Alliance Laundry Systems HF575, HF900, HF455, HF730 instruction manual Water connection, Water drain

4

Water connection

The machine is delivered with hoses with 3/4" connections (HF455-575) and with 1x3/4" + 3x1" connections (HF730-900). These hoses fit the water inlet valves of the machine and the main water inlet taps. All the inlet valves have to be connected.

To ensure the optimal functioning of the water inlet valves, the water pressure on the inlet should be between 3 and 5 bar (40 and 80 psi). If the pressure is too low, the cycle time will increase considerably.

Inlet flow capacity per minute (gallons / liters): 7.93 + 13.2 / 30 + 50.

In case of boiler fed machines, a minimum of hot water of 90°C - 194°F should be available per unit. (See Table 1)

MODEL	Min Contents Boiler
	METRIC	US
For the HF455, IHF455, IHF100, CHF100	350 l.	12.36 ft³
For the HF575, IHF575, IHF135, CHF135	445 l.	15.72 ft³
For the HF730, IHF730, IHF165, CHF165	566 l.	19.99 ft³
For the HF900, IHF900	566 l.	19.99 ft³

Table 1

To comply with the WRAS water regulations: an 'approved' single check valve or some other no less effective backflow prevention device shall be fitted at the point of connection(s) between the supply and the fitting (IRN R150).

Water drain

The machine is equipped with a drain valve with 3" outer diameter (80 mm) for HF455- 575 and with 2x3" outer diameter (2x80 mm) for HF730-900. This drain valve should be connected to the drain by means of the drain elbow which is delivered with the machine.

The diameter of the main drain should be adapted to the water flow and the number of machines. It should be sufficient to handle at least 80 l/min - 21.13 gal./min

(HF455-575) and 160 l/min - 42.26 gal./min (HF730-900) per machine.

It is necessary to connect the main drain at least on one side to an open air-brake to allow ventilation.

When the main drain has not been sufficiently deodorized, every machine should be installed separately with a deodorizer.

25