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The ervice manual for my 1982 Kenwood KR-1000 receiver is great! Full detail on all circuits with part number detail. I will definately be ordering more manuals for my other vintage equipment! Order was fulfilled quickly! Very efficient ordering process! Thnaks for your help! Great site!
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Everything in the manual was excellent except for a couple of pictures of specific areas in the unit that were a little dark. Owners Manuals re-sent the pdf file & the problem was corrected. Excellent product! George
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Thanks for offering this item at such a good price. Proved handy in identifying the part I was looking for my set.
Thanks again.
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This is the original manufacturers service manual, with detailed info on the circit boards, explosion drawings of all parts in assembly order, and tuning instructions. The only thing missing is the information on the dimensions of the various drive belts. mail me if you need them. gcrossman_at_aol.com
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Ordered service manuel for a hard to find plasma tv - your company made it easy to find and purchase - I will use you again
Thanks for your help
RI-129W RO-129W
4. Hot-Keep This function automatically controls the on-off operation of the indoor fan motor in accordance with the on-off operation of the compressor during the heating operation, thereby preventing the air conditioner from delivering a cold air when the compressor is off. When the room temperature exceeds the thermostat line �H1�, the compressor is turned off, and the indoor fan motor is turned off after rotating at �UL� for 30 seconds. 3 minutes after turning off the compressor, the compressor is turned on for 3 minutes. (below thermostat line H01). While over H01, the compressor is off. At 10 seconds after turning on the compressor, the indoor fan motor is turned on. The next compressor OFF time is for 3, 8 or 15 minutes according to the room temperature (the time increases with a rise of room temperature).
3 min. Compressor ON OFF ON Indoor fan motor UL OFF 30sec. Thermo off 10sec. time 30sec. 10sec. UL 3 min. (Notes) 3 or 8 or 15min. (Notes)
Pipe temperature ( C)
6. Overheating protection system When overloading occurs during the heating operation, this system controls the outdoor fan motor according to the indoor pipe temperature to prevent the overloading of the compressor and restrain the rise in high pressure. When the indoor pipe temperature exceeds U1�C, the outdoor fan motor is turned off, and when the indoor pipe temperature falls U2�C, the outdoor fan motor turns on. If three minutes elapse after turning off the outdoor fan motor, the outdoor fan motor is turned on, when the indoor pipe falls U1�C.
OFF U1 ON U2 U2 U1 OFF ON
Within 3 minutes
Over 3 minutes
Figure Y-9 Table Y-3 Fan speed Line U1 U2 7. Current control This system, in order to prevent overcurrent during heating operation, controls the outdoor fan motor and changes the indoor fan motor speed by detecting total current. When the current exceeds P1, the compressor is automatically stopped. When the current exceeds P2, the outdoor fan motor is automatically turned off, and when the current falls below P4, the outdoor fan motor is turned on. When the current exceeds P3 and the indoor fan speed shifts down because of cold air(5. Preheat air flow), the changes in the indoor fan speed shifts up as follows. OFF UL, UL L And when the current falls bellow P5, the indoor fan speed shift up is canceled.
P1 10.5A P2 P3 9.4A 8.5A 7.4A 6.4A
H 53�C 49�C
M 54�C 50�C
L 54�C 50�C
Notes: Compressor is off when compressor OFF time is 15 minutes.
Figure Y-7 5. Preheat air flow This function is intended to prevent cold air from being discharged when the heating operation starts or when defrosting. When the indoor pipe temperature is below 29�C at the beginning of the heat operation or after defrosting, the indoor fan motor stays. When the indoor pipe temperature gets higher than 29�C, the fan motor is turned on at speed �UL� after compensation of starting. When the indoor pipe temperature exceeds 35�C, the specified fan speed is restored. When the indoor pipe temperature falls below 30�C, the fan speed shifts down to �UL�. And, when the indoor pipe temperature falls below 24�C, the fan motor turns off. Then, over 29�C , it turns on again at speed �UL�.
35 30 29 24 time Indoor fan motor OFF UL Pipe temperature transition
P4 P5
ON UL OFF UL
Time Outdoor Indoor Compressor OFF
Fan motor Fan motor OFF Shift UP
Figure Y-8
11
Figure Y-10
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