Zero Zone RVZC30, Installation & Operation Manual

Page: 46 / 49

DEFROSTING
LOW TEMP (CONT.)
DEFROST HEATER ELEMENT
On 30" door cases, one half of the U-shape heater is located on the front of the coil and the other half is located on the rear of the coil
(
Figure 35 on page 43
). On 24" door cases and wrap-around cases, the heater element is located under the coil (
Figure 33 on page
41 ). The electric wire leads are connected in the junction box behind the front kick rail.
HEATER ELEMENT REMOVAL
Front and rear heater location (VZ and VZT2 30" door)
The U-shape defrost heater has one leg located on the front of the coil and one leg located on the rear of the coil. The front heater is
located approximately 1" off the floor and the rear heater is approximately 2" off the floor. The heater is secured to the coil by a number
of stainless steel heater retaining clips. The heater is fastened to the floor on the right-hand side of the coil. Remove fasteners holding the
heater to the floor.
The U-shape defrost heater can be removed by first pulling the front leg of the retaining clip away from the coil and sliding the heater out
from under the clip. The rear leg of the heater can then be removed by raising the retaining clips 2 inches at a time, working from right to
left on the coil. Repeat this process until the retaining clips are free of the coil. The heater will slide up with the retaining clip.
Under coil location (MZ 24" and WA door).
To remove the defrost element, remove the coil covers. Lift the inner coil cover upward and tip the fan housing forward. This will expose
the coil. Remove both fan housing end brackets and center coil supports, then slide out the complete heater pan assembly from under
the coil. Slowly lift the heater pan assembly between the coil and fan housing, turning it on edge while lifting.
Heaters are installed in the reverse order of how they were removed.
42 • Defrosting - Low Temp