Chapter 7: Repair Procedures
Radiant Heater Assembly Repair Procedures
7-36 Service Manual
7.6.1.1 Realigning the Canopy
Refer to “Figure 7-37 Canopy Alignment”.
There are four nuts and four nut-and-bolt sets that adjust canopy alignment. These require a 10 mm
wrench and torque to approximately 81 inch-pounds.
1. Loosen all eight black canopy alignment nuts.
2. Manually lift the canopy to its highest adjustment position (so the studs in the canopy bracket are
located at the bottom of the slots in the housing bracket). Tighten the top two alignment nuts on the
housing bracket.
3. If necessary, plug in the power cord and switch on the device.
4. Use the canopy lower switch to lower the canopy until it reaches its bottom travel limit switch. This is
indicated when the “In Transition” message appears on the Control panel.
5. Loosen the top two alignment nuts on the back plate to fully seat the canopy on the side panels. As a
starting point, there should be an approximate 0.15 inch gap at each of the canopy corners. One way to
shim up the corners, is to place a 2.5 mm hex key or a 3 mm hex key as spacers in either of the north
canopy corners and a 4 mm hex key or a 5 mm hex key as spacers at either of the south canopy
corners.
6. Retighten the top two alignment nuts on the housing bracket.
7. Tighten the remaining two nuts and four nut-and-bolt sets on the housing bracket.
8. Check alignment by raising and lowering the canopy. If the alignment is not satisfactory, loosen and
retighten all eight alignment nuts with corner shims in place. Repeat until alignment is satisfactory.
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