HRX-OM-Q026 
Chapter  6   Alarm  Notification  and  Troubleshooting 
 
6.3 Troubleshooting  HRSH Series 
 
  6-8 
6.3.2 How to release Fan Breaker Trip alarm 
 
Water-cooled type model does not generate this alarm. 
 
1.  Turn OFF the earth leakage beaker of the user's power supply.   
 
2.  Remove four screws to remove the front panel for the electrical unit. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Fig. 6-1: Removal of the front panel of the electrical unit 
 
3.  Hold the handle and pull up the front panel of the electrical unit, and remove it. 
 
 
 
 
 
 
 
 
 
 
 
 
Fig. 6-2: Removal of the front panel of the electrical unit 
Be sure to lock out and tag out the breaker of the facility power supply 
(user's power supply) before wiring. 
Front  panel  for  the 
electrical unit 
HRSH-A-20-B1, 
HRSH-A-40-
Note: Turn OFF the breaker. 
The front panel of the 
electrical  unit  cannot 
be  removed  without 
turning  off  the 
breaker.