MKS HPS 945 Series, Operation And Maintenance Manual

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13
Digital Pirani vacuum Sensor System
Fuse Replacement
The Series 945 Pirani System has a combined fuse holder and power
outlet located on the rear panel of the Controller. Replace the fuse with the
following steps.
1. Unplug the power cord from its outlet.
2. Snap out the fuse holder drawer.
3. Replace the fuse(s) with one of the following time-lag fuses:
T 0.16 A (Ø 5 mm x 20 mm) – 90 to 130 VAC
T 0.063 A (Ø 5 mm x 20 mm) – 210 to 250 VAC.
4. Close and secure the fuse holder drawer.
Accessory Connector
Relay set point contacts and the analog output voltage can be accessed from
the
Accessory port on the rear panel of the Controller. A connector kit to mate
to the port is provided. The figure and chart on the next page identify the pin
functions of the
Accessory port.
Do not inadvertently short circuit the set point relay terminals to
the analog output voltage.