E.Testing Expansion Valve

Replacement of the expansion valve, for reasons other than those described in Sections C and D, should only be done after the following tests have been performed.

1. Perform output Testing according to the Service Microfiche:

- for Models 107,123,124 and 126 see Job No. 83-607
- for Model 201 see Job No. 83-036

2. If after completion of - step no. 11 (for Models 107, 123, 124 and 126) or step no. 16, under "Testing" (Model 201):

a. suction pressure is too high
b. discharge pressure is too low
c. air temperature at center outlet is too high
d. condensation forms on the suction hose and evaporator the expansion valve may be stuck open. Replace expansion valve.
3. If after completion of - step no. 11 (for models 107,123,124 and 126) or step no. 16, under "Testing" (Model 201):

a. suction pressure is too low
b. discharge pressure is too low
c. air temperature at center outlet is too high
d. condensation forms on the suction hose and evaporator the expansion valve may be stuck closed. Replace expansion valve.

IMPORTANT: When performing the output Test (job no. 83-036 or 83-607), use the performance charts in Section J of this service information. Do not use the temperature/pressure graphs on the microfiche.