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Replacing diaphragms and valves – VACUUBRAND BVC professional G User Manual

Page 52

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page 52 of 68

Never operate the pump if covers or other parts of the

pump are disassembled.

Before starting maintenance,

disconnect the electri-

cal power cord. Wait 5 seconds after isolating the

equipment from AC power to allow the capacitors to

discharge.

Ensure that the pump cannot be operated accidentally.

Note: The pump might be contaminated with the pro-

cess chemicals that have been pumped during opera-

tion. Ensure that the pump is decontaminated before

maintenance.

Avoid the release of pollutants.

+

Never operate a defective or damaged pump.

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Take adequate precautions to protect people from the

effects of dangerous substances that may have con-

taminated the pump and may be released upon dis-

assembly. Ensure that the maintenance technician is

familiar with the safety procedures which relate to the

products processed by the pumping system.

Use appropriate protective clothing, safety goggles and

protective gloves.

+

Check every motor capacitor regularly by measuring its

capacity and estimating its service life. Replace old ca-

pacitors early enough to prevent a failure. The capaci-

tors must be replaced by a trained electrician.

+

Allow sufficient cooling of the pump before starting

maintenance.

+

Vent the pump and isolate it from the vacuum sys-

tem before you start maintenance.

Replacing diaphragms and valves

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