MKS 937B - Page 9

MKS 937B Operation Manual
9
Use proper electrical fittings.
Dangerous voltages are contained within this instrument. All electrical fittings and cables must be of
the type specified, and in good condition. All electrical fittings must be properly connected and
grounded.
The Series 937B Controller contains lethal voltages when on.
High voltage is present in the cable and a cold cathode sensor when the Controller is turned on.
Use the proper power source.
This product is intended to operate from a power source that applies a voltage between the supply
conductors, or between either of the supply conductors and ground, not more than that specified in
the manual.
Use the proper fuse.
Only use a fuse of the type, voltage rating, and current rating specified for your product.
Do not operate in explosive environment.
To avoid explosion, do not operate this product in an explosive environment unless it has been
specially certified for such operation.
Service by qualified personnel only.
Operating personnel must not remove instrument covers. Component replacement and internal
adjustments must only be made by qualified service personnel.
Use proper power cord.
Only use a power cord that is in good condition and that meets the input power requirements
specified in the manual.
Only use a detachable cord set with conductors having a cross-sectional area equal to or greater than
0.75 mm
2
. The power cable should be approved by a qualified agency such as VDE, Semko, or SEV.