MKS HPQ3, Hardware Manual

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MKS Instruments UK Ltd
HPQ3 Hardware Manual – SP101019.101 October 2012
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4. HPQ3 Installation
To aid installation, the HPQ3 can be mounted in any orientation, but the cooling vents on the side
panels and the exhaust vent on the rear panel must not be obstructed.
4.1 Installation
Rotate the locking ring on the stainless steel analyser connector so that the slot lines up with the
keyway on the connector tube. Hold the HPQ3 unit so that the keyway lines up with the locating
key on the analyser flange and gently slide the HPQ3 unit on to the analyser.
Take great care, the pins on the vacuum feedthrough are easily damaged.
DO NOT force the HPQ3 unit on to the analyser.
When all of the pins are engaged, push the HPQ3 firmly onto the analyser to ensure electrical
continuity. The last 3mm (1/8”) is important. When correctly fitted, the front face of the stainless
steel analyser connector should butt up against the analyser flange.
If you cannot fully mate the HPQ3 to the analyser, slightly loosen the three cross-head screws
placed around the mounting collar and try again. When a successful fit has been achieved, fully
tighten the three screws and re-check the fit.
Finally, use the 5mm hex key to secure the HPQ3 in place.
4.2 Electrical connections
Insert the 2-way D-Type socket on the output lead of the 24VDC power supply unit into the 2-way
D-Type connector
labeled “POWER” on the rear panel of the HPQ3.