SERVICE 6
AQUATECH OPERATIONS, SERVICE AND PARTS MANUAL
A Product of Hi-Vac Corporation
SERVICE
ELECTRICAL SYSTEM
CONDITION
PROBABLE CAUSES
REMEDIES
NO POWER
Ignition/unit power switch not “on”.
Turn ignition/unit power
switch “on”.
BOOM VALVE NOT WORKING
Faulty solenoid valve.
Check for voltage at
solenoid. Replace.
FUSE BLOWN
(#1 TERMINAL BLOCK,
#2 AMP REPLACEMENT).
1. Frayed or broken harness wire.
2. Short circuit in solenoid(s) wiring
connection.
3. Switch terminal arcing within
housing.
1. Repair or replace.
2. Check for pinched or
bare wire connections.
3. Secure terminal to post
connections on switch.
PTO WON’T RE-ENGAGE DRIVE
AXLE.
Switches turned off in wrong
sequence.
Unit power must be last
switch turned off.
PTO DOES NOT DISENGAGE
DRIVE AXLE.
Faulty solenoid valve
Check for voltage at
solenoid. Replace
PENDANT BOOM SWITCHES
FUNCTION ERRATICALLY.
1. Push button, switch terminals
loose or disconnected.
2. Push button switch contacts
burned or disconnected.
3. Water in pendant
1. Tighten or reconnect. 2.
Replace switch unit.
3. Dry out pendant control
and seal leaks.
FLAPPER VALVE INTAKE
CYLINDER ON BOOM
INOPERATIVE.
1. Pneumatic valve solenoid coil
burned out.
2. Valve spool stuck or unsealed.
3. Wiring from valve to control box
broken or disconnected.
1. Test and replace if neces-
sary.
2. Disassemble, clean, or
replace.
3. Repair and replace.
IMPORTANT!
Do not attempt to remedy any electrical problems without first examining the schematic wiring diagram and control
wiring circuit drawing (see Electrical Section). Check truck chassis battery and cell condition. Use proper
instrumentation for current and continuity test results.
(A) Continuity- Use OHM scale recorder or battery powered continuity test light.
(B) Current- The circuit must be opened to obtain current reading with the volt- meter; therefore, it is more
convenient to use a 12 VDC test light.
TROUBLESHOOTING COMMON PROBLEMS
The following is a list of possible problems which may be encountered during the life of this machine. Probable
causes are listed in this section together with recommended solutions to these problems. If the resolution of these
problems or any other problems are not readily apparent, contact your local authorized X-Vac dealer.
Содержание X-Vac Hydro Excavator X15 Series
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