About CPrince

Issue Does the DS284IS or D273IS photo smoke detector have a fixed temp heat sensor or rate of rise heat sensor built in? Solution The D273IS and the DS284IS are both photo electric smokes with a 135° Fixed temperature heat sensor. *On both models, the heat sensors are isolated, this means that a heat alarm will provide a separate alarm output through one set of contacts and smoke alarm will provide an alarm output through a  second set of alarm output contacts, either smoke or heat alarm will activate the sounder circuit differently. Heat Alarm is a Steady output from the sounder and the Smoke Alarm will produce a Pulsing sounder output. These detectors also take separate power, which requires a D275 EOL. Sounder Function The sounder acts differently depending on what test is preformed. When sprayed using canned smoke the sounder pulseson a smoke alarm output trips. When tested using a magnet the sounder is steady and trips the isolated heat output. When tested using a heat gun the sounder is steady and trips the isolated heat output. *After the unit is placed in alarm using canned smoke, the sounder and latched LED will clear on its own when the chamber is free of smoke. 10-30 VDC Standby - 80uA @ 12 volts 100uA max Alarm - 100mA +or- 10mA @ 30 VDC Part numbers DS284IS, D273IS ... View more

Issue How to place a letter in the account number. Solution When editing the account number press the following keys to place letters in the place of numbers. Test 1 - A Test 2 - B Test 3 - C Test 4 - D Test 5 - E Test 6 - F Part numbers FPD-7024, D7024, DS9400, DS9400I, DS9400M, DS9447, DS9436, D7033, D7036, FMR-7033 ... View more

Question   What should the meter reading be when testing the sensitivity of a Bosch smoke detector using the D1005 test cable?   Answer   Using a Digital Volt Meter (DVM) The meter reading will be one-half of the detector's current sensitivity and the rated sensitivity range should be between 2.1Vdc and 3.9Vdc. Therefore a proper reading is between 1.05Vdc and 1.95Vdc. When available, connect the D1005 Test cable into the detector’s voltage calibration pins. Connect the negative meter lead to the D1005 black wire. Connect the positive meter lead to the D1005 red wire, note the D1005 white wire is not used. A meter may also be used by connecting the positive meter lead to the center calibration voltage pin and the negative lead to either outside calibration voltage pin. The voltage measured equals half the sensitivity (in %/ft obscuration) of the smoke detector. An acceptable reading is between 1.05Vdc and 1.95Vdc with 1.5Vdc being perfect. This applies to the following part numbers: D1005, DS250, MX250, D7050, D7050TH, D285, D7050DH, D263THS, D273, D273ES, DS260, DS282, DS282-CR, DS284, DS284-CR, DS284ES, DS250TH, DS250DH, DS282TH, DS282THS, DS282THC, DS284TH, DS284THS, DS284THR, DS284THSR, DS284THCS, DS284THC, DS284IS, DS284THES, MX250, MX250TH, D286, D263TH, D263THS, D263THC, D273THR, D273THSR, D273THC, D273THCS, D273THE, D273THS, D273TH, D273IS, MX250DH, MX280, MX280TH ... View more

Issue How does the D380 CO detector indicate presence of CO, and what test functions are available? Solution D380 LED indicates Green - Normal Red - Danger Level Has a Push button that performs Detector Test 2. Reset Unit Part Number D380 ... View more

 Issue The D192C, when faulted, is not creating a short between common and supervised zone when testing with a multi-meter.  Solution Test using voltage, not Ohms. In order to test this properly, place the multi-meter on DC voltage and the meter leads accross terminal 2 and 3 on the D192C or G card. Create a trouble on the card (place the disconnect switch to the silence mode). Use the voltage ranges that are labled on the panel's metal cover. NOTE: The D192C or G card only needs one panel common and there should also be a 1K resistor accross terminal 2 and 3 (common and supervised zone). OPEN: 3.7-5.0 VDC NORMAL: 2.0-3.0 VDC SHORT: 0.0-1.3 VDC     Part numbers D192C, D192G ... View more