Overload Protection, Cooling Fan And Overheat - Bowens DUO 2400 PACK Operating Instructions Manual

Overload Protection, Cooling Fan And Overheat

A manual reset Circuit Breaker and thermal cut-out system is provided to prevent the
Pack from overheating under heavy conditions of use.
The operation of the thermal cut-out is highly dependent upon the conditions of use
and is typically as follows:-
• Pack working normally - Pack under moderate use at normal operating
temperature with low to moderate 'POWER' setting, 'SLOW' charge rate and/or
slow to moderate flash rate.
• Pack NOT 'READY', AC Power Switch neon lit, ALL other control panel
indicators off - Pack was previously under heavy use with moderate to maximum
power setting, fast recycling and warm to hot. Thermal cut-out has operated and
will be automatically reset after a cooling period.
• Pack NOT 'READY', AC Power Switch neon AND one or more other indicators
on the control panel are lit and the top panel Circuit Breaker has operated. Pack
previously under very heavy use with fast recycling and hot. In this condition the
Circuit Breaker button will project from the panel and may be manually reset after
allowing a short cooling period. Under certain conditions this may also be
combined with operation of the thermal cut-out.
A thermostatically controlled fan senses the internal temperature within the Pack.
Under normal conditions of use the fan is unlikely to operate but when the Pack is
used heavily the fan will cut in to lower the internal temperature allowing many more
shots to be taken. Providing that power is applied and the Pack is switched on, the fan
will operate independently of the Circuit Breaker and thermal cut-out.
Operation of the overload protection can be avoided by checking and modifying the
conditions of use:-
• Ensure that the cooling vents of the Pack are clear of obstructions.
• Use the 'SLOW' charge setting if the 'FAST' setting is not necessary.
• Reduce the flash rate.
- 11 -