Carrier 50UA-UH 135 - Application Data: Belt Tension and Filters; Belt Tension Adjustment Procedure; Air Filter Replacement Process

˄ƙ 
˄ƖʾƱ½ÄÌ̽ÆËÁÇÆ
On delivery, the drive belts are new and correctly tensioned.
After the belts have run-in, stop the belt drive and check
the belt tension. Running the belts under full load for an
extended period of time will seat the V-belts into the
sheave grooves. V-belt tension will drop after the initial
run-in and seating process. This is normal. Adjust the belt
tension as necessary.
Since tension in V-belts will drop after the initial run-in and
seating process, failure to check and re-tension the belt will
result in low belt tension and belt slippage. This slippage
will result in premature belt failure. Before adjusting the
tension, make sure that the pulleys are correctly aligned.
Belt tension adjustment (
Fig. 9)
1. Measure the span length (L
s
).
 -EASURETHEDEmECTIONFORCEPFROMTHEMIDDLEOF
THESPANINORDERTOHAVEADEmECTIONQOFMMPER
100 mm of span length from its normal position.
 4HEMEASUREDDEmECTIONFORCESHOULDBEBETWEEN.
and 28 N. If it is less than 19 N, tighten the belt. If it is
more than 28 N, loosen the belt.
See chapter
7.8 for further information on indoor fan air
mOWADJUSTMENT
Á¿ƖˆƘ½ÄÌ̽ÆËÁÇÆ
½Ŵ½»ÌÁÇÆÉ
½Ŵ½»ÌÁÇÆ¾ÇÊ»½È
Span length L
s
FILTERS
˄ƖʿƱÁÊŲÄ̽ÊʽÈĹ»½Å½ÆÌ
/PENTHElLTERACCESSPANELTHENREMOVEANDREPLACETHE
lLTERSBYSLIDINGTHEMFROMTHERAILS#HECKTHElLTERlRE
CLASSIlCATIONACCORDINGTOLOCALREGULATIONS
Á¿ƖʾʽƱÁÄ̽ÊʽÈĹ»½Å½ÆÌ
24