13-25-608 Page 72
THERMOSTATIC MIXING VALVE
Thermostatic Mixing Valve (TMV) Inspection –
This device has no user-serviceable or repairable components.
If it fails to maintain adequate compressor discharge temperature, replace it as follows:
FIGURE 9- 5 – Thermal Mixing Valve
1.
Be sure the unit is completely off and that no air pressure is in the oil reservoir and in the air cooled after
cooler. Close the service valve.
2.
Disconnect lockout and tagout the power supply to the starter.
3.
Unscrew the G1-1/2
” plug retaining the TMV assembly in place. Remove the TMV body and its spring from
the compressor housing.
4.
Inspect the valve seat surfaces for damage or foreign matter. Note its setting temperature
– it is stamped on
the valve seat area and will read
“55ºC” or “70ºC”.
5.
Immerse the valve body in a bath of compressor oil; heat the oil slowly and observe if the seat starts
extending about 5ºC below its setting and reaches full stroke at the stamped setting. Replace the device if
one of the following conditions is present:
a. The stamped setting on the valve seat is not correct. The Fixed Speed compressor package should be
fitted with the 55ºC TMV, unless by consultation with Gardner Denver, it has been approved to use the
70ºC element instead.
b. The seat fails to stroke fully at the correct temperature.
6.
Assemble the TMV assembly into the housing in the reverse order.
7.
Run the unit and check for leaks.
Summary of Contents for APEX25-30A
Page 11: ...13 25 608 Page 10 Figure 1 2 COMPRESSOR ILLUSTRATION VARIABLE SPEED 304USC797 A Ref Drawing...
Page 12: ...13 25 608 Page 11 Figure 1 3 COMPRESSOR ILLUSTRATION FIXED SPEED 305USC797 A Ref Drawing...
Page 27: ...13 25 608 Page 26 Figure 4 2 WIRING DIAGRAM VS 230 VOLT 306USC546 01 Ref Drawing Page 1 of 4...
Page 28: ...13 25 608 Page 27 Figure 4 3 WIRING DIAGRAM VS 230 VOLT 306USC546 01 Ref Drawing Page 2 of 4...
Page 29: ...13 25 608 Page 28 Figure 4 3 WIRING DIAGRAM VS 230 VOLT 306USC546 01 Ref Drawing Page 3 of 4...
Page 30: ...13 25 608 Page 29 Figure 4 3 WIRING DIAGRAM VS 230 VOLT 306USC546 01 Ref Drawing Page 4 of 4...
Page 31: ...13 25 608 Page 30 Figure 4 3 WIRING DIAGRAM VS 575 VOLT 307USC546 02 Ref Drawing Page 1 of 4...
Page 32: ...13 25 608 Page 31 Figure 4 4 WIRING DIAGRAM VS 575 VOLT 307USC546 02 Ref Drawing Page 2 of 4...
Page 33: ...13 25 608 Page 32 Figure 4 4 WIRING DIAGRAM VS 575 VOLT 307USC546 02 Ref Drawing Page 3 of 4...
Page 34: ...13 25 608 Page 33 Figure 4 4 WIRING DIAGRAM VS 575 VOLT 307USC546 02 Ref Drawing Page 4 of 4...
Page 45: ...13 25 608 Page 44 Figure 4 7 WIRING DIAGRAM FS 575 VOLT 309USC546 01 Ref Drawing Page 1 of 3...
Page 46: ...13 25 608 Page 45 Figure 4 8 WIRING DIAGRAM FS 575 VOLT 309USC546 01 Ref Drawing Page 2 of 3...
Page 47: ...13 25 608 Page 46 Figure 4 8 WIRING DIAGRAM FS 575 VOLT 309USC546 01 Ref Drawing Page 3 of 3...
Page 51: ...13 25 608 Page 50 Figure 4 8 PIPING AND INSTRUMENTATION ILLUSTRATIONJ 301USC797 C Ref Drawing...
