Marvel ML24BNS1RB Owner's Manual

25

Your beer dispenser comes equipped with a 5 pound CO

2 

tank and a dual gauge regulator. The lower gauge should 

be reading approximately 750 psi (52 bar) when the tank is 

properly filled and the tank is not in the refrigerator (at room 

temperature). The tank will read less when chilled. Use this 

lower gauge as an indicator of how much CO

2 

you have left 

in the tank.

The upper gauge reads the pressure being supplied to the 

beer keg. Follow the procedure below to adjust the pres-

sure to 12 - 14 psi (0.8 to 1 bar) for lager beer or 9 - 12 psi 

(0.6 to 0.8 bar) for ale's. 

1.  Close the shutoff valves at the bottom of the regulator.

2.  Be sure the faucet handle is closed on the tower (see 

Figure 47).

3.  Loosen the lock nut by turning 

↶ counterclockwise us-

ing the 

1

⁄

2

" open end wrench until loose, this will allow 

adjustment of the pressure adjustment screw. 

4.  With the flat bladed screwdriver turn the adjustment 

screw 

↷ clockwise to increase the pressure or ↶ coun-

terclockwise to decrease the pressure.

5.  Open the shutoff valve on the bottom of the regula-

tor. The gauge reading may drop but will return very 

quickly.

6.  Pull the ring on the keg coupler to allow the gas to flow 

momentarily.

7.  Make any fine adjustments if necessary with the adjust-

ment screw.

8.  Tighten the locknut with the 

1

⁄

2

" open end wrench by 

turning clockwise 

↷.

Your beer dispenser comes equipped with a 5 pound CO

2 

tank and a single gauge regulator. The gauge reads the 

pressure being supplied to the beer keg. Follow the proce-

dure below to adjust the pressure to 12 - 14 psi (0.8 to 1 

bar) for lager beer or 9 - 12 psi (0.6 to 0.8 bar) for ale's. 

1.  Close the shutoff valve at the bottom of the regulator.

2.  Be sure the faucet handle is closed on the tower (see 

Figure 47).

3.  Loosen the lock nut by turning 

↶ counterclockwise us-

ing the 

1

⁄

2

" open end wrench until loose, this will allow 

adjustment of the pressure adjustment screw. 

4.  With the flat bladed screwdriver turn the adjustment 

screw 

↷ clockwise to increase the pressure or ↶ coun-

terclockwise to decrease the pressure.

5.  Open the shutoff valve on the bottom of the regula-

tor. The gauge reading may drop but will return very 

quickly.

6.  Pull the ring on the keg coupler to allow the gas to flow 

momentarily.

7.  Make any fine adjustments if necessary with the adjust-

ment screw.

8.  Tighten the locknut with the 

1

⁄

2

" open end wrench by 

turning clockwise 

↷.

Ring on keg 

coupler

Figure 45 (Regulator for 

Single Dispense Tower)

Figure 46 (Regulator for 

Double Dispense Tower)

Figure 44

(2) shutoff 

valves (closed 

position shown)

Upper Gauge

Pressure Gauge

Lower Gauge

Pressure 

Adjustment 

Screw

Lock Nut

Pressure 

Adjustment 

Screw

Lock Nut

shutoff valve 

(closed posi-

tion shown)