Expansion Valve - Hoshizaki F043-809 KMD-410MAH Service Manual

8) Install the new drier (see "V. 4. DRIER").
9) Check for leaks using nitrogen gas (970 kPa) and soap bubbles.
10) Evacuate the system and charge it with refrigerant (see "V. 1. [c] EVACUATION AND
RECHARGE").
11) Attach the solenoid coil to the valve body, and secure it with the screw.
12) Connect the lead wires.
13) Refit the panels in their correct positions.
14) Turn on the power supply.

6. EXPANSION VALVE

1) Turn off the power supply.
2) Remove the panels.
3) Recover the refrigerant and store it in an approved container.
4) Remove the insulation and the expansion valve bulb on the suction line.
5) Remove the expansion valve cover and disconnect the expansion valve. Place the new
expansion valve in position.
6) Remove the drier, then place the new drier in position.
7) Braze all fittings while purging with nitrogen gas flowing at a pressure of 20 to 30 kPa.
8) Use an electronic leak detector or soap bubbles to check for leaks. Add a trace of
refrigerant to the system (if using an electronic leak detector), and then raise the
pressure using nitrogen gas (970 kPa). DO NOT use R-404A as a mixture with
pressurized air for leak testing.
40
239°F (115°C).