Vulcan 1ER50A User Manual download pdf (Page 20)

ERA & EBD SERIES ELECTRIC FRYERS - ELECTRICAL OPERATION

SEQUENCE OF OPERATION

1. Conditions.

Fryer connected to correct supply voltage

and is properly grounded. Separate

connections are required for each section

of the battery.

1) 120/24VAC transformer energized.

B. Internal fryer circuit breaker ON (24kW,

208-240V units only).

C. Power switch off.

D. Shortening at proper level in fry tank and

below last set point temperature used.

E. Cooking control is setup properly and

ready to use.

F. Manual drain valve closed (drain valve

interlock switch N.O. is closed).

G. Tilt switch contacts closed (N.O. - held

closed with heating elements lowered).

H. High limit thermostat closed.

2. Turn power switch on.

A. Supply voltage energizes:

1) 1CON and 3CON thru high limit

thermostat and tilt switch.

2) R2 power relay coil and R2 N.O.

contacts close.

3) Cooking control thru DVI switch.

3. Press start momentary switch.

A. If shortening temperature is below set

point, J5 outputs 24VDC to R1 thru wire

56.

1) R1 heat relay coil energized and R1

N.O. contacts close.

a. 2CON and 4CON are energized

and heating elements are

powered.

4. Shortening reaches set temperature.

A. Cooking control de-activates the heat

demand output (24VDC) at J5. With power

removed from J5, R1 is de-energized thru

wire 56.

1) 2CON and 4CON are de-energized

and power is removed from heating

elements.

5. Cooking control cycles heat output on

shortening temperature until power switch is

turned off, heating elements are raised or a

high limit condition occurs.

A. If shortening reaches 460EF, the high limit

thermostat opens, 1CON and 3CON are

de-energized and power is removed from

heating elements.

1) 1CON and 3CON remain de-

energized until the shortening

temperature drops below 460°F,

manual reset button is pressed and

start button is actuated.

Filtering System

The discard valve handle is connected to a

mechanical valve and switch assembly to route the

flow of shortening (electrically and mechanically) in

the filtering system.

Refer to Installation & Operation manual for specific

instructions on filtering.

1. Conditions

A. Fryer connected to correct supply voltage

and is properly grounded.

B. Power switch to the fryer section off.

C. Shortening between 300°F and 350°F.

D. Filter drawer assembly installed properly.

E. Filter power switch off.

F. Discard valve handle (yellow) retracted.

1) Discard valve switch N.O. contacts

open. Mechanical discard valve

closed.

2. Turn power switch on, to the fryer section to be

filtered.

3. Set cooking control between 300°F (minimum)

and 350°F (maximum).

NOTE: Shortening should not be filtered outside of

this temperature range. At lower temperatures the

shortening is thicker which may increase filtering

time and place a greater load on the pump. At higher

shortening temperatures, the pump seal life is

decreased.

A. Allow shortening to cycle at set

temperature for approximately 10 minutes.

NOTE: If using solid shortening, once it has

melted, stir the shortening to eliminate any solid

shortening in cold zone of the fry tank.

4. Open the manual drain valve to the fryer

section in need of and drain the shortening into

filter tank. (Heat circuit will be disabled)

F25385 (May 2010) Page 20 of 32

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Vulcan 1ER50A User Manual Page 20

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