Cornelius R-134A service manual Adjusting Dispensing Valves Water Flow Rate, SF-1 DISPENSING VALVE

NOTE: To readjust CO2 regulator to a lower setting, loosen adjusting screw lock nut, then turn screw to the left (counterclockwise) until pressure gage reads 5 psi lower than new setting will be. Turn the ad- justing screw to the right (clockwise) until the gage registers new setting, then tighten the lock nut.

Adjusting Carbonator CO2 Regulator.

Adjust primary CO2 regulator (regulator controls Unit built-in cold carbonator CO2 pressure) to a nominal 80 psig. Check for CO2 leaks and repair if evident. INLET CO2 PRESSURE TO CARBONATOR MUST NOT EXCEED 125 PSIG.

Sugar Syrup Tanks Secondary CO2 Regulator.

Adjust sugar syrup tanks secondary CO2 regulator with 100 psi gage at 40 psig for syrup lines up to 10 feet in length plus one pound for each additional length of 10 feet, plus one pound for each 2 feet of vertical lift. For example; if syrup line total length is 30 feet and total vertical lift is 6 feet, then 40 psig + 2 psig (1-pound for ev- ery 10 feet of length over 10 feet which is 20 feet) + 3 psig (1 pound for every 2 feet of vertical lift which is 6 feet); total equals 40 + 2 + 3 = 45 psig CO2 regulator setting. Loosen lock nut on CO2 regulator adjusting screw, turn adjusting screw to the right (clockwise) until gage registers desired pressure, then tighten lock nut.

Low-Calorie (Diet) Syrup Tank Secondary CO2 Regulator

Adjust low-calorie (diet) soft drink tank secondary CO2 regulator with 30 psi gage to 10 psig for syrup lines up to 30 feet in length. Syrup lines longer than 30 feet in length may require a slightly higher CO2 regulator setting of 12 psig maximum. Excessive CO2 pressure may cause low-calorie syrup carbonation resulting in foam.

ADJUSTING DISPENSING VALVES WATER FLOW RATE

SF-1 Dispensing Valve.

(see Figure 6)

1.Remove acorn nut securing the dispensing valve cover, then remove the cover to expose the valve water and the syrup flow controls.

2.Remove dispensing valve nozzle by turning nozzle counterclockwise and pulling down.

3.Remove syrup diffuser by pulling straight down.

ADJUSTABLE WATER	ADJUSTABLE SYRUP
FLOW REGULATOR
	FLOW REGULATOR

NOZZLE

SYRUP DIVERSION

TUBE ASS’Y (P/N 319540000)

WATER

CHAMBER

RATIO CUP (P/N 311100000)

FIGURE 6. SF-1 DISPENSING VALVE

23 312027000