker:TurnsACpowerON/OFF.
B. Temperature Controller:
WATLOW
EZ-ZONE®
EZ
°F
°C
%
1
2
3
4
5
...
...
.
.
Z
O
N
E
 C. BypassValve:AllowstheusertoconnecttheSeparatortotheSeries590DIDGC
or bypass the Separator.
4. Responding to a Displayed Message/Error Code
 Anactivemessagewillcausethedisplaytotogglebetweenthenormalsettingsandthe
active message in the upper display and [Attn]inthelowerdisplay.
 Yourresponsewilldependonthemessageandthecontrollersettings.Some
 messages,suchasRampingandTuning,indicatethataprocessisunderway.Ifthe
 messagewasgeneratedbyalatchedalarmorlimitcondition,themessagecanbe
 clearedwhentheconditionnolongerexists.Ifanalarmhassilencingenabled,itcan
be silenced.
Upper Display: In the Home
page, displays the process
value,otherwise displaysthe
value of the parameter in the
lowerdisplay.
Lower Display: Indicates
thesetpointoroutputpower
value during operation, or
the parameter whose value
appears in the upper display.
EZ Key: Enables simple, one-
touchoperationofuserdened,
repetitive activities. This key
can be programmed to do
various tasks, such as locking
the keyboard, restoring user
settings, etc.
ZONE: Indicates the controller
zone (1-9).
Advance Key: Advances
through parameter prompts.
Up and Down Keys: In the Home
page, adjusts the set point in the
lower display. In other pages,
changes the upper display to a
higherorlowervalue,orchangesa
parameter selection.
Output 1 Indicator Light: When lit
it indicates Output 1 is energized.
Temperature Units: Indicates
whetherthetemperatureisdisplayed
in Fahrenheit or Celsius.
Output 2 Indicator Light:Litwhen
Output 2 is active. This output can
beconguredasacontroloralarm
output.
% Percent Power Indicator
Light: Lightswhenthecontrolleris
displaying values as a percentage
orwhentheopen-loopsetpointis
displayed.
Innity Key: Press to back up
once level, or press and hold for
twosecondstoreturntotheHome
page. From the Home page can
clear alarms and errors if clearable.

GOW-MAC Instrument Co.
6
Push the Advance Key to display [.9nr] in the upper display and the message
source (such as [L.hi])inthelowerdisplay.
   UsetheUpandDownkeystoscrollthroughpossibleresponses,suchasClear
[CLr] or Silence [S.L].ThenpushtheAdvanceorInnitykeytoexecutetheaction.
Er. 1 - Error Input 1:Thesensorinputgeneratedavaluelowerthantheallowable
signal range. Enter a valid input.
100 - Device Error:ControllerdisplaysinternalmalfunctionmessageatPower
Up.
i. Set Point
   a.Tosetthesetpoint:turntheunit“on”andthenpushtheUporDownarrowto
adjust to the desired operating temperature.
5. Hydrogen Breakthrough
The H2Separatorisequippedwithapalladium/silveralloymembrane.Itsfunctionisto
quantitativelyremovethehydrogenbalancegasfromahydrogensampleleavingonly
the impurities in the helium carrier gas stream. After using the system for a period of
timewithhydrogen,theappearanceofahydrogenpeakwillbeseen.Thisiscaused
bythebuildupofcarbonaceousdepositsinsidethepalladiumtube.Byallowingairto
pass through the tube at operating temperature it is possible to remove this buildup and
restore the Separator to its original state.
1. Turn the BYPASS VALVE to "Bypass/Recondition" position.
 2. SettheAIRowratetotheoptimumowsettingasdirectedbythechromatogram
locatedatthebackofthismanual.Settemperatureto450°Cfor1hour.Thisburns
o󰀨anydepositsonthepalladium/silveralloymembrane.
3. Turn BYPASS VALVE to the "Series/Run" position to connect the Separator to the
GC. Purge for 15 minutes.
IT IS IMPORTANT THAT THE AIR SUPPLY USED FOR
THIS INSTRUMENT BE AT LEAST ZERO GRADE
(CONTAINING < 1PPM OF HYDROCARBONS). IMPURE
AIR CAN HELP TO CAUSE THE SEPARATOR TO NEED
RECONDITIONING MORE FREQUENTLY. ALSO
HALOGENS, ORGANOMETALS, SULFUR COMPOUNDS,
DOPING GASES AND OTHER HEAVY METALS CAN CAUSE
PLUGGING OF THE SEPARATOR TUBE AND REQUIRE
TUBE REPLACEMENT.

Model 75-850-BV / 75-852-BV H2Separator w/ Manual Bypass Valve
09/20 Rev. 7
7
6. GeneralSpecicationsfortheTemperatureController
Part Number 124-261
Control Mode: - Microprocessor-based
- Single input, dual output
       -Ramptosetpoint:0to550°
- Heat and cool auto-tune
       -PIDwithautomatictuning
Sensor Input Type: Platinum RTD, 100 ohms
Supply Voltage: 85 - 264 VAC, 50/60 Hz (75-850-BV/75-852-BV)
Mechanical Relay Life Span: 100,000 cycles
Sensor Input Type: Platinum RTD, 100 ohms
 AmbientTemperatureRange:  Operating: -18to65°C
       Storage: -40to85°C
7. SeparatorSpecications
 Operatingtemperature:  300°C
Max. Operating Pressure: 250 psig
 OperatingCarrierGasFlowRate: 30-50mL/min.
Standard Fittings: 1/8" VCR
Weight (net): 15 lbs.
Dimensions: 15-½”D x 6-½”W x 12"H
8. Waste Disposal
ThisprocedureisforGOW-MACMiniPurierPartNo.180-542(Helium)and
180-542-AR (Argon).
Ifthepurierisused,thenthegettermaterialinsidethepurierisalreadyinanon- 
reactivestate,(i.e.willnotreactwithair).
Ifthematerialisstillinareactivestate(i.e.thepurierisnotcompletely"usedup"), 
itstillwillnotsustaincombustioninairexceptattemperaturesover350°C,  
andwithacontinuedaccesstoair.
TheoperatorshouldplaceaVCRcapovertheinlet/outletttingsforsu󰀩cient 
precautionbeforedisposal.Itisthenacceptabletodepositinanapprovedlandll, 
inaccordancewithlocal,stateand/orfederalregulations.Whendisposedofinthis 
manner,thewasteposesnoknownenvironmentalproblems.

GOW-MAC Instrument Co.
8
9. Replacement Parts
Description Part No.
Fuse, 10 A (115 V)...................................................121-162
Fuse, 5 A (230 V) ....................................................121-177
Fan (115 V) .............................................................124-156
Fan (230 V) .............................................................124-162
Sensor.....................................................................124-175
Heater (115 V).........................................................124-197
Heater (230 V).........................................................124-200
Temperature Controller ...........................................124-261
 PowerCord,3conductorshielded..........................127-407
 Receptacle,powerswitchw/linelter(115V)........ 129-152-10A
 Flowmeter ...............................................................180-138
Palladium Tube, Replacement ................................180-544-VCR-3
Valve, 6-port ............................................................181-643
Contact GOW-MAC for replacement parts:
GOW-MAC Instrument Co.
277 Brodhead Road
Bethlehem, PA 18017 U.S.A.
Tel: [phone]
Fax: [phone]
  E-mail:[email protected]
  URL:www.gow-mac.com

Model 75-850-BV / 75-852-BV H2Separator w/ Manual Bypass Valve
09/20 Rev. 7
9
AIR IN
FROM
INST.
VENT
HEATED BOX
H2 SEP.
TO
INST.
5
6
4
3
1
2
VENT
INST.
TO
5
4
6
1
3
2
FROM
INST.
TO
SEP.
FROM
SEP.
AIR IN AIR IN
CW - SERIES/RUN
VENT
3
4
SEP.
FROM
CCW - BYPASS/RECONDITION
INST.
TO
5
6
INST.
FROM
SEP.
2
TO
1
AIR FLOWMETER
WITH VA LV E
R
FINISH
MATERIAL
DO NOT
NAME
SCALE
REV. NO.
CHANGENO DATE BY ANGULAR±1° ECO
FILE:
DWN.
SCALE
DATE
CHK.
TOL. UNLESS
HOLES ±.003
NOTED
.XXX ±.010
.XX ±.02
.X ±.04 INSTRUMENT CO.
277 BRODHEAD ROAD BETHLEHEM, PA 18017-8600
DWG.
FLOW DIAGRAM
75-850-BV
A-18845
1
KH
8/25/99
N.T.S.
A18845.DWG
FLOW ADJ.
110/31/07 ADDED METERING VALVE KH

GOW-MAC Instrument Co.
10

Model 75-850-BV / 75-852-BV H2Separator w/ Manual Bypass Valve
09/20 Rev. 7
11
Warranty
ALL INSTRUMENTS SOLD BY GOW-MAC®
INSTRUMENT CO. ARE WARRANTED FOR A PERIOD
OF ONE YEAR AGAINST DEFECTS IN MATERIALS AND WORKMANSHIP. THE TERMS OF THIS
WARRANTY ARE AS FOLLOWS:
1. The warranty period begins with the shipping date of the equipment to the original purchaser.
2. Certain parts such as batteries, fused, glass accessories, septa, columns, etc., are expendable in normal use,
and their service life is unpredictable. Such items are not covered by this warranty.
3. Filaments of thermal conductivity detectors are not covered by this warranty.
4. All requests for service or repair under this warranty must be received within the warranty period by
GOW-MAC®
or its authorized representative. All repairs are made at GOW-MAC plants or at the offi ce of
authorized representatives.
5. All repairs, adjustments, and other service under this warranty shall be performed free of charge to the
purchaser. However, warranty service and repairs shall be limited to equipment malfunctions which, in the
opinion of GOW-MAC®, are due or traceable to defects in original materials or workmanship. Instrument
malfunctions caused by abuse or neglect of the equipment are expressly not covered by this warranty.
6. Instrument parts which have been repaired or replaced during the warranty period are themselves warranted
only for the remaining unexpired portion of the original one year warranty.
7. Repairs, adjustments, and service performed after expiration of the one year warranty period shall be charged
to the purchaser at the then current prices for parts, labor, and transportation.
8. This warranty attaches to the equipment itself and is not limited to the original purchaser. Unexpired portions
of the warranty are thus transferable to subsequent owners.
9. GOW-MAC®expressly disclaims any liability to users of its products for consequential damages of any
kind arising out of or connected with the use of its products.
10. Except as stated in Sections 1 through 8 above, GOW-MAC®makes no warranty, expressed or implied
(either in fact or by operation of law), statutory or otherwise; and, except as stated in Sections 1 through 8
above, GOW-MAC®shall have no liability under any warranty, expressed or implied (either in fact or by
operation of law), statutory or otherwise.
11. Statements made by any person, including representatives of GOW-MAC®which are inconsistent or in
confl ict with the terms of this warranty shall not be binding upon GOW-MAC® unless reduced to writing
and approved by an offi cer of the Company.
12. This warranty shall be governed by the laws of the Commonwealth of Pennsylvania.

GOW-MAC Instrument Co.
12

Model 75-850-BV / 75-852-BV H2Separator w/ Manual Bypass Valve
09/20 Rev. 7
13
277 Brodhead Road, Bethlehem, PA 18017 U.S.A. Tel: [phone] Fax: [phone] E-mail: [e-mail] URL: www.gow-mac.com
REP-005
Health-Safety Declaration Doc REV 6 (0212).docx
Rev. 6 2/15/2012, gsj
Health and Safety Declaration for the Return of GOW-MAC Instrument Co. Equipment
In order to protect our employees from exposure to various hazards, the
following statements and/or questions MUST be answered by you.Fill out this
document in its entirety and either fax or e-mail it to GOW-MAC Instrument
Co., Attn: Repair Dept, BEFORE returning the product.
The instrument/device/part being returned will not be accepted into
GOW-MAC’s facility until we receive this completed document.Once the
product has been approved for return by our Chemical Safety Officer, an
acknowledgement will be promptly issued to you with notification of your
Return Materials Authorization (RMA) number and the procedure to follow
for returning the product.All applicable regulations should be followed when
returning instrumentation, devices, and or parts.
If this form is not approved by our chemical safety officer, the instrument/device/part
WILL NOT be permitted into our facility for servicing!
A] Briefly list the application(s) for which the instrument/device/part was used, as well as any and all chemicals, gases, and/or materials
analyzed and their concentrations. (MUST be filled in): ________________________________________________________________
____________________________________________________________________________________________________________
B] Is there the possibility of internal or external contamination on or in this instrument/device/part?
 Yes –see below  No –proceed to C.
Please check the appropriate box.
 Chemicals or Substances That Are Hazardous to Health
 Blood, Body Fluids, (e.g. Urine, Secretions), Pathological Specimens
 Regulated Medical Wastes
 Infectious Substances or other Bio-Agents (e.g. Protein, Enzymes, Antibodies)
 Radioactive Isotopes used in the area. Detail type (ECD, Isotopic Labels, etc) and Activity in Micro Curies
 Biodegradable Material That Could Become Hazardous
 Other Hazards ____________________________________________________________________________________________
If any of the above boxes are checked the following statements and/or questions must be answered.
1. Specifically describe where (on or in) the instrument/device/part there could be any residual contamination (for example: blood spill
on the surface).____________________________________________________________________________________________
________________________________________________________________________________________________________
2. Provide details of these hazards. Include names, Material Safety Data Sheets (MSDS), and concentration of contaminants, where
possible. ________________________________________________________________________________________________
________________________________________________________________________________________________________
3. Describe the method of decontamination used. Attach Procedure.____________________________________________________
________________________________________________________________________________________________________
C] I declare that the above information is true and complete to the best of my knowledge. I acknowledge that any inconsistencies between
the condition of the instrument and the statements made on this form will delay the repair process.
Authorized signature _________________________________________________ Date: ____________________________________
Name (Printed) ______________________________________________________ Phone number: ____________________________
Company name: ____________________________________________________ Fax number: ______________________________
Shipping address: _____________________________________________________________________________________________
City: _________________________________________ State/Country: _______________________ Zip :_______________________
E-mail address: ______________________________________________________________________________________________
BEFORE item can be shipped,fax completed form to: [phone] or e-mail it to: [e-mail]
Customer to Record the Following:
Model # / Part #: ___________________
Serial #: ___________________
Service Technician spokento: ___________________
Today’s Date: ___________________
For GOW-MAC Use Only:Signed: ________Date ____/____/____
□ Passed Safety Inspection. OK to proceed to Repair Dept. Chem. Safety Off. Comments:( ) None
□ Failed Safety Inspection. DO NOT proceed to Repair Dept. RMA No: __________________ ( ) On Back >>>>

GOW-MAC Instrument Co.
14