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HITACHI
EX1200-7 Excavator
FAULT
*ERR error code
*Check filter alarm
Temperature / CO2 error
Pressuriser running at full speed/noisy
Filter blocking quickly
Display blank
Controller showing 0.0 pressure
Low pressure alarm
Pressuriser not working
Access Codes:
BREATHESAFE SYSTEM TROUBLE SHOOTING GUIDE *TOUCH CONTROL
POSSIBLE CAUSE
Poor sensor connection
Corrupted coding
Service hour timeout
Sensor not connected
Filter blocked
Door or window open
Cabin sealing capacity not adequate
Sense pipe blocked
Internal sensor damaged
Defective cabin sealing
Pre-cleaner failed
Poor power supply
Failed controller
Fresh air filter blocked
Door or window open
Cabin sealing capacity not adequate
Pressuriser not operating
Pressure sense tube blocked
Poor power supply
Poor earth
Motor faulty
Site Access: 7597
SOLUTION
Remove & refit pod connection cable
Access factory setup - default reset - pin 6759
Access Check Runtime menu - reset hours via 7597 code
Fit sensor or disable via site access CO2 & or temperature menu
Service filter
Ensure doors & windows securely shut
Perform pressure test procedure & seal leak points as required
Ensure clear & not bent
Replace controller
**No need to change setpoint
Perform pressure test procedure & seal leak points as required
Check operation & replace if necessary
Check mains supply fuse & correct voltage
Check voltage & 20AMP supply/connections at pin 1 @ monitor
Check earth continuity at controller pin 12
Replace monitor
Check filter condition & replace if required.
Ensure doors & windows securely shut
Perform pressure test procedure & rectify cab sealing
Ensure correct voltage 12v or 24v to pressuriser motor pin A
Check 1.6V - 10V present at motor Pin C
Check 20A Supply fuse
Check earth continuity Pin B
Unplug at monitor & ensure clear flow to external of cabin
Ensure pressure tube fitted correct port A
**No need to change setpoint
Check 20A mains fuse & correct voltage
Ensure adequate wire size & no voltage drop
Ensure correct voltage 12v or 24v to pressuriser motor pin A
Check 1.6V - 10V present at motor Pin C
Check earth continuity @ motor pin B
Replace TL4M
Factory Setup: 6759
14
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