Carrier 40 - Torque Values; Safety Devices Overview

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c. Compressor Motor Ratings
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UNIT
Voltage Frequency Phase kW HP MRA* LRA*
230 400 230 400
50S
230 / 400 60 Hz 3 1.491 2 11.8 9.8 45.1 26
5
0
S
208 / 230 60 Hz 1 1.491 2 15.6 -- 78.7 --
4
0
S
230 / 400 60 Hz 3 1.491 2 11.8 9.8 45.1 26
4
0
S
208 / 230 60 Hz 1 1.491 2 15.6
--
78.7
--
* MRA = Maximum Rotor Amps LRA = Locked Rotor Amps
1.5 TORQUE VALUES
Assembly
Ft--Lbs N.m Size
Standby compressor 4.1 5.5 M10
Evaporator Fan Motor -- Bracket 2.2 3 M4
Condenser -- frame 7.4 10 M6
Condenser Fan -- Blade 3.7 5 M6
Mounting bolts 84.1 114 M12
1.6 SAF ETY DEVICES
System components are protected from damage caused by unsafe operating conditions by automatically shutting
down the unit when such conditions occur. This is accomplished by the fuses listed in Table 1-2 and safety devices
listedinTable1-3.
Table 1-2 Fuses
Item
Rating
Road supply fuse (FR) 50 A
Standby supply fuse (FS)
(a)
50 A
Main standby fuse (FB -- X3) 16 A
Electric heat fuses (F4/F5/F6) [Future] 6.3 A
Transformer primary fuses (F1/F2/F3) 3.15 A
Main road fuse (FR1)
(b)
60 A
Field Replaceable Fuse
(c)
(Starting with Controller S/N 1997)
1A
(a) On road / standby unit only
(b) This fuse is located close to the vehicle battery (12 v).
(c) This fuse is located on the logic board inside the microprocessor and protects the
microprocessor against reverse polarity on the power supply. (See Figure 1-3).