MULTIQUIP WHITEMAN PRX Operation Manual page 41

SERVICE REMINDERS
After the initial 25 hours of operation, the digital display will
show a warning message indicating that machine service
is required (Figure 48).
Figure 48. Warning Message
(Machine Service Required)
If the hydraulic filter enters Bypass mode, the digital
display will show a warning message indicating that
hydraulic system service is required (Figure 49). Shut
down the equipment and service the hydraulic system
immediately.
Figure 49. Warning Message
(Hydraulic Filter Bypass Warning)
NOTICE
DO NOT operate the unit while in Bypass mode. This
can result in severe damage to the hydraulic system.
Refer to the Maintenance section for service procedures
and instructions on how to reset the service reminders.
PRX RIDE-ON POWER FLOAT • OPERATION MANUAL — REV. #1 (01/05/21) — PAGE 41
THERMAL MANAGEMENT MODE
Thermal Management mode automatically reduces rotor
speed if either the engine coolant or electric drive system
coolant reaches a higher-than-normal temperature. The
PRX will slowly reduce rotor speed until the temperature
is stabilized.
Temperatures are monitored at several locations throughout
the system: the engine, generator, generator controller,
right-side motor and controller, and left-side motor and
controller.
If any of these temperature readings exceed a preset limit,
Thermal Management mode will activate, and the system
will begin reducing machine load by gradually slowing
(derating) rotor speed in two phases.
Table 8. Thermal Management Mode
Temperature Limits (Phase 1)
Temperature °F (°C)
Engine 216 (102)
Controllers 57 (14)*
Motors 327 (164)
Table 9. Thermal Management Mode
Temperature Limits (Phase 2)
Temperature °F (°C)
Engine 220 (104)
Controllers 46 (8)*
Motors 338 (170)
*Controller temperature values represent degrees remaining before
overheat occurs, e.g. 46°F/8°C remaining before overheat occurs.
OPERATION
Rotor Speed
Derating Interval
Every 2 minutes
Rotor Speed
Derating Interval
Every 30 seconds