Hoshizaki IM-240DME Service Manual page 42

[Water-Cooled Model] [Water-Cooled Model]
* Hoshizaki recommends that the water-cooled Condenser should be connected to a closed * Hoshizaki recommends that the water-cooled Condenser should be connected to a closed
circuit recirculating type cooling system utilizing a tower, water chiller or similar (see Fig. 30 circuit recirculating type cooling system utilizing a tower, water chiller or similar (see Fig. 30
and 31). Water make up should be via a ball valve/break tank arrangement. and 31). Water make up should be via a ball valve/break tank arrangement.
* Whilst connecting a water-cooled Condenser to a mains water (potable) supply will not * Whilst connecting a water-cooled Condenser to a mains water (potable) supply will not
affect the performance of the machine, it will most certainly cause a high use/waste of a affect the performance of the machine, it will most certainly cause a high use/waste of a
valuable resource and is not recommended. valuable resource and is not recommended.
* The services of a licensed or coded plumber should be used to ensure a correct installation. * The services of a licensed or coded plumber should be used to ensure a correct installation.
* The connections should be made properly in compliance with the applicable national or * The connections should be made properly in compliance with the applicable national or
local regulations. local regulations.
[a] Standard connections according to WRC regulations in U.K. (Fig. 30 and 31) [a] Standard connections according to WRC regulations in U.K. (Fig. 30 and 31)
* When selecting a Cooling Tower, refer to the following peak values of heat flow in the * When selecting a Cooling Tower, refer to the following peak values of heat flow in the
Condenser: Condenser:
Model Model IM-240DW/XW: IM-240DW/XW:
* Pipes between the Cooling Tower and the icemaker should be at least 20 mm DIA to reduce * Pipes between the Cooling Tower and the icemaker should be at least 20 mm DIA to reduce
pressure loss, even though the icemaker fittings are 13 mm DIA. pressure loss, even though the icemaker fittings are 13 mm DIA.
* Pressure loss in the water circuit inside the unit will be 5 to 6 m when the cooling water flows * Pressure loss in the water circuit inside the unit will be 5 to 6 m when the cooling water flows
at the ratio of 4 to 5 lit/min. at the ratio of 4 to 5 lit/min.
* Select a Circulating Pump referring to the above values of heat flow. * Select a Circulating Pump referring to the above values of heat flow.
* Do not use a Cascade Pump, or the Water Regulator will vary the flow and stop it during the * Do not use a Cascade Pump, or the Water Regulator will vary the flow and stop it during the
defrost cycle. defrost cycle.
* The Strainer must be cleaned periodically. * The Strainer must be cleaned periodically.
[Icemaker Connections] [Icemaker Connections]
1) Attach the angled end of white flexible inlet hose (accessory) to the G3/4 fitting on the left 1) Attach the angled end of white flexible inlet hose (accessory) to the G3/4 fitting on the left
side of the icemaker as indicated, ensuring rubber sealing washer is correctly positioned. side of the icemaker as indicated, ensuring rubber sealing washer is correctly positioned.
Hand tighten sufficiently to provide leak free joint. Hand tighten sufficiently to provide leak free joint.
2) Attach the other end of inlet hose to the water tap (Fig. 29), noting washer is correctly 2) Attach the other end of inlet hose to the water tap (Fig. 29), noting washer is correctly
positioned before hand tightening as above. positioned before hand tightening as above.
Note: If filtration or treatment is used, ensure icemaker section only is on treated water Note: If filtration or treatment is used, ensure icemaker section only is on treated water
supply, not the Condenser. supply, not the Condenser.
5235W 5235W
38 38
E1CG4880210 E1CG4880210