Hoshizaki IM-240DME Manual De Instalación página 5

ENGLISH
Icemaker
Potable Water
Inlet G3/4
Inlet Hose
Drain Outlet R3/4
Outlet Hose
Fig. 12
[Water-Cooled Model]
* 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. 4 and 5). 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 affect the performance of the machine, it will
most certainly cause a high use/waste of a valuable resource and is
not recommended.
* 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 local regulations.
[a] Standard connections according to WRC regulations in U.K.
(Fig. 14 and 15)
* When selecting a Cooling Tower, refer to the following peak values
of heat flow in the Condenser:
Model IM-240DW/XW:
* 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 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.
* 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 defrost cycle.
* The Strainer must be cleaned periodically.
[Icemaker Connections]
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. Hand tighten
sufficiently to provide leak free joint.
Water Supply Tap
Inlet Hose
Fig. 13
5235 W
2) Attach the other end of inlet hose to the water tap (Fig. 3), noting
washer is correctly positioned before hand tightening as above.
Note: If filtration or treatment is used, ensure icemaker section only
is on treated water supply, not the Condenser.
3) Attach grey flexible outlet hose (accessory) to the R3/4 fitting on the
left side of the icemaker as indicated (Fig. 14), confirming fitment
of rubber washer before finally hand tightening the joint. This pipe
can be cut to length as necessary to suit position of main drain.
4) By means of a suitable spanner or wrench, tighten the /2-3/4
nipples (accessory) into the Rc/2 fittings on the left side of the
icemaker as indicated. P.T.F.E. tape and/or a suitable sealing
compound should be used to obtain a leak free joint.
Note: Jointing compounds should be approved and suitable for
potable water use.
5) Connect the Condenser cooling circuit to the free end of /2-3/4
nipples as indicated (Fig. 4) using a suitable rigid type pipe.
Potable Water
Inlet G3/4
/2-3/4
Nipple
Inlet Hose
Outlet Hose
Flow Control Valve
Icemaker
Strainer
[b] Connections according to regulations other than WRC by
utilising accessory hoses (Fig. 16)
) Follow the instructions from ) to 4) in [a] above.
2) For Condenser connections, use supplied accessory hoses and
make the same connections as ) to 3) in [a] above to the free end
of /2-3/4 nipples as indicated (Fig. 6).
4
Icemaker
Cooling Water
Inlet Rc/2
Cooling Water
Outlet Rc/2
Drain Outlet R3/4
Condenser Cooling Circuit
Fig. 14
Cooling
Tower
P
Pump
Fig. 15