Pyromation Dual J-T-E-K - Manual (Page 30)

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FIELD CALIBRATION LOCKOUT
AND RE-ENABLE
The calibration lockout feature, prevents any field
calibration changes. The lockout remains in effect
until a lockout re-enable has been performed. Use
the following procedures to lockout or re-enable the
field calibration operation.
Lockout Procedure
1. Turn the thermometer off.
2. Simultaneously press and hold the CAL and the
CLEAR keys down and momentarily press the
ON/OFF key. Continue to hold the CAL and
CLEAR keys for at least 5 seconds.
Re-Enable Procedure
1. Turn the thermometer off.
2. Simultaneously press and hold the HOLD and
the CAL keys down and momentarily press the
ON/OFF key. Continue to hold the HOLD
and
CAL keys until the display blanks.