Vulcan-Hart 126905, Service Manual Supplement

Page: 14 / 56

ER SERIES FRYER SERVICE MANUAL SUPPLEMENT - ELECTRICAL OPERATION
F24696 (May 2001) Page 14 of 56
COMPONENT FUNCTION
NOTE: For components not listed here, refer to the ER series service manual listed on the front cover and under
"INFORMATION SOURCES" in the "GENERAL" section.
Filter Power Switch . . . . . . . . . Supplies 120VAC to pump motor when filter relay is energized.
Filter Relay . . . . . . . . . . . . . . . . Supplies 120VAC to pump motor through filter relay contacts (N.O.) when
24VAC coil is energized. Filter power switch must be ON and the filter valve
switch or discard valve switch must be CLOSED (valve handle extended).
Transformer 2T . . . . . . . . . . . . Supplies 24VAC to the oil filter control circuit and fryer power switch.
Transformer is energized when supply power is connected to fryer.
Transformer 1T . . . . . . . . . . . . Supplies 12VAC to the computer power supply board. Transformer is
energized when fryer power switch is turned ON. Computer control models
only.
Pump Motor . . . . . . . . . . . . . . .
Operates the "pump" to circulate oil through the filtering system.
Filter Valve Switch . . . . . . . . . . Energizes the filter relay coil to supply power to the pump motor through
filter relay contacts (N.O.) when switch is CLOSED (valve handle extended).
When oil filtering is complete, close the manual drain valve to the fryer and
allow the vat to refill. Retract the filter handle when all filtered oil is returned.
Discard Valve Switch . . . . . . .
Energizes the filter relay coil to supply power to the pump motor through
filter relay contacts (N.O.) when switch is CLOSED (valve handle extended).
This allows the oil to be discarded through the discard hose into a separate
container. When filter tank is empty, retract the handle to return the discard
switch to normal operating position.
Fryer Power Switch . . . . . . . . . Energizes relay coil R1 and supplies power to fryer control circuit through
relay R1-1 contacts (N.O.). The switch positions are: momentary ON,
momentary OFF with a center NEUTRAL (starting) position. Solid state
controls only.
Circuit 1 on the switch is the normally CLOSED (N.C.) side. Press power
OFF to momentarily OPEN switch contacts and turn the fryer OFF.
Circuit 2 on the switch is the normally OPEN (N.O.) side. Press power ON to
momentarily CLOSE switch contacts and turn the fryer ON.
Relay R1 . . . . . . . . . . . . . . . . . . Supplies power to fryer control circuit and basket lift circuit (if installed)
through relay R1-1 contacts (N.O.) when 24VAC coil is energized. The relay
remains energized through R1-2 contacts (N.C.) and fryer power switch
contacts until power switch is turned OFF. Full vat and split vat fryers, solid
state controls only.
Relay R2 . . . . . . . . . . . . . . . . . . Supplies power to fryer control circuit and basket lift circuit (if installed)
through relay R2-1 contacts (N.O.) when 24VAC coil is energized. The relay
remains energized through R2-2 contacts (N.C.) and fryer power switch
contacts until power switch is turned OFF. Split vat fryers with solid state
controls only.