AT&T D-10,000 Cooling Water Requirements, Maintenance, Installation of Remote Condenser Optional

Cooling Water Requirements

MODEL #		HEAT TO		COOLING WATER		KW INPUT (4)
	COOLING		AMBIENT (1)	GPM (2)	GPM (3)
	WATER
D-400-W	23682		1780	4.7	1.9	1.95
D-500-W	33894		2550	6.8	2.7	2.6
D-600-W	37250		3650	7.5	3.0	2.92
D-800-W	52859		3980	10.6	4.3	4.22
D-1000-W	66150		5360	13.2	5.3	4.8
D-1600-W	90845		7366	18	7.3	6.82
D-2000-W	128646		10431	26	10.3	9.4
D-2500-W	135330		10185	27	10.8	9.4
D-3200-W	186550		14040	37	15	12.9
D-4000-W	206480		15540	41	16.5	14.2
D-5000-W	268075		20175	54	21.5	18.9
D-6250-W	367117		27632	73.4	29.4	28.9
D-7500-W	472231		35544	78.0	31.4	34.5
D-8000-W	412960		31080	82.0	33.0	38.7
D-10000-W	536150		40350	108	43.0	41.8

Notes:

(1)Approximately 7% of the total heat load is rejected to ambient air, the balance to the water-cooled condenser.

(2)Based on cooling tower water 85°F to condenser, 95°F out of condenser, 78°F ambient wet bulb temperature.

(3)Based on water into condenser @ 60°F (city water). Water temperature out of condenser, 85°F.

(4)Kilowatt (Power) consumption by the refrigeration compressor motor.

(5)Heat amounts are expressed in B.T.U.H.

M. MAINTENANCE

A properly installed Air/Tak refrigerated air dryer requires very little maintenance to provide years of trouble-free service. A very simple routine maintenance program is all that is required. This program will consist of three (3) check points:

1.Drain Valve(s): Inspect and clean the Drain Valve(s) on a periodic basis.

2.Refrigeration Condenser: Inspect the refrigeration condenser for lint and dirt.

a)The refrigeration condenser should be checked for lint or dirt monthly in a clean environment and more often in a dirty environment. If the condenser is found to be dirty, it must be cleaned with low pressure dry air.

Inspect condenser fans; i.e., bent or broken blades, and for free rotation.

a)Check condenser fan(s), brackets and on motor shaft for tightness.

3.Check refrigerant lines for oily connections and vibration in lines. Check wiring for loose and broken wire ties. Check refrigerant sightglass for moisture. (See Troubleshooting Guide).

N. INSTALLATION OF REMOTE CONDENSER (OPTIONAL)

During installation of a Remote Condenser option, Air/Tak recommends the use of check valves or P-traps at condenser inlet and outlet.

TROUBLESHOOTING GUIDE

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