Hagie 204SP, Operator'S Manual, Page: 122 / 127

SECTION 9 –
MISCELLANEOUS
9-21
Only one unit lowers slowly • Faulty valve
• Faulty lower poppet on lift
valve
• Replace valve
• Remove, clean, or replace
All units lower slowly • Hydraulic oil not at operating
temperature
• Allow time for oil to warm up
In MANUAL mode, more than
one unit lifts or lowers from one
up/down switch • Faulty valve • Replace valve
In AUTO mode, more than one
unit raises from photo sensor • Faulty valve • Replace valve
In AUTO mode, wrong unit
raises from photo sensor • Cylinder hoses are connected
to the wrong cylinder
• Attach correct hoses to proper
cylinder
No units will lift • Faulty Auto/Manual Switch
• Blown Fuse
• Faulty #1 valve, coil, or loose
coil mounting nut
• Loose wire connections
• Faulty wire connections
• Faulty main wire assembly
• Replace control box
• Find short in wire, repair, and
replace fuse
• Tighten nut or replace coil
• Find loose connection, tighten
• Replace or repair
• Replace or repair
Only one unit will not lift • In MANUAL mode, faulty Up/
Down Switch
• Light photo sensor assembly
• Faulty valve, coil, or loose coil
mounting nut
• Loose wire connections
• Lights of photo sensor not
lined up with reflector
• Faulty row wire assembly
• Faulty sensor connector wire
assembly
• Replace control box
• Replace photo sensor
• Tighten nut or replace coil
• Find loose connections,
tighten
• Line up sensor with reflector
• Replace or repair
• Replace or repair
No units will lower • Faulty Auto/Manual Switch
• Blown fuse
• Loose wire connections
• In AUTO mode, LS valve
assembly unplugged
• Replace switch
• Find short in wire, repair, and
replace fuse
• Find loose connection, tighten
• Plug in wire assembly