Pulsafeeder Pulsar DLCM - Manual (Page 9)

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2. Safety Considerations
The DLCM is a sophisticated microprocessor based controller for use only with PULSAR diaphragm
metering pumps. It yields tremendous control capacity – electrical, mechanical and (in conjunction with
the PULSAR pump) hydraulic in nature. In consideration of SAFETY, you should be mindful of this
relative to your safety, that of co-workers and of the process environment. Consider the following prior to
the installation and operation of a DLCM controlled PULSAR metering pump.
2.1 General Safety
The DLCM was designed as a motor speed controller and stroke length position actuator for operation
solely with the PULSAR metering pump. Use for any other application is considered un-safe and voids
all certification markings and warranties.
2.1.1 Explosive Atmosphere Safety
Explosion Hazard -- Do not perform installation or maintenance of any kind on this device while
circuit is live and/or the area is known to be hazardous.
With the proper marking, this equipment is suitable for use in Class I, Division 2, Groups C & D; Zone
2, Groups IIA and IIB or non-hazardous locations only.
2.1.2 Electrical Safety
The DLCM can be considered an industrial stroke length controller with an integrated motor speed
controller. Improper application and use can be hazardous. You are solely responsible for its use.
The DLCM's electrical installation must conform to all relevant electrical codes. Installation and
electrical maintenance must be performed by a qualified electrician. Before installing or servicing this
device, all power must be disconnected from the source at the main distribution panel.
The DLCM emits electro-magnetic energy and generates radio frequency interference. Its use is
restricted to industrial applications. You are responsible for shielding this energy/interference.
2.1.3 Mechanical Safety
When properly installed, the device has only one externally accessible moving part – the hand
adjustment knob. This component is under computer control and as such may actuate without warning.
Care should be taken to keep loose clothing away from this component. Hands and fingers should be
kept clear while the knob is turning under DLCM control.
The DLCM was designed to be service free. It contains no user-maintainable components. Removal of
the entire DLCM as an assembly from the pump is permissible. Do not disassemble the DLCM
enclosure unless instructed to do so in Section 12 of this manual. Evidence of disassembly shall void
the warranty.
2.1.4 Hydraulic Safety
Thoroughly review and adhere to the contents of the PULSAR Installation, Operation, Maintenance
and Instruction manual (Bulletin No. PMP-IOM-96) for hydraulic installation of your PULSAR
metering pump. As a microprocessor controlled device, the DLCM may activate the pump motor
without warning – generating hydraulic pressure and fluid flow. Care should be taken to protect both
users and systems should the pump activate.