Marvel 30iM Manuel de service

- 1 - Model 30IM Service Manual Contents 1. Introduction Page 1.1 Product Specifications 2 1.2 Serial Nameplate 3

- 10 - 3. Limit time the system is opened. DO NOT EXPOSE OPEN SYSTEM FOR MORE THAN 15 MINUTES. This will result in sealed system failure. Leave rep

- 11 - 2.5 Access Valves A temporary access valve can be used to service or evaluate the system. The access valve can be installed on the compresso

- 12 - 12 13.1 56 52.3 14 14.4 60 57.5 16 15.7 64 62.7 18 17

- 13 - After recharge, check pressures. Refer to Table A for corresponding temperatures and pressures. If pressures or temperatures are incorrect, c

- 14 - 3.1 Hot Gas Valve The hot gas valve is used to bypass the capillary tube and send warm gas to the evaporator when opened during the harvest

- 15 - 3. Remove the grille by removing the two screws and disconnecting the three wires to the rocker switch. Be sure to mark where these wires go

- 16 - 9. Install system access valve(s) and recover refrigerant. After recovering, be sure to cap off the access valve to prevent contamination of

- 17 - low side tubing is found, the compressor, drier, and hot gas valve will need to be replaced. The temperature control thermistor sets on the

- 18 - 25. Un-braze and remove the suction line at the compressor (see figure 3.8). 26. Un-braze the hot gas discharge line at the compressor (see f

- 19 - 3.3 Compressor The compressor is the heart of the refrigeration system. It also, however, relies on other parts of the system to function. M

- 2 - 1.1 Specifications Cabinet dimensions: Height: 34 to 35 ¼ inches, adjustable Width: 14 ¾ inches Depth: 21 inches (cabinet only)

- 20 - 17. Remove the compressor by removing the two lock-nuts on the mounting plate of the compressor (see figure 3.8). Lift the compressor off of

- 21 - 5. Remove the water valve. 6. Take out the two screws that secure the top of the electrical bracket located in the front of the mechanical ar

- 22 - Drain valve Screw Hose clamps Figure 4.1 Removal 1. Drain water in the reservoir by removing the drain plug or shutting off the water suppl

- 23 - supply, and see if there is any water flowing in the water lines. If water is present and flowing, the valve will need to be replaced. 3. Che

- 24 - Removal 1. Disconnect power, water line, and drain line. If a drain pump is used, it will need to be disconnected and removed. 2. Remove th

- 25 - 2. Use a reference temperature point that is known (such as an ice bath) and measure the resistance across the wire leads. 3. Check the rec

- 26 - The bin thermistor is made up of a soft copper tube body and placed inside a plated copper sensing tube. This plated tube is then secured to

- 27 - Installation: Reverse the removal procedure for installation. Make certain that the thermistor’s copper tube is fully inserted into the slee

- 28 - 6.1 Grid-Cutter The grid-cutter is used to cut cubes from the ice slab formed on the evaporator. It uses low voltage, 12VAC, to heat the wi

- 29 - 2. Plug the grid-cutter into the receptacle on the side of the liner. Route the plug wire between the reservoir and liner (see figure 6.1).

- 3 - 1.2 Serial Nameplate The serial nameplate is located on the bottom flange directly above the grille on all Marvel units. Figure 1.1 gives the

- 30 - Installation 1. Slide the circulation pump into the reservoir. 2. Insert the reservoir drain tube fitting to the drain tube in the rear of

- 31 - h Check for continuity between the hot and neutral terminals and the pump’s motor casing. If continuity is found, replace the circulation pu

- 32 - 7.1 Wiring Diagram Figure 7.1 is the wiring diagram for the ice maker. 7.2 Point-to-Point Wire Layout The diagram on the following page, f

- 33 - Figure 7.2

- 34 - Notes:

- 35 - 8 Ordering Parts The following information will need to be given when inquiring about service parts: 1. Model and serial number located on

- 4 - 1.4 After Servicing After servicing the unit, whether it is at the site or at service center, check the following: h MAKE CERTAIN THERE AR

- 5 - h Area should be ventilated with temperature above 55F and below 90F for proper operation. h Unit must be installed indoors away from the

- 6 - The above materials can be found at most local plumbing supply stores or hardware stores. Follow the manufacture’s installation instructions f

- 7 - 42242436, Marvel Drain Pump can be used to drain water when gravity drain is not available. Refer to Appendix B for drain pump installation in

- 8 - Upon setting the switch to the “ON” position, the water solenoid will energize for 1.5 minutes and then de-energize. When the bin thermistor s

- 9 - 1.12 Operation. Selector switch is in the “Clean” position. The assumptions before proceeding are that water is supplied to the ice maker (se