▪ The solenoid valve(s) in the gas module close, to switch o the supply of nitrog
en
to the pump.
▪ The solenoid valve(s) in the temperature control manifold(s) de-energise with loss
of temperature control.
▪ The pump display terminal will display '1.01 ALARM/STOP ACTIVATED' (if
connected) or it can display ‘ALARM 186.01/ DP INV 0040 000 / EMS’.
▪ For pXH booster pump, the PDT will display '801.01 ALARM/STOP ACTIVATED' (if
connected) or it may display ‘ALARM 825.01/ DP INV 0040 000 / EMS’.
▪ The Running LED will go o.
▪ The Alarm LED illuminates.
▪ For TX variants, the exhaust heaters remain powered on.
▪ Booster heaters on TX variants (where installed) switch o.
6.3 Gas module conguraon
6.3.1 iXM Varimode gas module adjustment procedure
The factory default gas ballast ow seng for the Varimode gas module is 44 slm.
The default low warning set-point for the Varimode gas module while gas ballast is on is
10 slm, unless the pump is in green mode.
The gas ballast seng can be adjusted by the rotaon of the gas ballast adjuster screw
accessible from the rear of the pump enclosure.
If a dierent low warning set-point other than 10 slm is required aer the variable
ballast ow seng has been changed from its default nominal 44 slm seng, then:
1. With the PDT command, select the N
2
ow w
arning menu, provided that the pump
is running and there is ow above 10 slm. Wait up to 30 seconds to make sure N
2
ow is in a steady state.
2. Aer a 5 second c
ountdown delay, the pump will use the last spot reading of the
N
2
ow rate to dene a new low and high warning threshold near to the actual
nominal ow selected. This will be stored on the parameter in the low and high
warning thresholds and will be displayed on the PDT. The value stored will be 30%
(congurable) less or more than the current ow value.
▪ Use PDT up and down keys to change the low warning threshold in a range of
30% less than curren
t nominal N
2
ow (with a minimum low warning
threshold of 5 slm).
▪ If the seng is aempt
ed when a varimode gas module is not present, there is
no valid ow reading at the start, then the PDT will display: 'CANNOT SET NO
READING'.
▪ If the ow uctuates by more than 10 slm during the 5 second countdown
delay, then the PDT will display: 'CANNOT SET FLOW CHANGING'. The
countdown will then be cancelled and the seng is aborted.
If the ow reading goes beneath a value where calculang 30% less than the current
ow will be below 5 slm, then the PDT will display 'CANNOT SET LOW READING'. The
countdown will then be cancelled and the seng aborted.
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