7. Maintenance and Servicing
Even if during the warranty period, the snow protection hood becomes rusted under conditions that are
caused by alkaline or corrosive moisture, recommendations are to provide salt damage resistance products
to prevent such damage. In order to prolong the product life, perform periodical maintenance to prevent
signi
fi
cant aging due to deterioration. Carry out the following periodical inspection and maintenance works
in conjunction with air conditioners’ inspection.
(1) Red Rust Generation and Coating Film Check
If red rust is generated, or coating
fi
lm is peeled/cracked, scour the rust off or apply touch-up coating.
When recoating such parts, be sure to grind the coating using sandpaper (#180 to 230) before re-
applying coating agent. Wear protective equipment such as vinyl gloves when handling the coating
agent to prevent contact with skin.
(2) Retightening Screws for Installation and Assembly
Check for loose screws and retighten when inspection and maintenance is performed. In order to
prevent screw breakage, be sure to tighten with the following torques:
* M5 Tapping Screw Type C for Assembling
12
: 2.6 + 0.7 [Ibf-ft] (3.5 + 1.0 [N•m])
* M5 Tapping Screw Type B for Installation
11
: 1.8 + 0.7 [Ibf-ft] (2.5 + 1.0 [N•m])
© 2015 Johnson Controls, Inc.
Code No. LIT-12012088
Issued June, 2015
P5415543