Rapid 7500 136, Инструкция по установке, эксплуатации и обслуживанию

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SECTION 19: T
ROUBLESHOOTING
129 of 143
19.2 Supply Fan
PROBLEM POSSIBLE CAUSE SOLUTION
Fan motor does not r u n Damper limit s w itch not closed or inoperati v e. Repair or replace s w itch.
Motor thermal o v er-loads tripped. For tripped condition-reset.
F u ses b lo w n or missing. Replace.
External po w er so u rce lacking. Ha v e incoming po w er lines checked.
Motor inoperati v e. Repair or replace.
Fan motor r u ns, bu t fans do
not s u pply eno u gh air
Belts b roken or loose. Readj u st or replace.
Intake filters dirty. Replace or clean.
O b str u ction in intake. Check dampers for proper opera-
tion. Clear all intake passages of
o
b str u ctions.
Fan w heel loose on shaft. Reposition and tighten.
Access doors and panels not closed. Close.
Excessi v e fan noise Fan b earing Replace.
Fan shea v e loose on shaft. Tighten.
Belts not adj u sted. Readj u st.
Fan propeller loose on shaft. Reposition and retighten.
Fan propeller r ubb ing. Loosen setscre w s. Reposition w heel
and tighten.
Fan propeller dirty. Clean.
Foreign article in fan. Remo v e.