Krendl 500, Руководство пользователя, Страница: 21 / 59

Rev. Date: 3/14/18 Page 18
MODEL #500
General Maintenance (cont.)
AGITATOR MOTOR:
If agitator motor runs hot, activating the manual reset on motor, or if unit does not run properly, refer to troubleshooting
sections of manual. The agitator motor should start quickly and run smoothly. If not, shut motor off
immediately and check
the cause. Low voltage, incorrect power supply, or misconnected wiring could cause motor failure. These conditions void
the motor warranty. Overload conditions can be detected by checking the electrical current (amperage) compared with
nameplate current(amperage) located on the body of the motor.
AGITATOR MOTOR REPLACEMENT: Unwire motor from Main Control Panel. Remove drive chain and flip hopper up as
described at the beginning of General Maintenance section. Place a support block under motor to reduce stress while
removing four reducer flange bolts with a 9/16" socket wrench. (If rear bolts are difficult to reach, remove reducer unit from
lower frame for better access.) Pry motor from speed reducer a slight distance, using a large flat blade screwdriver placed in
one of the slots where they join together. Pull motor unit straight away from speed reducer, retaining key. If motor does not
separate easily call factory for assistance. (See illustration P) Before installing replacement motor, refer to motor nameplate.
Check connection of new cord for correct voltage (low or high) and PROPER ROTATION of
motor output shaft ( counterclock-
wise facing output shaft). Rotate keyways of motor shaft (D) and quill (input) of speed reducer to 12:00 o'clock position. (To
turn speed reducer shaft, remove chain on output of speed reducer.) Attach the key 3/4" off the end of the motor shaft (D) and
coat motor shaft with anti-seize compound. Align and insert the motor shaft carefully into the input quill. (A flat blade
screwdriver may be helpful to keep key in place as motor shaft is inserted or centerpunch indentation on motor shaft.) Secure
to flange with four hex bolts.
Caution: If the motor does not readily seat itself, check if key has moved axially along motor shaft, causing interference.
Tightening motor to reducer with excessive pressure against key will cause premature bearing failure on motor and reducer
and overheating of motor. Connect motor to Main Control Panel and check for correct rotation of
speed reducer output
shaft ( counterclockwise ). Reconnect drive chain and assemble unit.
BLOWER MOTOR:
Periodically remove Blower Filter and vacuum any material that has accumulated inside of blower box and around blower
motor. Blow out any remaining debris around motor and intake orifice of fan with compressed air. This will extend the life of
the blower significantly. Blower Filter life can be extended by occasional removing and blowing out with compressed air.
Filter should be replaced periodically depending on use. If blower produces noise or heat, refer to troubleshooting section of
manual.
(illustration Q)
Single 12.5 Amp (6 Amp 230 volt) 3-Stage Blower Double 12.5 Amp (6 Amp 230 volt) 3-Stage Blower
BLOWER REPLACEMENT: Unwire Blower from Main Control Panel and remove Blower Door by loosening the two hold down
clips. (See illustration Q) Take note of electrical connections on blower and remove wire nuts from lead wires. Loosen hose
clamp at the rear of the blower. Remove blower bracket assembly, secured with two bolts, from blower box. Loosen clamp
and hose from blower. Remove three bolts and spacers from blower bracket and remove blower. Reverse procedure for
assembly.