Hydromatic Model HPGX200 Hazardous Location .
Apr 16, 2018· Pumps Not Operating or in Storage: Pumps with carbon ceramic seals must have impellers manually rotated (6 revolutions) after setting non-operational for 3 months or longer and prior to electrical start-up. Seal Failure Probes: All hazardous location submersible pumps have two factory-installed moisture detectors (seal failure probes).