Electrical Troubleshooting - Steris Cmax Operator's Manual

Table 5-2 . Troubleshooting (LCD Message) Chart (Cont'd)
FAULT DISPLAYED
BATT FUSE
BATT DEF
CHARGER DEF
POWER DEF
PUMP DEF
VALVE DEF
MOTOR DEF
MOTOR FAIL
SLIDE DEF
SLIDE FAIL
PUMP FAIL
BAD VERSION
VOLTAGE PEAK
VALVE FAIL
SLIDE HEAD or SLIDE FOOT

5.2 ELECTRICAL TROUBLESHOOTING

CAUTION – POSSIBLE EQUIPMENT
DAMAGE: Isolate the coil and/or pump
motor from the control by disconnecting the
wires on the motor terminal board, or slip the
wires off the solenoid coil.
See Troubleshooting Guide (Table 5-1) for a sequence
of steps to use to identify and correct most electrical
problems encountered. Also refer to the electrical
schematics behind R
EFERENCE
the Troubleshooting Guide.
Refer to S 3.3, H
ECTION YDRAULIC
of the problem appears to be hydraulic.
FAULT DESCRIPTION
No fuse or blown fuse.
Battery voltages differ by more than
0.6 V.
Battery charger is defective or fuse
(inside the charger) is blown.
Transformer too hot or fuse F2 is
blown. Table still operates on battery
power.
No hydraulic pump control.
No valve control.
No SLIDE motor control. SLIDE
inoperative.
The power control is always on.
SLIDE inoperative.
No SLIDE control. SLIDE inoperative.
SLIDE continuously
SLIDE inoperative.
Pump does not shut off.
Hand control software version is
incompatible with control board
software version.
Battery voltage reaches 31 V.
Valve does not shut off.
SLIDE is not within 1" (25 mm) of
center position when unlock floor
locks is attempted.
D tab when using
RAWINGS
S , when the cause
YSTEM
764333-268
Check fuse; plug power cord into
facility power.
Check voltage of each battery;
replace battery.
Check fuse F1; change battery
charger.
Wait for transformer to cool; check
fuse F2 (inside power supply);
replace power supply.
Change power supply.
Change control board.
Replace sliding board.
Replace sliding board.
Change sliding board.
operating. Replace sliding board.
Change power supply.
Replace Hand Control.
Replace power supply.
Replace control board.
Position SLIDE to 0".
Electrical Troubleshooting Guidelines:
• Before replacing any PC boards or other components
suspected of being defective, ensure all cable plugs are
fully inserted into their respective jacks.
• Ensure all cable pins are installed and locked into place
on the plug(s).
• When making any dc voltage measurements,
reference the dc ground, not the chassis ground.
(These two points are isolated from each other.)
The pump motor and/or the hydraulic solenoids can
be checked by applying 24 Vdc only directly to the
component.
• To completely disconnect power to the table, the line
cord as well as the batteries must be disconnected.
• When resoldering or replacing any of the table
microswitches, isolate the control by disconnecting its
associated plug.
5-7
FAULT ACTION