035-19569-101 (0109)
6-1
GB
6 OPERATION
CAUTION
If the oil heater is de-energised during a
shutdown period, it must be energized for 12
hours prior to starting the compressor.
6.1 Oil Heater Operation
The oil heater operation is controlled by the graphic
control centre (OptiView). The heater is turned on and
off to maintain the oil temperature to a value 27.7 °C
above the condenser saturation temperature. This is
the target value and if the oil temperature falls to 2.2 °C
or more below the target, the heater is turned on. It is
turned off when the oil temperature increases to 1.6 °C
above the target value.
If the target value is greater than 71°C, the target defaults
to 71°C. If the target value is less than 43.3°C, it defaults
to 43.3°C.
To prevent overheating of the oil in the event of a control
centre component failure, the oil heater thermostat
(1HTR) is set to open at 82°C.
6.2 Checking the Oil Level in the
Oil Reservoir
Correct oil level - During operation, the oil level should
fall to the "Operating Range" identifi ed on the vertical
oil level indicator label. (See below).
LOW OIL OPERATING RANGE OVER FILL
If the oil level during operation is in the "Over Full" region
of the oil level indicator, oil should be removed from the
oil reservoir, This reduces the oil level to the "Operating
Range".
If the oil level during operation is in the "Low Oil" region
of the oil level indicator, oil should be added to the oil
reservoir (refer to Oil Charging Procedure, Section 7).
CAUTION
Comply with Local Regulations when removing
or disposing of oil.
6.3 Start-up Procedure
6.3.1 Pre-Starting
Prior to starting the chiller, observe the graphic control
centre (OptiView). Make sure the display reads SYSTEM
READY TO START.
To pre-start the chiller, use the following procedure:
1. Oil Heater – The oil heater must be energised for 12
hours prior to starting the chiller.
2. Prior to start, the clock must be programmed for the
proper day and time. Any setpoints to be changed
may be programmed. All control centre setpoints
should be programmed before the chiller is started
(refer to 160.54-OI for details).
To Next Page
Loading...
