129
fi
g. 8.88
fi
g. 8.89
8 - A
ਢਢਤਲਲਮਨਤਲ
Hydraulic oil heater / recirculator
(optional)
The optional hydraulic oil heater/recirculator is an addition to the normal F2 Series hydraulic
circuit to warm up the hydraulic oil before operating the motorized unit. Warming up the
hydraulic oil will allow smooth operation and avoid damages and premature wear to the
equipment. The optional hydraulic oil heater/recirculator shortens the engine warm-up time
required and facilitates the operation of the equipment.
1-
Prepare and start the engine as described in the preparation and startup instructions
on p. 69, for a gas-powered unit and on p. 71 for an electrical unit.
2-
Let the engine run at full throttle for about fi ve minutes to allow it to reach operating
temperature and warm up the pump.
3-
Once the engine and pump are warmed up, turn the oil heater/recirculator switch to
the
ON
position (fi g. 8.89). At this point, the sound of the engine will change as it will
now be under load.
If the engine stalls, it has not been allowed suffi cient time to warm up. Start the engine
again and let it run at full throttle until it is warmed up properly before turning on the
heater/recirculator.
Using the oil heater/recirculator
Oil heater/recirculator
switch
Location of the
optional oil heater/
recirculator switch
(when installed)
4-
The typical run time of the oil heater/recirculator will depend on the oil temperature as
well as the ambient (outdoor) temperature. The oil heater/recirculator will warm up the
oil at an average rate of 6 °F/min (3,33 °C/min). The minimum oil temperature required
to ensure problem-free operation is around 60 °F (15,5 °C).
For an ambient (outdoor) temperature of 0 °F (-17,8 °C), the heater/recirculator must
be used for around 10 minutes to warm up the oil to 60 °F (15,5 °C). If the heater/
recirculator fails to warm up the oil suffi ciently, contact a qualifi ed technician or the
distributor/service center. For more information about qualifi ed technicians, refer to
p. 7 of the
Performance and Safety Rules
section.
5-
Once the oil has reached the appropriate temperature, turn the heater/recirculator
switch to the
OFF
position.
6-
Resume normal operation.
It is recommended to use the oil heater / recirculator when the temperature is below
32 °F (0 °C).
Until the oil has warmed up inside the gear box and throughout the whole hydraulic system, there may be
high pressure alerts on the display screen and users on the platform may experience jolts when the unit
moves up or down the mast.
q
I
3
