Hoshizaki IM-21 Service Manual page 49

* When adjusting the Water Regulator to increase the pressure or to lower the temperature of
the cooling water, do not exceed the following ranges to prevent erosion in the water circuit:
Flow Speed:
Flow Rate:
* Water flow can be reduced down to 60%. The differential between the inlet and outlet water
temperatures will increase (to 8°C with 60% water flow), but the cooling capacity will
decrease. Be sure to keep enough capacity in summer.
Note: When installing a Flow Control Valve as shown in Fig. 10, the condition at the Cooling
Water Inlet should not exceed the following ranges:
Water Temperature: 30°C or less
Water Pressure:
Flow Rate:
[b] Connections according to regulations other than WRC by utilising accessory
hoses (Fig. 11)
1) Follow the instructions from 1) to 4) in [a] above.
2) For Condenser connections, use supplied accessory hoses and make the same
connections as 1) to 3) in [a] above to the free end of 1/2-3/4 nipples as indicated (Fig.
11).
1/2-3/4 Nipple
Outlet Hose
2 m/sec or less
5.9 lit/min or less
0.5 bar or more
8 - 10 lit/min
Potable Water
Inlet G3/4
Inlet Hose
Inlet Hose
Drain Outlet R3/4
Cooling Water
Inlet Rc1/2
Cooling Water
Outlet Rc1/2
Fig. 11
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