Electrical Wiring

Table 1. Fluid Cooler Internal Volume and Weight

Fluid	Number	Number	Internal	Approximate
Cooler	of	of	Volume	Net Weight
Fan Configuration	Fans	Rows	Gallons	(Lbs.)
1 x 2	2	2	6.7	1540
1 x 2	2	3	9.2	1590
1 x 2	2	4	11.8	1600
1 x 3	3	3	13.0	2360
1 x 3	3	4	16.7	2420
1 x 4	4	3	16.7	3150
1 x 4	4	4	21.7	2190
1 x 5	5	3	20.4	3510
1 x 5	5	4	26.6	3990
1 x 6	6	4	31.6	4790

2 x 2	2	2	13.5	1540
2 x 2	2	3	18.5	1620
2 x 2	2	4	23.5	1760
2 x 3	3	3	25.9	2420
2 x 3	3	4	33.4	2480
2 x 4	4	3	33.3	3230
2 x 4	4	4	43.3	3510
2 x 5	5	3	40.7	4040
2 x 5	5	4	53.1	4390
2 x 6	6	4	63.1	5270

The electrical installation should be in accordance with National Electrical Code, local codes and regulations. Proper overcurrent protection should be provided for the fan motors. Wiring diagrams shown are only basic and do not show fuses, disconnect switches, etc., which must be provided in the field.

All standard motors have internal inherent overload protectors. Therefore, contactors can be used instead of starters requiring thermal protectors, eliminating the problem of furnishing the proper heating elements.

All dry coolers or units are furnished with either single- phase or three-phase fan motors which are identified by the unit dataplate.

Electrical leads from each motor terminate at the unit junction box. Field connections must be made from these leads through a contactor, fuse and disconnect in accordance with local, state and national codes.

Three-phase motors must be connected to three-phase power of voltage to agree with motor and unit dataplate.

The motors are wired into a common junction box. The motors must be checked for proper rotation. Be sure to check that motor voltage and control connection agree with electric services furnished.