Quantcast EXPANSION VALVE. - TM-5-4120-339-140100 4120-01-091-9672">

 

Click here to make tpub.com your Home Page

Page Title: EXPANSION VALVE.
Back | Up | Next

Click here for thousands of PDF manuals

Google


Web
www.tpub.com

Home


   
Information Categories
.... Administration
Advancement
Aerographer
Automotive
Aviation
Construction
Diving
Draftsman
Engineering
Electronics
Food and Cooking
Logistics
Math
Medical
Music
Nuclear Fundamentals
Photography
Religion
   
   

 

Share on Google+Share on FacebookShare on LinkedInShare on TwitterShare on DiggShare on Stumble Upon
Back
Figure 4-11. Removal and installation of service valves
Up
TM-5-4120-339-14 Air Conditioner Vertical Compact 9 000 BTU/HR 208 Volts 3-Phase 50/60 HZ Tierany Model TM9KV-208-3-60 Manual
Next
Figure 4-12. Location of expansion valve and quench valve
TM 5-4120-339-14
d. Installation.
(1) Refer to figure 4-11 and install the suction pressure service valve and/or the discharge pressure service
valve.
(2) Perform any further maintenance of refrigeration components required.
(3) If no further maintenance of refrigeration components is required, refer to paragraph 4-8 and purge the
refrigerant system.
(4) Refer to paragraph 4-4c and check the service valves and the dehydrator for refrigerant leaks. Refer to
paragraph 4-4d and repair any leaks found.
(5) Refer to figure 4-4 and evacuate the refrigerant system.
(6) Refer to paragraph 4-10 and charge the system with refrigerant.
(7) Re-perform inspection procedure (paragraph a) for service valve to check for refrigerant leaks.
4-15.
EXPANSION VALVE.
a. Inspection.
(1) Turn the selector switch to the "OFF" position and disconnect the air conditioner from the electrical power
source.
(2) Refer to figure 4-12 and inspect the expansion valve, power bulb and tubing for obvious defects.
(3) Refer to paragraph 4-4c and check the expansion valve for refrigerant leaks. If expansion valve is leaking
refrigerant, refer to step c for repair.
b. Adjust.
CAUTION
Never adjust the expansion valve unless absolutely necessary. When adjusting
the expansion valve, allow the unit to run on "COOL" at least 20 minutes between
each adjustment. Insure that all panels are in place during the running period.
(1) Refer to figure 4-12 and tape the bulb of a thermometer to the suction line near the expansion valve
power bulb.
(2) Refer to figure 4-5 and install a suction pressure gage.
(3) Turn the selector switch to the "COOL" position and turn the thermostat control knob counter-clockwise to
its limit. Operate the unit on cool for approximately 30 minutes to stabilize the thermometer reading.
(4) Note pressure indicated on the suction pressure gage. To this pressure, add 2 psig (the estimated
suction line loss).
4-26

Privacy Statement - Press Release - Copyright Information. - Contact Us

Integrated Publishing, Inc.