- 67 - GD-70D
Maintenance Mode
From Detection Mode, press
and hold the MODE key for
three seconds.
SIH4
1-8.M MODE
Press the ▲ key until the
Maintenance Mode screen
displays. (For GD-70D-EA
units, the Maintenance Mode
M MODE
MAINTENANCE
In "1-8.M MODE", press the
SET key.
M MODE
Then press and hold the SET
key again for three seconds.
M MODE
Maintenance Mode
Perform a test with the gas.
The reading changes and the
alarm lamp lights up, but the
alarm contacts are not
activated and the 4-20 mA
output does not track the
changes.
GAS TEST
→
SET
GAS TEST
▲↓ ↑▼
(Alternate Display)
SIH4
Perform a zero adjustment.
ZERO
→
SET
⇒P86
▲
▼
Perform a span adjustment.
SPAN
→
SET
⇒P86
▲
▼
A1: ALM1
A2: ALM2
○: Lamp off