Mec 3072ES, Руководство по обслуживанию и запасным частям

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PROBLEM REMEDY/SOLUTION POSSIBLE CAUSE
"3072ES / 3772ES / 3772ES HD" Service & Parts Manual October 2008
Page 4-31
Lift/Lower
Platform will not
Raise Exce ss ive weight o n Platfo r m
Lift Relief valve o u t of adj us tme n t
Lift Valve S V-1 n ot e n e r gized
Lowe r i n g valve S V-5 s t u ck ope n
(located at ba s e of lift cyli n de r / s )
Level S e ns o r o u t of level
(platfo r m elevated above 10 feet)
Mai n s y s tem p r e ssur e i n adeq u ate
Batte r ie s Di s cha r ged
S y s tem I n te ru ptio n
Platform will not
lower or lowers
slowly
Lowers but not
completely
(3772E S )
Emergency lowering
not working
Red u ce weight to withi n platfo r m capacity
Adj us t r elief valve to r ated capacity
Check wi r i n g to lift valve
Check EZ-Cal me ss age o r fla s h code
Check a n d r emove co n tami n atio n f r om valve/ s .
E-Dow n cable damaged (3072E S o n ly)
Repo s itio n machi n e to fi r m level sur face.
Check level s e ns o r f un ctio n us i n g EZ-Cal
Check p u mp o u tp u t p r e ssur e
Check batte r y voltage.
Clea n , s e r vice a n d cha r ge batte r ie s .
Check HELP o r MODE me ss age o n EZ-Cal
Mai n te n a n ce Lock i n mai n te n a n ce po s itio n
Lowe r i n g valve n ot e n e r gized
Lowe r i n g valve n ot s hifti n g
Lowe r i n g o r ifice (ORF-3) pl u gged
S y s tem I n te ru ptio n
Ret urn Mai n te n a n ce Lock to the s towed po s itio n
Check wi r i n g to lowe r i n g valve/ s located o n lift cyli n de r / s .
Check fo r EZ-Cal me ss age o r fla s h code
Clea n deb r i s .
Check fo r damage.
Replace
Clea n o r ifice/ s located i ns ide ho s e fitti n g o n each lift cyli n de r .
Check HELP o r MODE me ss age o n EZ-Cal
Dow n valve o n o n e cyli n de r i n ope r ative
E-Dow n cable b r oke n o r f r ayed (3072)
Lowe r i n g valve n ot s hifti n g
Lowe r i n g o r ifice pl u gged
Check valve coil s a s de s c r ibed i n Platfo r m will n ot lowe r o r lowe rs s lowly
Replace E-Dow n cable
Clea n deb r i s .
Check fo r damage.
Replace
Clea n o r ifice
3772E S ONLY E-Dow n batte r y di s cha r ged
Valve coil failed o n eithe r cyli n de r
Cha r ge batte r y.
Check cha r ge diode & co nn ectio ns
Te s t, r eplace
Lowers but not
completely Dow n valve o n o n e cyli n de r i n ope r ative Check valve coil s , wi r i n g
TROUBLE Table continued
continued…