What to do if the MKS Mass-Flo 1500 Controller does not track the set point?
If your MKS Controller isn't tracking the set point, it might be due to an improper zero adjustment. To resolve this, zero the meter output as described in the Warm Up and Start Up guide on page 19.
What to do if the MKS Mass-Flo 1500 Controller does not function?
If the MKS Controller isn't functioning, it may be due to malfunctioning electronics. You can try to readjust the valve and disconnect the valve override. If this doesn't solve the issue, return it for service.
What to do if the MKS Controller indicates approximately twice the known flow and is unstable?
If your MKS Controller unit indicates approximately twice the known flow and is unstable, reinstall the unit in the proper flow direction.
How to stop oscillation in MKS Mass-Flo 1500 Controller?
If your MKS Controller exhibits oscillation, reduce the upstream pressure, check the manufacturer's specifications, and reduce the flow by turning counter-clockwise. You can also install a 150 to 1000 ohm resistor in series with the set point input line.
Why MKS Controller unit exhibits large zero temp. coefficient?
If the MKS Controller unit exhibits a large zero temp. coefficient because the ambient heater is out of regulation, check the placement of the flow meter in the hot system and return for service.
What to do if MKS Mass-Flo 1500 has no output, or over-range at zero (after warm-up)?
If your MKS Controller has no output, or over-range at zero after warm-up, the electronics may be malfunctioning. Check the cable type and return the device for service.
What to do if MKS Mass-Flo 1500 Controller is over-range at zero (after warm-up)?
If the MKS Controller is over-range at zero after warm-up, it may be caused by malfunctioning electronics. Isolate the flow instrument and return it for service.
Why MKS Mass-Flo 1500 unit is non-linear or has erratic operation?
If your MKS Controller unit is non-linear or has erratic operation, it could be due to the heater winding being out of regulation. Return the unit for service.
What to do if MKS Mass-Flo 1500 Controller unit produces large pressure drop or will not pass full flow?
If the MKS Controller unit produces a large pressure drop or will not pass full flow, return it for service.
General| Brand | MKS |
|---|---|
| Model | Mass-Flo 1500 Series |
| Category | Controller |
| Language | English |
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