TurboChef HhB Comparison Outline page 4

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Service Differences, Continued

One Eprom for All Electrical Configurations

The HhB 2 eprom can be used regardless of electrical

configuration, unlike the original HhB oven which had

different eproms for single or multiphase operation.

NOTE: The HhB 2 eprom is not backwards-compatible

with the original HhB.

Rack motor attaches

to drag link

Drag link actuates

left swing arm

Figure 11: Original HhB Swing Arm Assembly

Figure 12: HhB 2 Swing Arm Assembly

HhB/HhB 2 Comparison Outline

Rack Motor Location and Installation

The rack motor on the original HhB oven was located on the

left side of the oven cavity, and was connected to the swing

arm assembly by a drag link. The rack motor on the HhB 2

oven is located on the right side of the oven cavity and is

connected directly to the swing arm. The elimination of the

drag link improves rack oscillation reliability. See Figures 11

and 12, below.

(Front of oven)

NOTE: Oven components

removed for clarity

Rack motor attaches directly

to right-side swing arm

DOC-1201 (A) / Page 4 of 5

Hhb 2