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Bacharach RDM800 - page 1
HGM300/RDM800 PREVENTATIVE MA INTENANCE AND TECHNICAL SUPPORT SECTION 1 – HGM300 CPU reset, RDM800 CPU rese t, WARM UP notes and HGM300 Self Test SECTION 2 - HGM300/RDM800 Mechanical Room layout SECTION 3 – HGM300 Relay Connector SECTION 4 – Flow check procedure SECTION 5 – Clipping fault adjustment SECTION 6 – Dual loop 4-20 mA dc scroll ...
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Bacharach RDM800 - page 2
SECTION 1 HGM300 / RDM800 TECHNICAL SUPPORT NOTES HGM300 CPU RESET Locate the white button m arked “CPU re set” on the main HGM30 0 board (about t he center of the m ain board). Locate the second reset button to th e left of the CPU reset bu tton . Hold the left button in, press and release the CPU reset button. There will be 5 beeps (beep/b ee ...
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Bacharach RDM800 - page 3
valve check starts at zone 16 and works down to th e purge solenoid. A four zone m onitor there is a ten seconds of silence before the valves start to click. All lights on the HGM300 go out. The Yellow light on the RDM800 will come on after a few moments (Time out error). Each light in succession (Green, Yellow and Red) will come on. ? ...
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Bacharach RDM800 - page 4
SECTION 2 HGM300/RDM800 Refrigerant Gas leak monitor mechanical room placement Sample Inlet Pickup Points Chiller RDM800 Remote Display Module Outside Hallway Machine Room Exhaust Fan Aux. Horn/Strobe Remote Alarm Sample Inlet Pickup Point HGM300 Halogen Gas Monitor Rev 3/2/0 9 4 ...
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Bacharach RDM800 - page 5
SECTION 3 HGM300 Relay Connector Rela y #1 COMMON NO NC Rela y #2 COMMON NO NC Rela y #3 COMMON NO NC Rela y #4 COMMON NO NC Alarm Alarm Alarm 1 2 3 Fault Aux. Power Main Power Line Neutral Strobe Horn Line Neutral Jumper the ‘Neutral’ of the auxilia ry power connector to the ‘Com mon’ on the relay block. Connect one end of strobe or horn t ...
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Bacharach RDM800 - page 6
SECTION 4 NO FLOW CHECK PROCEDURE NO FLOW ZONE Check f or air sample t ube blockage. NO FLOW PURGE Check for blockage o f purge line. Verify that the purge line do e s no t exceed 100’ in length. NO FLOW ZONE AND NO FLOW PURGE Check the water trap. If full of water, drain and re-secure the petcock. If there is no water in the trap, check for a b ...
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Bacharach RDM800 - page 7
ADDITIONAL NOTES ON “NO FL OW” PROBLEMS (THE FLOW RATE OF THE PUMP IS 2L/MIN) A DIFFERENCE OF LESS THEN 0.1 PSIA BETWEEN AMBIENT AND PRESSURE WILL CAUSE A “ N0 FLOW” FAULT. A VACUUM OF 0.7 PSIA OR LESS BELOW PR ESSURE WILL CAUSE A “N0 FLOW” FAULT. TO OBSERVE PRESSURE READINGS ON THE D IAGNOSTIC SCREEN ZONE BY ZONE, YOU MUST PUT A ZONE I ...
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Bacharach RDM800 - page 8
NO FLOW PROBLEMS 1) – Pinch off the tubing between the water trap and internal filter. Go to the diagnostic screen on th e RDM800. Observe the “PRES”, “ VAC” AND “AMB ” r eadings at the bottom of the screen. b) – If the pressure does n ot drop to n ormal vacuum levels (about 2 PSIA bel ow pressure readin g) the problem is in one of ...
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Bacharach RDM800 - page 9
HOW TO FORCE T AKING NEW PRE SSURE READINGS FROM THE SYSTEM SCREEN SELECT THE HGM300 THAT NEEDS A NEW PRESSURE READING AND PRESS THE BUTTON T O THE LEFT OF THAT HGM 300. THIS WILL TAKE YOU TO THE HGM SETUP SCREEN. ON THE BOTTOM RIGHT SIDE OF THIS SCREEN PRESS THE BUTTON TO THE RIGH T OF “SERVI CE MODE ENTRY” TWO TIME S WIT HI N T HREE SECONDS. ...
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Bacharach RDM800 - page 10
SECTION 5 Clipping Fault Adjustment Locate R-34 Gain adjust potenti ometer. Adjust DETECTOR voltage using the Diagnostic screen until the voltage is 4.24 volts. If the reference volta ge is prop erly set, the clipping fault will go away after the unit samples the next zone. Note - It may take several minutes for a voltage change to appear on the di ...
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Bacharach RDM800 - page 11
HGM300 Refrigerant Gas Leak Monitor Dual Loop 4 to 20 mAdc Scrolling Output Converting 4 to 20 mAdc to 1 to 5 V dc Output Loop #1 indicates the sample zone number; i.e. 5 mAdc = Zone #1 … 20 mAdc = Zone #16. The output of Loop #1 will be fixed by the number of sampling zone solenoid blocks attached to the main board. The exception to th is rule i ...
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Bacharach RDM800 - page 12
SECTION 7 Red Blinki ng LED Indicates Com munication Functioni ng Connector J9 Pin (-) 1 to Pin 10 (+) +5 volts DC (Comm unication voltage ) Pin (-) 1 to Pin 8 (+) -15 volts DC Pin (-) 1 to Pin 9 (+) +15 volts DC (Bench volta ges) HGM300 Voltage Check Z1 Voltage +5VDC 2 RED LEDS POWER SUPPLY INDICATORS TOP +15 VDC SECOND -15VDC Z2 + 15 VDC 1 RED LE ...
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Bacharach RDM800 - page 13
HOW TO: SILENCE ALARMS on the HGM300 SECTION 8 THERE ARE 4 STEPS: STEP #1: Start at this screen, the “SYSTEM SCREEN”. STEP #2: PRESS THIS BUTTON, which will take you to the “ALARM SUMMARY SCREEN”. STEP #3: Each alarm must be acknowledged separately. To do that PRESS THIS BUTTON and go to the “ALARM DETAIL SCREEN”. STEP #4: PRESS THIS BU ...
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Bacharach RDM800 - page 14
HGM300 Refrigerant Gas Leak Monitor NDIR Bench Measurement Description Pyroelectric Detector S a m p l e F l o w NDIR Source Dual Optical Bandwidth Filters Gas passing through the bench absorbs some I-R ener gy. Each of the 24 gasses in the onboard library has a very specific absorption sign ature defining the am ount of energy any of these gasses ...
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Bacharach RDM800 - page 15
5.) Auto zeroing or purging has other benefits. We di sc ussed how it’s used to provide a zero b ase for comparison to the sample measurement. This, al so, allows us to monitor and compensate for changes in I-R drive circuitry, source, bench, detector, and other electronic components. Again this all adds to long-term reliability and accuracy. 6.) ...
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Bacharach RDM800 - page 16
SECTION 10A M1110AX-A Testing HGM300 Monitors Using Gas Verification Kits SCOPE This procedure describes the steps necessary to use the gas verification kits, to verify operation of an HGM300. MATERIALS USED • Reference Gas • Variable Flow regulator • HGM 300 Refrigerant Monitor • RDM 800 PROCEDURE 1. If HGM300 and RDM800 are connected, ope ...
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Bacharach RDM800 - page 17
8. Verify that the unit is not in a purge cycle. This can be done by verifying a flow of air into zone 1. Read the (PRES) reading in the diagnostic screen (write down reading). 9. Connect the tubing from Reference Gas regulator to Zone 1 on the manifold of HGM 300. Note: The Fault light on HGM300 may illuminate until gas starts to flow from the ref ...
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Bacharach RDM800 - page 18
SECTION 10B M1110AY-A Testing HGM300 Monitors Using Ga s Verification Kit and PC Software SCOPE This Procedure describes the use of gas veri fication kits with the HGM300 PC software. MATERIALS USED • Reference Gas • Variable Flow Regulator • HGM300 Refrigerant Monitor • HGM300 PC Software PROCEDURE 1. Power up HGM300, the green led on the ...
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Bacharach RDM800 - page 19
9. Connect the tubing from the reference Gas re gulator to Zone 1on the manifold of HGM300. NOTE: Fault light on HGM300 may illuminate until gas starts to flow from the reference bottle. Press the enter key from keyboard the sensor readings will update indicated by a beep sound from the HGM300. The pressure should be below the original readings, if ...
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Bacharach RDM800 - page 20
SECTION 11 TO ENTER A SYSTEM PASSWORD PR OTECTED OR CHANGE A PASSWORD 1) The system must be up and communicating. 2) Press the button to the left of “HGM# 1”. 3) When the “PASSWORD” screen appe ars enter “313” as the password. 4) From the System Screen, go to the RDM SET UP Screen. 5) In the “PASSWORD” block, enter “000” or a ne ...
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Bacharach RDM800 - page 21
SECTION 12 WHOM TO CALL AT THE FACTORY FOR REFRIGERANT GAS LEAK MONITOR ASSISTANCE CONTACT: PETER PAPE PHONE NUMBER: 770-486-8219 FAX NUMBER: 770-486-8222 E-MAIL: peterp@MyBacharach.com Bacharach, Inc.,help@MyBacharach.com SHIPPING ADDRESS: BACHARACH, INC. 621 Hunt Valley Circle New Kensington, PA 15068 WARRANTY HIGHLIGHTS ¾ PLEASE REVIEW COMPLETE ...
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