45
Installation and Operation Manual
AccuMax SP
Symptom
Probable Cause(s)
Corrective Action
Pump does not run.
ERR.HY
Hydraulic pump not properly
Check and attach cables
display.
connected to driver box.
to pump and driver box.
Truck hydraulics not running.
Engage hydraulic PTO.
Pump runs but produces no flow.
Pump is not primed.
See Foam Pump Priming
procedures in Section 10.
Pump loses prime, chattering
Air leak in suction hose or inlet
Remove suction hose and test
noise, pressure fluctuates.
fittings.
for leaks by pressurizing hose
with water. Make sure thread
sealant has been used on all
fittings.
Suction line is blocked, collapsed.
Remove suction line and inspect
it for a loose liner or debris
lodged in hose. Avoid all un-
necessary bends. Do not kink
hose.
Clogged suction strainer.
Clean strainer.
Defective control cable or
Replace control cable.
bent pins.
Figure 14-2
Electrical Wiring Diagram
Troubleshooting Continued on Next Page
Pump runs for 8 to 10 seconds
then shuts down.
ERR.HY
may
be flashed on display.
Flowmeter
Cable
Flowmeter
Control
Cable
To 12 or 24 VDC
Small
Beads
Digital Display
Control Module
Large
Beads
Foam
Flowmeter
Foam Tank
Low-Level
Sensor