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Installing Evaporators
Ceiling Preparation
R R e e f f e e r r t t o o t t h h e e i i l l l l u u s s t t r r a a t t i i o o n n o o n n t t h h e e f f o o l l l l o o w w i i n n g g p p a a g g e e . .
I I m m p p o o r r t t a a n n t t : : Safety precautions must be followed. Refer to U U n n i i t t I I n n s s t t a a l l l l a a t t i i o o n n H H a a z z a a r r d d s s located in the S S a a f f e e t t y y P P r r e e c c a a u u t t i i o o n n s s
section of this manual before proceeding.
I I m m p p o o r r t t a a n n t t : : Truck ceiling must be structurally strong enough to support the weight of the evaporator(s).
I I m m p p o o r r t t a a n n t t : : Truck ceiling must be flat and mounting locations correct for proper remote evaporator installation. Foam
insulation in ceiling must be removed from evaporator mounting area and aluminium spacers must be
installed between evaporator mounting plate and trailer ceiling.
N N o o t t e e : : If truck ceiling frame is other than aluminum, use mylar film between aluminum spacer and frame.
•
For ceiling mounting s s t t u u d d applications, weld a nut (same thread as stud) onto a 44.45 mm (1.75 in.) hole saw and
turn the nut onto mounting stud using a socket wrench.
•
For ceiling mounting b b o o l l t t applications, weld a bolt (same thread as tapped hole) onto a 44.45 mm (1.75 in.) hole saw
and turn into tapped mounting hole using a socket wrench.
•
Alternative method is to remove mounting studs or bolts and use a hole saw with a standard pilot drill small enough
to run up into threaded hole without damaging the threads. Reinstall mounting studs or bolts.
Mounting Stud or Bolt Requirements
R R e e f f e e r r t t o o t t h h e e i i l l l l u u s s t t r r a a t t i i o o n n o o n n t t h h e e f f o o l l l l o o w w i i n n g g p p a a g g e e . .
The mounting studs or bolts used to attach the evaporator(s) to the ceiling must be 10.0 mm, (0.50 in., Grade 5, U.S.
applications only), medium carbon steel, 120000 PSI tensile strength, cadmium plate and dichromate finish. Studs to
extend below ceiling 38.0 mm (1.50 in.) to 50.1 mm (2.00 in.)
N N o o t t e e : : The installation kit provides both 10.0 mm metric and 0.50 in. imperial nuts and washers. Be sure to use the
correct ones for your application.
S-2 or S-3 Evaporator Installation
R R e e f f e e r r t t o o t t h h e e i i l l l l u u s s t t r r a a t t i i o o n n o o n n t t h h e e f f o o l l l l o o w w i i n n g g p p a a g g e e . .
I I m m p p o o r r t t a a n n t t : : Evaporator must be properly mounted to provide a slope towards drain. This is accomplished by adding
one 3/8 in. and one 3/16 in. washers on the drain side and only one 3/8 in. washer on the other side at each
mounting surface.
1. Remove evaporator cover to access mounting holes.
2. Install aluminum spacers onto ceiling mounting studs and raise the evaporator into position. Secure evaporator
onto mounting studs with flat washers and locking nuts. Torque to 81.3 N•m (60 ft-lb).
3. Install mounting bolts, lock washers (installer supplied) and flat washers onto the evaporator and raise into position.
Install aluminium spacers and secure evaporator to ceiling. Torque to 81.3 N•m (60 ft-lb).
4. A properly installed evaporator will slope slightly toward the drain tubes to allow for water drainage. Two additional
washers are included in the kit to help assist sloping the evaporator towards the drain.
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TK 56701-1-IM-EN
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