Bacharach HGM300, Technical Maintenance Manual

Page 1: ...nector SECTION 4 Flow check procedure SECTION 5 Clipping fault adjustment SECTION 6 Dual loop 4 20 mA dc scrolling output SECTION 7 HGM300 voltage check Dual loop 4 20 mA dc scrolling output SECTION 8...

Page 2: ...pressure check This may be helpful in analyzing problems with the monitor HGM300 Self Test Mode The HGM300 refrigerant monitor has a built in self test mode that will test the following functions To s...

Page 3: ...ring the 4 20mA test then all lights will go out and both the HGM300 and RDM800 will return to power on green only COMMON RDM800 INDICATIONS Initial start up of the HGM300 RDM800 system TIME OUT ERROR...

Page 4: ...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...

Page 5: ...Power Line Neutral Strobe Horn Line Neutral Jumper the Neutral of the auxiliary power connector to the Common on the relay block Connect one end of strobe or horn to the NO of whichever level of alarm...

Page 6: ...the water trap If they are cracked or broken the monitor may see only 4 zones 1 Pinch off the tubing between the water trap and in line filter Go to the diagnostic screen on the RDM800 Observe the PR...

Page 7: ...ERVE PRESSURE READINGS ON THE DIAGNOSTIC SCREEN ZONE BY ZONE YOU MUST PUT A ZONE INTO ZONE HOLD THEN GO TO THE DIAGNOSTIC SCREEN AND VERFY THAT YOU ARE OBSERVING THE PROPER ZONE AT THE TOP OF THE SCRE...

Page 8: ...then go to the tubing between the solenoid assembly and the water trap and pinch it closed 3 If the pressure does not drop to the same level as the first reading the problem is in the water trap 4 If...

Page 9: ...ALARM LIGHT WILL NOW BE FLASHING PRESS THE BUTTON TO THE RIGHT THE SCREEN NOW SHOWS IN SERVICE QUIT FLASHING TWO TIMES WITHIN THREE SECONDS THE RED LIGHT WILL GO OUT ON THE HGM300 RETURN TO THE SYSTEM...

Page 10: ...voltage change to appear on the diagnostic screen due to the cycle time of the monitor from zone to zone If the clipping fault remains the reference voltage must be verified and corrected if needed L...

Page 11: ...320 which would be entered as the new LOOP2 FACTOR PLEASE NOTE THERE IS ONLY 1 LOOP FACTOR FOR ALL SAMPLING ZONES IN THE HGM300 MONITOR I E ADJUSTING ONE SAMPLING ZONE OUTPUT CHANGES ALL SAMPLING ZONE...

Page 12: ...C SECOND 15VDC Z2 15 VDC 1 RED LED POWER SUPPLY INDICATOR 5vdc NOTE Z1 Z2 Z3 POS NEG 1 ORANGE LED POWER SUPPLY INDICATOR LOCATED AFTER 1 AMP FUSES JUMPER FROM POWER SUPPLY WIRE 1 AND 2 ARE 5 V DC TO W...

Page 13: ...edged separately To do that PRESS THIS BUTTON and go to the ALARM DETAIL SCREEN STEP 4 PRESS THIS BUTTON TO ACKNOWLEDGE THIS ALARM ANY OTHER ALARMS WILL HAVE TO BE DEALT WITH IN THIS WAY TO SHUT OFF T...

Page 14: ...may occur over time in the measurement electronic circuitry I R source or I R detector This also eliminates for field calibration of the unit All measurements are temperature and pressure compensated...

Page 15: ...racy 7 All measurements are pressure and temperature compensated so that there is never a question arising from local weather or altitude issues We always provide the same information regardless of th...

Page 16: ...GM300 running the HGM300 PC software This may be convenient if HGM300 is remotely located from RDM800 See M1110AY A for procedure using PC software 4 From the RDM800 system menu press the switch that...

Page 17: ...he reading should be within 10 of the concentration indicated on the reference bottle NOTE The unit may go into a purge cycle during the test process If this happens the PPM reading will drop to appro...

Page 18: ...dated On version 1 0 software it is necessary to select the HGM Pulldown Menu and then send the setup in order to confirm the changes 5 Select the HGM Pulldown Menu and then choose the get setup item...

Page 19: ...while observing the first PPM reading 6th line from the sensor data menu This value will stabilize to typically within 5PPM of final reading IF a purge cycle interrupts the process the reading will go...

Page 20: ...up and communicating 2 Press the button to the left of HGM 1 3 When the PASSWORD screen appears enter 313 as the password 4 From the System Screen go to the RDM SET UP Screen 5 In the PASSWORD block...

Page 21: ...SS BACHARACH INC 621 Hunt Valley Circle New Kensington PA 15068 WARRANTY HIGHLIGHTS PLEASE REVIEW COMPLETE WARRANTY CONDITIONS PARTS 2 YEARS AFTER SHIPMENT FROM FACTORY UNLESS OTHERWISE NEGOTIATED DRI...