Hoshizaki IM-21CNE-HC Bedienungsanleitung Seite 11

ENGLISH
[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. 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 WRAS regulations in U.K.
* When selecting a cooling tower, refer to the following peak values of
heat flow in the condenser:
Model IM-30CW/45W:
IM-65W:
IM-100/130W:
IM-240W:
* 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.
[Icemaker Connections]
1) Attach the angled end of flexible inlet hose (accessory) to the G3/4
fitting on the rear of the icemaker as indicated, ensuring rubber
sealing washer is correctly positioned. Hand tighten sufficiently to
provide leak free joint.
2) Attach the other end of inlet hose to the water tap, 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 rear of the icemaker as indicated, confirming fitment of rubber
washer before finally hand tightening the joint. The hose can be cut
to length as necessary to suit position of main drain.
4) By means of a suitable spanner or wrench, tighten the 1/2-
3/4 nipples (accessory) into the Rc1/2 fittings on the rear 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 1/2-3/4
nipples as indicated using a suitable rigid type pipe.
295-760W
875W
1165W
5235W
Water-Cooled Model [a]
Potable Water
Inlet G3/4
Inlet Hose
1/2-3/4 Nipple
Outlet Hose
Flow Control Valve
Icemaker
Strainer
Potable Water
Inlet G3/4
Inlet Hose
1/2-3/4 Nipple
Outlet Hose
8
Drain Outlet R3/4
Cooling Water
Inlet Rc1/2
Cooling Water
Outlet Rc1/2
Condenser Cooling Circuit
P
Pump
Water-Cooled Model [b]
Drain Outlet R3/4
Cooling Water
Inlet Rc1/2
Cooling Water
Outlet Rc1/2
Inlet Hose
Cooling
Tower