Gas Module Configuration; Ixm Varimode Gas Module Adjustment Procedure - Edwards iXM Series Instruction Manual

▪ The solenoid valve(s) in the gas module close, to switch off the supply of nitrogen
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 off.
▪ The Alarm LED illuminates.
▪ For TX variants, the exhaust heaters remain powered on.
▪ Booster heaters on TX variants (where installed) switch off.

6.3 Gas module configuration

6.3.1 iXM Varimode gas module adjustment procedure

The factory default gas ballast flow setting 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 setting can be adjusted by the rotation of the gas ballast adjuster screw
accessible from the rear of the pump enclosure.
If a different low warning set-point other than 10 slm is required after the variable
ballast flow setting has been changed from its default nominal 44 slm setting, then:
1. With the PDT command, select the N
is running and there is flow above 10 slm. Wait up to 30 seconds to make sure N
flow is in a steady state.
2. After a 5 second countdown delay, the pump will use the last spot reading of the
N
nominal flow 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%
(configurable) less or more than the current flow value.
▪
▪
▪
If the flow reading goes beneath a value where calculating 30% less than the current
flow will be below 5 slm, then the PDT will display 'CANNOT SET LOW READING'. The
countdown will then be cancelled and the setting aborted.
M56635880_D
M56635880_D - Operation
flow rate to define a new low and high warning threshold near to the actual
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Use PDT up and down keys to change the low warning threshold in a range of
30% less than current nominal N
threshold of 5 slm).
If the setting is attempted when a varimode gas module is not present, there is
no valid flow reading at the start, then the PDT will display: 'CANNOT SET NO
READING'.
If the flow fluctuates 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 setting is aborted.
flow warning menu, provided that the pump
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flow (with a minimum low warning
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