VWR International 1917 Скачать руководство пользователя страница 18 | Manualshive

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VWR International 1917 Скачать руководство пользователя страница 18

18

Display and Fyrite reading do not
match

1/ calibration error - clear chamber for 12 hrs and confirm at "0"
2/ turn set point up and down to see if solenoid valve works by
feeling and listening to valve
3/ assure that IR tube block is completely tight
4/ if display is varying when doing Fyrite test, have a leak on IR
base or mounting plate, or CO2 is injecting at time of test.
5/ take voltage reading across sensor leads 0=0V and 20=1V
6/ assure that sensor is properly mounted
7/ disp lower than fyrite: air leak around the CO2 sensor or fan
motor shaft
8/ display higher than fyrite: leak in tube from sample port to
chamber
9/ display higher than fyrite: Fyrite fluid worn out, replace fluid with
Fyrite refill.
10/ display higher than fyrite: poor Fyrite sampling technique, see
section 6.0
11/ display higher than fyrite: defective Fyrite pump or tubing
12/ CO2 sensor, interface or controller failure

Is unstable – display or actual reading
varies around set point

1/ confirm that fan is working
2/ check for air leak around CO2 sensor or fan motor shaft
3/ magnetic field interference
4/ poor door seal
5/ atmospheric pressure fluctuations
6/ defective Fyrite pump or tubing
7/ CO2 entering chamber too quickly
a- tank pressure too high
b- regulator set wrong
c- restrictor incorrect or missing
8/ electronic problem with CO2 sensor, interface or controller
9/ top of unit exposed to cold air drafts
10/ unit being operated without shadow box cover
11/ electrical interference – atmospheric or conducted
12/ incubator too heavily loaded

Can't adjust set points or calibration -
"locked up"

1/ turn unit off, then on to reset processor in controller
2/ if repeatedly happens, call Customer Service

Feeding continuously or abnormally
high CO2 usage

1/ do decay test: if more than 1% decay in an hour, check for leak
: door gasket tightness, motor inlet to chamber, sensor and
probe inlet to chamber
2/ check output signal from controller
3/ check solenoid valve for correct operation
4/ leak in plumbing including between regulator and CO2 tank
5/ door being opened too often

Won’t hold calibration – Fyrite reading
varies but display stable

1/ atmospheric pressure fluctuations
2/ top of unit exposed to cold air drafts
3/ unit being operated without shadow box cover in place

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Содержание 1917

Страница 1: ...BATOR MODEL 1917 1927 INSTALLATION AND OPERATION MANUAL Sheldon Manufacturing Inc P O Box 627 Cornelius Oregon 97113 EMAIL tech Shellab com INTERNET http www Shellab com Shellab 1 800 322 4897 503 640 3000 FAX 503 640 1366 ...

Страница 2: ...ENANCE SECTION 8 0 TROUBLESHOOTING SECTION 9 0 PARTS LIST UNIT SPECIFICATION SCHEMATICS REV 6 04 4861495 This unit is a CO2 incubator for professional industrial or educational use where the preparation or testing of materials is done at approximately atmospheric pressure and no flammable volatile or combustible materials are being heated These units are not intended for hazardous or household loc...

Страница 3: ... freight bill any damage found and enter your claim on the form supplied by the carrier 1 2 Inspect for concealed loss or damage on the unit itself both interior and exterior If any the carrier will arrange for official inspection to substantiate your claim Save the shipping crate until you are sure the unit has been delivered in good condition 1 3 Return Shipment If for any reason you must return...

Страница 4: ...ion of the available user adjustable components 2 1 Indicates that you should consult your manual for further description or discussion of a control or user item 2 2 Indicates Temperature 2 3 Indicates Over Temperature Safety 2 4 C Indicates Degrees Centigrade 2 5 CO2 Indicates Carbon Dioxide 2 6 Indicates Gas CO2 for this unit 2 7 Indicates AC Power On Section 2 ...

Страница 5: ...al codes 3 2 Location When selecting a site for the unit consider conditions which may affect performance such as heat from steam radiators ovens autoclaves etc Avoid direct sun fast moving air currents heating cooling ducts and high traffic areas To ensure air circulation around the unit allow a minimum of 5cm of clearance between the incubator and surrounding walls or partitions which might obst...

Страница 6: ...cal parts or that may contain solvents that will harm the coatings Special care should be taken when cleaning around sensors to prevent damage Warning Never clean the unit with alcohol or flammable cleaners with the unit connected to the electrical supply Always disconnect the unit from the electrical service when cleaning and assure all volatile or flammable cleaners are evaporated and dry before...

Страница 7: ...7 Figure 1 ...

Страница 8: ...whenever the temperature controller is energizing the heating element The element will go on and off as heat is needed to maintain the set point temperature 4 4 High Limit Thermostat Marked SET HIGH LIMIT the High Limit Thermostat is completely independent of the Main Temperature Controller and functions as an override control If at any time the Main Temperature Control fails in the ON position th...

Страница 9: ... Arrow Pads are used for inputting the set point calibrating the display and muting or unmuting the audible alarm C HIGH and LOW Alarm Indicators will light whenever there is an alarm condition associated with the CO2 within the incubator chamber D Alarm Mute Indicator will light whenever the audible alarm has been muted 4 8 Injection This pilot lamp is on whenever the CO2 controller is injecting ...

Страница 10: ... arrow pads until the desired value is reached If no adjustments are made within five 5 seconds the controller will default back to displaying the temperature within the chamber Once set point is established allow 24 hours for the temperature to stabilize 5 3 Calibrating Main Temperature Controller During Main Temperature Calibration it is important that the door not be opened for any reason and t...

Страница 11: ...tion that may occur 5 7 CO2 Supply As stated at the beginning of this section do not connect the CO2 supply to the incubator until the temperatures have been set Use only MEDICAL GRADE CO2 with an in line filter provided with your tubing kit from the tank to the incubator These incubators use CO2 in small quantities Precise metering of input is vital for maximum performance and only a two stage CO...

Страница 12: ...y repeat the calibration NOTE When using the Fyrite insure that gas is not being injected while the reading is being taken Change the CO2 set point to 0 0 prior to taking the sample and change the set point back to the desired value after the use of the Fyrite is finished 5 12 It is recommended that the accuracy of your CO2 control system be monitored by measuring the actual CO2 concentration on a...

Страница 13: ...p of canister and press firmly 5 With button depressed squeeze bulb 27 times On the last squeeze and with bulb still deflated release hose from button 6 Turn Fyrite canister upside down 3 times each time allowing all fluid to flow to the opposite end of the canister 7 Tip canister slightly to ensure all fluid has been released from top of canister 8 Read CO2 concentration in NOTE Your Fyrite indic...

Страница 14: ...om the electrical service when cleaning and assure all volatile or flammable cleaners are evaporated and dry before reattaching the unit to the power supply 7 2 Check CO2 supply periodically do not let it run out Automatic tank switches are available from your dealer 7 3 Periodically check CO2 supply lines and connections for leaks Use a liquid soap solution to detect leaks Wet supply line and con...

Страница 15: ...s over set point and then settles to set point recalibrate see section 5 3 Temperature too low 1 high limit set too low see section 5 4 2 controller set too low see section 5 2 3 unit not recovered from door opening wait for display to stop changing 4 unit not recovered from power failure or being turned off incubators will need 24 hours to warm up and stabilize 5 element failure see if heating li...

Страница 16: ...anging either door opening or room airflow from heaters or air conditioning stabilize ambient conditions 4 sensor miss located damaged or wires may be damaged check mounts for control and High Limit sensors then trace wires between sensors and controls 5 calibration sensitivity call Customer Service 6 high limit set too low be sure that High Limit set point is more than 5 degrees over desired Main...

Страница 17: ...ogether 5 tank pressure too high see section 5 8 6 CO2 sensor partially plugged with dirt or condensation 7 regulator set wrong see section 5 8 8 incubator too heavily loaded 9 incubator being operated without shelving 10 CO2 attached to sample port instead of CO2 IN fitting 11 If display and Fyrite does not match see below Overshoots set point and continues to rise display and Fyrite match 1 debr...

Страница 18: ...2 sensor or fan motor shaft 3 magnetic field interference 4 poor door seal 5 atmospheric pressure fluctuations 6 defective Fyrite pump or tubing 7 CO2 entering chamber too quickly a tank pressure too high b regulator set wrong c restrictor incorrect or missing 8 electronic problem with CO2 sensor interface or controller 9 top of unit exposed to cold air drafts 10 unit being operated without shadow...

Страница 19: ...out Check valve seat or channels for contamination Check CO2 filter and or grade of CO2 used If seat is worn replace OTHER Controller on at all times locked up 1 Adjust set point to room temperature If the light goes out but is still heating replace the solid state relay 2 turn unit off and on to reset 3 if cannot change any condition on the front panel call Customer Service Front panel displays a...

Страница 20: ...ntamination in chamber 2 reduce air flow in chamber by dampening down inlet restrictor be sure to verify adequate temperature uniformity at the reduced air flow 3 protect open samples from areas of maximum air current e g inlet air ducts ...

Страница 21: ...01483 Door Switch X1000022 X1000022 Heating Element 1917 9570713 9570845 Heating Element 1927 9570715 9570716 High Limit Thermostat 10000J 10000J I O Switch 103351 103351 Pilot Light Green 200021 200021 Pilot Light Red 200020 200020 Power Cord 1800516 101990 Temperature Control 1750557 1750558 Transformer 120VAC 12VDC 6750507 6750507 Transformer Stepdown 220 115V NA 103107 Section 9 ...

Страница 22: ...27 850 lbs 710 lbs Dimensions Exterior WxDxH in Interior WxDxH in 1917 36 x34 x 74 31 x 25 x 62 1927 41 x 34 x 87 35 x 26 x 76 5 Capacity Cubic Feet 1917 28 1927 40 Temperature Range Uniformity Sensitivity 1917 Amb 5 to 70 C 5 C 37 05 C 1927 Amb 5 to 70 C 5 C 37 05 C ...

Страница 23: ...23 PLUMBING DIAGRAM ...

Страница 24: ...24 WIRE DIAGRAM ...

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