Reference
Only
Manitowoc
Published 05-16-17, Control # 233-03
10-13
999 SERVICE/MAINTENANCE MANUAL
TROUBLESHOOTING
10
Problem 11
Front or rear load drum will not reach load drum maximum speed.
POSSIBLE CAUSES
Partial control from handle to PC; Partial control voltage
from PC to pump EDC; Pump or motor is damaged.
CHECKS
When moving load drum control handle fully in both directions, diagnostic display
DRUM 1or 2 screen (bank 1) obtains 100% pump control in each direction?
Yes
No
When moving load drum handle fully in both directions, diagnostic
display DRUM 1 or 2 screen (bank 2) obtains 100% pump control
in each direction?
Repair or replace
control handle.
Check for control voltage of +2.3 volts or more and coil
resistance of around 19 ohms at pump EDC. (See Test 13.)
Consult dealer/factory.
Yes
Voltage and
Coil Ok
Remove plug at motor port M5 and check
orifice for obstruction. (See Test 15.)
Repair or replace coil or wiring.
Obstruction
No Obstruction
Clean or replace
orifice.
Check pump and motor for
leakage. (See Test 21.)
Repair or replace pump or motor.
Voltage and/or
Coil not Ok
No
When moving problem handle fully in both directions,
does A1 diagnostic screen (banks 1 and 2) read 38 to
120 in lower or 136 to 215 in raise?
Yes
No
Repair or replace control handle/wiring.
Содержание 999
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Страница 2: ...R e f e r e n c e O n l y ...
Страница 4: ...R e f e r e n c e O n l y THE ORIGINAL LANGUAGE OF THIS PUBLICATION IS ENGLISH ...
Страница 173: ...R e f e r e n c e O n l y Manitowoc Published 05 16 17 Control 233 03 4 19 999 SERVICE MAINTENANCE MANUAL BOOM 4 ...
Страница 174: ...R e f e r e n c e O n l y BOOM 999 SERVICE MAINTENANCE MANUAL 4 20 Published 05 16 17 Control 233 03 ...
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