Instruction/ maintenance manual of the product SH20L50-A Friedrich
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SH15L30-A SH20L30-A SH20L50-A HG-SVC-PRTS-05 (4-05) Ser vic e & P ar ts Manual R oom Air Conditioners 50 & 60 Hz M ode ls 20 05.
2 TA B L E O F C O N T E N T S Specifi cations ............................................................................................................... .................... 3 Performance Data ...................................................
3 EV APORA TOR AIR TEMP . DEG. F EV APORA TOR TEMP . DEG. F CONDENSER TEMP . DEG. F Discharge Te m p Suction Te m p Liquid Te m p Super Heat Sub- Cooling OPERA TING PRESSURES ELECTRICAL RA TINGS R-22 REF . Evap CFM Motor RPM BREAKER FUSE Discharge Air Te m p .
4 COMPRESSOR WINDING TEST (Figure 2.) Remov e the co mpressor ter minal box cover and disconnect the wires from the ter minals. Using an ohmmet er , check c ontinuity across the following: COMPONENT OPERA TION AND TESTING COMPRESSORS Com pr ess ors ar e s ing le p has e , 2 08 /230 v ol t.
5 F AN MOTOR (Figure 4) A 230 volt single phase permanent spl it capacitor motor is used to dr ive the evaporator blower and c ondens er fan. A running capacitor is wired a cross the star t and run terminals of the motor . The motor is t otally enclosed and is prot ected with a line voltage ov erload loc ated int ernally of the motor .
6 RED DOT RUN CAP ACITOR FA N MOTOR COMPRESSOR FIGURE 7 RUN CAP ACITOR HOOK–UP CAP ACITOR, RUN A run capacitor is wired across the auxiliar y and main winding of a single ph ase permanent split capacitor motor s uch as the compressor and fan motors.
7 Note: The t emperature mu st be within the range li sted to check the th ermostat. Ref er to the trou bleshooti ng section in this manual for additional in formation on ther most at te sting. TEST Remo ve the wires from the th ermostat. T urn the thermostat to its coldest position.
8 LOW AMBIENT BYP ASS V AL VE (Figure 9) T h e H a z a r d G a r d u n i t i s d e s i g n e d t o o p e r a t e a t l o w outside ambient temperatures.
9 NOTE: This procedur e can be sped up by the use of heat lam ps, or by brea king the vacuum with refrigerant or dr y nitrogen at 5,00 0 microns. Pressure s ystem to 5 PSIG an d leav e in the sys- tem a minimum o f 1 0 minutes. R ecover refriger - ant, an d proceed with evacu ation to a pressu re of 200 mic rons or a minimum of 1 0 % .
10 NOTE: All inoperative compressors returned to Friedrich must have all lines properly plugged with the plugs from the replacement compressor . REFRIGERANT CHARGE 1 . The refrigerant charge is e xtremely c ritic al. Measure the charge carefully an d as e xactly as possible t o the namepl ate ch arge.
11 TROUBLESHOOTING PROBLEM POSSIBLE CAUSE TO CORRECT UNI T DOES N OT RUN. Power disconnected. Check power sourc e. System switch in “O f f ” position. Se t switch co rrec tly . Branch c ircuit fuse blown or circuit breaker tripped. Replace fuse, reset break er .
12 TROUBLESHOOTING (Co ntinu ed ) PROBLEM POSSIBLE CAUSE T O CORRECT COM PRESSO R AT T E M P T S T O ST ART , O R RUNS FO R S H O R T PERIOD S ONL Y . C Y CLES ON OV ER LOA D. Compress or attempts to st ar t before system pressures are equal ized . Allow a minimum of t wo ( 2) minutes to allow pressures to equalize before attempting to st ar t.
13 TROUBLESHOOTING (Co ntinu ed ) PROBLEM POSSIBLE CAUSE T O CORRECT FA N M O T O R D O E S NOT R UN. Defective switch (O n- Of f ) . Check c ontinuit y across ter minals 2 and 3. Fan c a p a c i t o r o p e n . Check by substituting a known good c apac itor of the same rating .
14 WIRING D IA GR AM MODELS SH 1 5L3 0 - A , SH20 L30 - A , SH20L5 0 - A.
15 HAZARDGARD CABINET P ARTS.
16 HAZARDGARD CHASSIS P ARTS.
17 HAZARDGARD P ARTS LIST REF DESCRIPTION P ART NO# MODELS CODE ELECTRICAL P ARTS SH15L30-A SH20L30-A SH20L50-A 1 COMPRESSOR 61 193549 1 600 1 COMPRESSOR 61 193550 1 600 1 COMPRESSOR 61 193565 1 600 2.
18 REF DESCRIPTION P ART NO# MODELS CODE CHASSIS P ARTS SH15L30-A SH20L30-A SH20L50-A 26 SHROUD, CONDENSER 61803601 17 2 0 26 SHROUD, CONDENSER 61804901 11 7 2 0 27 BRACE, COND.SHROUD 61802600 33 3 7 2 2 22 F AN BLADE, COND. 60542003 17 1 0 22 F AN BLADE, COND.
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HG-SVC-PRTS-05 (4-05) Use Factory Certifi ed Parts. FRIEDRICH AIR CONDITIONING CO. P ost Office Box 1540 · San Antonio, T exas 78295-1540 4200 N. P an Am Expressway · San Antonio, T exas 78218-5212 (210) 357-4400 · F AX (210) 357-4480 www .friedrich.
An important point after buying a device Friedrich SH20L50-A (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Friedrich SH20L50-A yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Friedrich SH20L50-A - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Friedrich SH20L50-A you will learn all the available features of the product, as well as information on its operation. The information that you get Friedrich SH20L50-A will certainly help you make a decision on the purchase.
If you already are a holder of Friedrich SH20L50-A, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Friedrich SH20L50-A.
However, one of the most important roles played by the user manual is to help in solving problems with Friedrich SH20L50-A. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Friedrich SH20L50-A along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
