Hoshizaki M029-897 service manual B. Component Service Information

5)Disconnect the gauge manifold hose from the vacuum pump and attach it to a refrigerant service cylinder. Remember to loosen the connection and purge the air from the hose. For the required refrigerant charge, see the nameplate. Hoshizaki recommends only virgin refrigerant or reclaimed refrigerant which meets ARI Standard 700 (latest edition) be used.

6)A liquid charge is required when charging an R-404A system (to prevent fractionation). Place the service cylinder on the scales; if the service cylinder is not equipped with

a dip tube, invert the service cylinder, then place it on the scales. Open the high-side valve on the gauge manifold.

7)Allow the system to charge with liquid until the proper charge weight is met.

8)If necessary, add any remaining charge to the system through the low-side.

NOTICE! To prevent compressor damage, use a throttling valve or liquid dispensing device to add the remaining liquid charge through the low-side refrigerant access valve with the icemaker running.

9)Close the high and low-side gauge manifold valves, then disconnect the gauge manifold hoses.

10)Cap the refrigerant access valves to prevent a possible leak.

B.Component Service Information

NOTICE

When replacing a component listed below, see the notes to help ensure proper operation.

Component	Notes
Compressor	Install a new start capacitor, run capacitor, and start relay.
Thermostatic	• Attach the thermostatic expansion valve bulb to the suction line in the same location
Expansion Valve	as the previous bulb.
	• The bulb should be between the 10 and 2 o'clock positions on the tube.
	• Secure the bulb with the clamp and holder, then insulate it.
Hot Gas Valve	• Replace the strainer if applicable.
	• Use copper tube of the same diameter and length when replacing valve lines.
Fan Motor	Install a new capacitor.
Pump Motor	Install a new capacitor.
Actuator Motor	Install a new capacitor.
Evaporator	• Attach the new thermistor to the same location on the evaporator as the previous
(Cube Control)	thermistor.
Thermistor	• Smoothly fill the recessed area of the thermistor holder with high thermal conductive
	type sealant. Hoshizaki America part number 4A0683-01 (Silicone Heat Sink
	Compound 10-8108 manufactured by GC Electronics), KE-4560 RTV (manufactured
	by ShinEtsu Silicones), or equivalent are recommended.
	• Attach the new thermistor in position on the evaporator and press down the
	thermistor holder over the thermistor.
	• Be very careful to prevent damage to the leads.

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