Instruction 1509-9000 Operation Manual Rev.
Comfort Chek 400 Operation Manual ii 1509-9000 Rev 4
Comfort Chek 400 Operation Manual TABLE OF CONTENTS Important Note............................................................................................................ iv Warranty Policy .......................................................................................................... iv Service Policy ..............................................................................................................v Notices ........................................................................
Comfort Chek 400 Operation Manual IMPORTANT NOTE READ AND UNDERSTAND THIS MANUAL PRIOR TO USING THIS INSTRUMENT. CAREFULLY READ THE WARRANTY POLICY, SERVICE POLICY, NOTICES, DISCLAIMERS AND REVISIONS ON THE FOLLOWING PAGES. THIS INSTRUMENT SHOULD BE INSPECTED AND CALIBRATED REGULARLY BY A QUALIFIED AND TRAINED TECHNICIAN. THIS INSTRUMENT HAS NOT BEEN DESIGNED TO BE INTRINSICALLY SAFE IN HAZARDOUS OR EXPLOSION-RATED ENVIRONMENTS. FOR YOUR SAFETY, DO NOT USE IT IN AREAS CLASSIFIED AS HAZARDOUS AREAS (E.G.
Comfort Chek 400 Operation Manual SERVICE POLICY BACHARACH, INC. MAINTAINS AN INSTRUMENT SERVICE FACILITY AT THE FACTORY. SOME BACHARACH DISTRIBUTORS/AGENTS MAY ALSO HAVE REPAIR FACILITIES, HOWEVER, BACHARACH ASSUMES NO LIABILITY FOR SERVICE PERFORMED BY ANYONE OTHER THAN BACHARACH PERSONNEL. REPAIRS ARE WARRANTED FOR 90 DAYS AFTER DATE OF SHIPMENT (SENSORS, PUMPS, FILTERS AND BATTERIES HAVE INDIVIDUAL WARRANTIES).
Comfort Chek 400 Operation Manual DISCLAIMER UNDER NO CIRCUMSTANCES WILL BACHARACH, INC. BE LIABLE FOR ANY CLAIMS, LOSSES, OR DAMAGES RESULTING FROM OR ARISING OUT OF THE REPAIR OR MODIFICATION OF THIS EQUIPMENT BY A PARTY OTHER THAN BACHARACH SERVICE TECHNICIANS, OR BY OPERATION OR USE OF THE EQUIPMENT OTHER THAN IN ACCORDANCE WITH THE PRINTED INSTRUCTIONS CONTAINED WITHIN THIS MANUAL OR IF THE EQUIPMENT HAS BEEN IMPROPERLY MAINTAINED OR SUBJECTED TO NEGLECT OR ACCIDENT.
Comfort Chek 400 Operation Manual 1. OVERVIEW 1.1. Welcome Thank you for purchasing the Comfort Chek 400 indoor environmental quality monitor. The Comfort Chek 400 is an easyto-use, portable device for monitoring indoor air quality. It utilizes an infrared CO2 sensor plus temperature and relative humidity (RH) sensors. The Comfort Chek 400 is a rugged, handheld, battery-powered IAQ instrument for measuring and displaying carbon dioxide (CO2), Temperature and RH indoors.
Comfort Chek 400 Operation Manual 1.2. Comfort Chek 400 Shipping Checklist This checklist ensures that you have received everything required to run your Comfort Chek 400. If you do not receive any of the items listed below, contact the factory immediately. • • • • • Comfort Chek 400 instrument 4 x “AA” alkaline batteries AC wall adapter (with North American plug) Operation manual Black plastic carrying/storage case 1.3. Key Features Features of the Comfort Chek 400 include the following.
Comfort Chek 400 Operation Manual 2. SPECIFICATIONS Categories/Subcategories Enclosure Power Dimensions HxWxD 6.63” x 2.75” x 1.25” (17 cm x 7 cm x 3 cm) Weight 7.1 ounces (200 grams) including batteries Battery Four alkaline batteries (4 x “AA”) 9 VDC from external AC adapter which is included in kit (North American wall configuration only). The end of the wall adapter that plugs into the instrument is 1.3 mm diameter, center positive.
Comfort Chek 400 Operation Manual Figure 2-1.
Comfort Chek 400 Operation Manual 3. COMPONENTS 3.1. Power Supply The instrument is powered by either 4 “AA” alkaline batteries or a supplied DC wall adapter (9V/1A output). Install batteries into the battery compartment on the rear of the instrument and make sure they are in correct polarity and making good contact. When the wall adapter is used it will cut off the power supply from the batteries. The wall adapter cannot be used as a battery charger.
Comfort Chek 400 Operation Manual LCD Symbol Description TWA Time Weighted Average (8 hours) STEL Short-Term Exposure Limit (15 minute weighted average) HOLD MIN/MAX Readings are frozen and remain unchanged MINimum/MAXimum readings Low battery indicator DP Dew Point temperature AIR AIR temperature WBT Wet Bulb Temperature % °T (C/F) Unit of measurement of relative humidity Celsius/Fahrenheit temperature unit of measure 3.3.
Comfort Chek 400 Operation Manual 4. OPERATION 4.1. Power On/Off Press the SET button to switch instrument on. At power up, it emits a short beep and performs a 30-second countdown while the instrument warms up. It then enters normal operating mode displaying real time CO2, temperature, and RH readings. To switch the instrument off, press the SET button. Figure 4-1. Warm-up Countdown Figure 4-2.
Comfort Chek 400 Operation Manual 4.4. Data Hold Press the HOLD button to freeze the current readings. The HOLD icon is indicated at the top left corner of the LCD. All current readings remain unchanged, except TWA and STEL. Press the HOLD button again to cancel this function. Figure 4-5. HOLD Mode 4.5. MIN, MAX, TWA, and STEL While in normal operating mode, press MNX/AV to see the minimum, maximum, and time weighted average readings.
Comfort Chek 400 Operation Manual 4.6. Audible Alarm The instrument has an audible alarm to provide warnings to the user when CO2 concentrations exceed the limit (see P1.0 in setup for setting alarm threshold). It emits beeps (about 80 dB) when measured CO2 concentration exceeds the preset value and stops when any key (except SET) is pressed or readings fall below the preset alarm value. It beeps again when the value once again exceeds the preset limit.
Comfort Chek 400 Operation Manual Figure 4-9. P3.1 Temperature Scale Figure 4-10. Temperature Units 4.11. CO2 Calibration The instrument defaults to be calibrated manually in ambient air where CO2 concentration outdoors is around 400 ppm. NOTE: Though not required, it is recommended that you calibrate the instrument prior to each use. It is also recommended that the instrument be calibrated annually by a trained technician or the factory using calibration gas.
Comfort Chek 400 Operation Manual 4.12. RH Calibration Overview The meter defaults to be calibrated at 33% RH and 75% salt solution. The ambient condition is recommended to be at 25° C with stable humidity (it’s better to be close to the calibration value). To abort the calibration, switch the instrument off at any time. CAUTION: Do not calibrate the humidity without the default calibration salt solution as it will cause permanent damage to the RH sensor. 4.13.
Comfort Chek 400 Operation Manual Figure 4-14. 75% Cal Mode 5. TROUBLESHOOTING 5.1. Cannot Power On Press the SET button for more than 1 second and try again. In using batteries, ensure that the batteries are making good contact and that they are installed with the correct polarity. Otherwise, ensure that the wall adapter is connected and plugged in. 5.2. Fixed (Unchanging) Readings Verify that the data hold function is not activated.
Comfort Chek 400 Operation Manual 6. CO2 LEVELS AND GUIDELINES The following are excerpts from ANSI/ASHRAE addendum standard 62.1 – 2004. Refer to section 1.4 for general CO2 guidelines. 6.1. Enforceable and/or Regulatory Levels • OSHA: 5000 ppm (The Occupational Safety and Health Administration) • MAK: 5000 ppm or 10,000 ppm (1 hour) (German Institution) 6.2.
Comfort Chek 400 Operation Manual World Headquarters 621 Hunt Valley Circle, New Kensington, Pennsylvania 15068 Phone: 724-334-5000 • Toll Free: 1-800-736-4666 • Fax: 724-334-5001 Website: www.MyBacharach.com • E-mail: help@MyBacharach.
