Frymaster H55 Series Technical Reference Manual page 12

Control Boxes
Control boxes, behind the controllers, contain the components that monitor the vat
temperatures and control the heat: interface boards, heat relays and in some cases the
spark module.
An H55 full vat control box.
A FilterQuick control box
Heat
Relay
An OCF control box. Oil fi ltration is manual; there is no OIB board.
High-Effi ciency Gas
Interface
Board
Heat
Relay
Test
Points
Interface
Heat
Board
Relay
Interface
Board
2-7
Test
Points
Test
Points
Spark
Module
Oil is Back
Used to
detect
returning oil
and described
elsewhere.
This board
can halt
the ignition
system.