Carrier 60 Service Manual download pdf (Page 17)

1-9

T--295

1.10 RELAY BOARD

1.10.1 Permanent Magnet Motors with 2 speed switching from series to parallel connection (Option 1)

JP2

D2 D6

CB 4

K2

CB 3

CB 2

K1

CB 1

CB 6

EF4EF3

EF6

D14

EF2

K5

EF1

D17

K4

EF5

CF3

D26 D30

CB 10

CB 8

CB 9

CF1

CB 5

K3

CB 7

K20K18

K22K24

CF4

K23K21

CF6 CF5

D38 D41

CF2

K11

K10

K12

D85

JP1

K13K19

JP3

JP4

K9

CB 11

CB 12

CB 13

JP6

K15K14

K17K16

JP5

D60

D66

D69

D51

D72

D57

D63

K8

K7

K6

D54

23

4

5

1

23

1

2

3

4

5 6

1

2

3

4

1

Figure 1-8 Relay Board (Option 1)

a. Relays

K1 Energizes evaporator fans 1 & 2 in high speed

or evaporator fans 1,2,3 & 4 in low speed.

K2 Energizes evaporator fans 3 & 4 in high speed

(not energized in low speed).

K3 Energizes evaporator fan 5 in high speed or

evaporator fans 5 & 6 in low speed.

K4 Energizes evaporator fan 6 in high speed (not

energized in low speed).

K5 Connects the negative side of evaporator fans

1 & 2 to ground in high speed. Connects the

negative side of evaporator fans 1 & 2 to

positive side of evaporator fans 3 & 4 in

low speed

K6 Connects the negative side of evaporator fan

5 to ground in high speed. Connects the

negative side of evaporator fan 5 to

positive side of evaporator fan 6 in

low speed

K 7 Energizes condenser fans 1 & 2 in high speed

or condenser fans 1,2,3 & 4 in low speed

K 8 Energizes condenser fans 3 & 4 in high speed

(not energized in low speed).

K 9 Energizes condenser fan 5 in high speed or

condenser fans 5 & 6 in low speed.

K10 Energizes condenser fan 6 in high speed

(not energized in low speed).

K11 Connects the negative side of condenser fans

1 & 2 to ground in high speed. Connects the

negative side of condenser fans 1 & 2 to

the positive side of condenser fans 3 & 4 in

low speed.

K12 Connects the negative side of condenser fan

5 to ground in high speed. Connects the

negative side of condenser fan 5 to

the positive side of condenser fan 6 in

low speed.

K13 Energizes the A/C clutch.

K14 Energizes unloader 1.

K15 Energizes unloader 2.

K16 Energizes the fresh air damper.

K17 Energizes the heat valve.

K18 Energizes the fault light output.

K19 Energizes the Boost Pump.

K20 Energizes the spare output.

K21 Is energized by the logic board to turn the

evaporator fans on high. The contacts of this

relay energize the coils of relays K1, K2,

K3 & K4.

K22 Is energized by the logic board to turn the

evaporator fans on low. The contacts of this

relay energize the coils of relays K1, K3,

K5 & K6.

K23 Is energized by the logic board to turn the

condenser fans on high. The contacts of this

relay energize the coils of relays K7, K8,

K9 & K10.

K24 Is energized by the logic board to turn the

condenser fans on low. The contacts of this

relay energize the coils of relays K7, K9,

K11 & K12.

1 2 ... 12 13 14 15 16 17 18 19 20 21 22 ... 55 56

Comments to this Manuals

No comments