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TestEquity 123C, Руководство по эксплуатации и обслуживанию


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Chapter 8 – Maintenance 

 

 

TestEquity 123C Temperature Chamber 

Page 8-3

 

How to Inspect the Refrigeration Machinery Compartment 

 

!

 

WARNING:

  Wear safety goggles when inspecting the machinery compartment to protect 

against a refrigerant line which could break. 

 

1.

 

Unplug the chamber from the power source. 

2.

 

Remove the side and rear panels. 

3.

 

Inspect for signs of water leaks. 

4.

 

Inspect for signs of refrigeration tubing abrasion. 

5.

 

Inspect for oil around refrigeration valves, fittings and joints. This may be a sign of leaks. 

6.

 

Inspect for loose hardware and tighten as required. 

7.

 

Inspect for signs of insect or rodent infestation. Yes, it does happen! 

Содержание 123C

Страница 1: ...1 2018 Model 123C Temperature Chamber Serial Number 330218 and above Operation and Service Manual TestEquity LLC 6100 Condor Drive Moorpark CA 93021 Support 877 512 3457 Toll Free 805 480 0638 Corpora...

Страница 2: ......

Страница 3: ..._________________________________ 3 4 Internal Test Fixtures ___________________________________________________________________ 3 4 Chapter 4 Limit Controller_________________________________________...

Страница 4: ...____________8 7 Troubleshooting _________________________________________________________________8 9 Refrigeration System Charging Instructions_________________________________________8 11 R 404A High...

Страница 5: ...ard symbol 2 precedes an electric shock hazard CAUTION or WARNING statement Installation Safety Notices 2 WARNING The power cord is equipped with a NEMA 5 20P grounded polarized plug To prevent a shoc...

Страница 6: ...safe limits This could occur if your test sample exceeds the live load rating of the chamber or if the chamber s refrigeration system fails This chamber has a set of contacts that can be used to remov...

Страница 7: ...e the retainer Keep in mind that there is also Velcro that holds the retainer in place Place the retainer in the front of the pallet on the floor 5 Locate the two ramps under the chamber and remove th...

Страница 8: ...nment Operation above 30 C 85 F or below 16 C 60 F ambient room temperature is NOT recommended Condensate Drain The chamber has a condensate drain connection on the rear of the chamber This provides a...

Страница 9: ...ontroller automatically turns the refrigeration system on or off as required based on the deviation from temperature set point Refer to the separate F4T or F4 Temperature Controller manual for details...

Страница 10: ...t 1 Mode When the CONDITIONING Switch is in the EVENT 1 position you can enable and disable all chamber functions through the Power button on the F4T Temperature Controller or Event 1 Digital Output 1...

Страница 11: ...cts and surfaces that are hot or cold to prevent severe burns or frostbite Protective gloves are recommended CAUTION If your test sample is energized it may be capable of raising the workspace tempera...

Страница 12: ...ing low temperature operation or water when maintaining over 0 C and cooling is required To avoid moisture condensation make sure the port plugs are inserted at all times Also avoid opening the chambe...

Страница 13: ...d is written by the manufacturer Watlow for a wide variety of applications and configurations Not all features or functions are applicable Only the capabilities of a model PM6L1AJ AAAABAA are applicab...

Страница 14: ...your actual chamber temperature set point to prevent nuisance tripping 5 Press the RESET Key to return to the Home Page 6 The upper display will show the actual chamber temperature while the lower dis...

Страница 15: ...ower to your test sample if the Limit Controller s temperature limits are exceeded The safety contacts are rated as follows Resistive 10 A 250 VAC or 10 A 28 VDC Inductive 7 A 250 VAC To access the sa...

Страница 16: ......

Страница 17: ...2 flowing GN2 Gaseous Nitrogen Installation Option TE 1239 Connect a supply of GN2 with a maximum pressure of 100 psig to the 1 4 inch FPT fitting which is designated PURGE on the rear panel Dry Air I...

Страница 18: ...adjust the flow of purge gas into the chamber The flowmeter has a scale calibrated in SCFM The flow of purge gas should be adjusted to the minimum amount required to obtain the desired drying in the c...

Страница 19: ...rating properly by following the procedure in How to verify the chamber performance How can I modify the chamber to cool faster Unfortunately there is little you can do to improve upon the designed in...

Страница 20: ...s the ability of the temperature controller to accurately display a temperature measurement when compared to a standard The controller display accuracy is 1 66 C However the total measurement accuracy...

Страница 21: ...u would like to use is qualified Can Should I put a filter in front of the condenser air inlet No TestEquity does not recommend this Just follow the maintenance procedures and clean the condenser fins...

Страница 22: ......

Страница 23: ...min 53 min ultimate 65 C 15 min 21 min 32 min 45 min 54 min ultimate Note Transition times are measured after a 2 hour soak at the start temperature with an empty chamber Does not include the effect...

Страница 24: ......

Страница 25: ...only Preventive Maintenance Intervals Daily or As Needed Clean chamber interior and exterior Listen for abnormal noise or vibration Every 3 Months Inspect the door seal Inspect the refrigeration machi...

Страница 26: ...eing able to recognize changes from normal operating noises can be a valuable way to identify problems and prevent further damage Examples of noises to be aware of include Circulator motor and fan noi...

Страница 27: ...frigerant line which could break 1 Unplug the chamber from the power source 2 Remove the side and rear panels 3 Inspect for signs of water leaks 4 Inspect for signs of refrigeration tubing abrasion 5...

Страница 28: ...er temperature should slowly increase and stabilize to 85 C It should NOT overshoot beyond 85 C by more than a few tenths of a degree and the compressors should NOT need to turn ON in order to maintai...

Страница 29: ...ar terminals and burned or excessively pitted contacts on contactors How to Clean the Condenser 1 Disconnect the chamber from the power source 2 Remove the lower front panel 3 Clean the condenser and...

Страница 30: ...hamber and adjusting the temperature controller s calibration to correct for these errors is incorrect The correct way to adjust what the temperature controller displays compared to what is measured a...

Страница 31: ...ght glass 7 to the thermostatic expansion valve 20 The thermostatic expansion valve controls the feed of liquid refrigerant to the evaporator circuit of the cascade condenser and reduces the pressure...

Страница 32: ...balance pressure when the system is off within safe limits Both the low and high stages each have a high pressure switch 8A 8B respectively which turns off the entire refrigeration system in the event...

Страница 33: ...both compressors are OFF 2 Setpoint is low than chamber temperature but F4T Compressor Output F4 DigitalOut 8 is not ON 3 If the Cool light is ON compressors are ON 1 Pressure switch PS1 or PS2 is tr...

Страница 34: ...uity and only occurs in cool mode 1 Re enter values as documented in the controller manual NEVER use the Autotune feature 2 Control parameters may need to be changed for your unique test conditions 3...

Страница 35: ...performance as outlined in How to verify the chamber performance NOTE If the F4 Controller is cycling Cool Light cycles on off the sightglass may appear 1 2 to 2 3 full This is normal R 508B Low Stage...

Страница 36: ...out of service for even one day then you should purchase critical spare parts in advance Although most parts are standard and available from a variety of local distributors some parts are either harde...

Страница 37: ...0T US DC24 SSR1 200177 1 ea Relay Solid State 10A 5VDC in Omron G3NE 210T US DC5 SSR4 6 200129 2 ea Switch Carlingswitch LRA211 RA B 125N SW1 3 200023 2 ea Switch ON OFF ON Carlingswitch RC911 RA B 0...

Страница 38: ...on Cooling Danfoss 068U202700 11 100314 1 ea Filter Drier Danfoss 023Z5048 6 34 100524 2 ea High Pressure Cutout Johnson Controls P20DB 1D 8A 8B 100341 2 ea Hot Gas Bypass Regulator Sporlan ADRI 1 4 0...

Страница 39: ...Limit Sides both Alt high High only or LoW Low only L hY Limit Hysteresis 2 Change not recommended A ty Alarm Type oFF Do Not Change PAr1 Upper Display ACPu Alt none PAr2 Lower Display Lst Alt Lh s Hi...

Страница 40: ......

Страница 41: ...bor if they initiate service on their own without prior approval from TestEquity Replacement parts must be supplied by TestEquity for in warranty claims Purchaser will not be reimbursed for parts they...

Страница 42: ......

Страница 43: ...Chapter 10 Drawings TestEquity 123C Temperature Chamber Page 10 1 Chapter 10 Drawings...

Страница 44: ......

Страница 45: ...Electrical Subpanel Component Location...

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