Fig. 10 Coolant pre-heating
1
Operating panel
2
Connection for the coolant pre-heater
3
Motor block
4
Coolant pre-heating
The ideal coolant pre-heating period is 2-3 hours before the machine is started. A pre-heating peri‐
od of more than 3 hours is not necessary, as the maximum effect has already been achieved within
this period (thermal balance).
Continuous operation of maximum 6 hours must be followed by a rest of approximately 3 hours.
4.6.2.2 Option bc
Frost protection
Control air is mixed with an alcohol-based antifreeze to prevent control and regulating devices
freezing. This considerably lowers the freezing point of any moisture in the air.
Fig. 11 Frost protector
1
Control line (frost protection)
2
Frost protector
3
Shut-off ball valve
4
Control line (bypass line)
Operating the machine in cold temperatures:
The frost protector is activated when the machine is started or stopped in ambient temperatures
below freezing. Due to the anti-freeze in the air flow, valves and control lines in the interior are
moistened preventing a freezing of the control and regulating system.
4
Design and Function
4.6
Options
50
Operator manual Portable compressor
M 64
No.: 9_5898 26 E
RAMIRENT