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4 108 835A Safety Danger of Burns Contact with hot melt materials or hot areas of the unit may produce a severe skin burn. W ARNING : Hot! Risk of burns. Wear heat-protective clothing, safety goggles, and/or heat-protect…

108 835A

Safety

S Failure to observe workplace safety rules or

regulations issued by government authorities or

safety councils

Installation and Electrical Connections

WARNING: Failure to follow the safety

procedures can result in injury or death.

S All electrical, pneumatic, gas, and hydraulic

connections and installations of hot melt equipment

may only be carried out by qualified personnel. Be

sure to observe installation instructions for

components and accessories.

S Equipment must be properly grounded and fused

according to its rated current consumption (see ID

plate).

S Cables which run outside the unit must regularly be

checked for wear or damage.

S Power supply wire gauge and insulation must be

sufficient to handle rated current consumption.

S Cables must never be squeezed or pinched. Do not

locate cables or hoses in high traffic areas.

Operation

The unit should be operated by qualified personnel in

accordance with the instructions presented in this

document.

WARNING: Failure to follow the safety

procedures can result in injury or death.

S Never allow the unit to be operated by personnel

under the influence of substances which reduce

their reaction times, or who are not able to operate

the equipment for physical reasons.

S Prior to each startup of the unit, check protection

and warning devices and make sure they are fully

functional. Do not operate the unit if these devices

are not functioning properly.

S When the removal of safety equipment is required

for installation, maintenance, or repair of the unit, it

must be re-connected immediately upon completion

of the work.

S Prior to startup of the unit, check to make sure all

safety guards and safety equipment are in place

and functioning properly.

S In a humid environment, only equipment featuring a

corresponding class of protection may be operated.

S Do not operate the unit in an explosive

environment.

S Keep parts of the body or clothing away from

rotating parts. Do not wear loose articles of clothing

when operating or servicing units with rotating

parts. Take off wrist watches, rings, necklaces, or

similar pieces of jewelry and pin up or cover long

hair before performing any work on or with the unit.

S To carry out measurements on work pieces, switch

off the unit and wait until it comes to a standstill.

S Never point hand guns or applicator nozzles at

yourself or other persons.

Less-obvious Dangers

WARNING: An operator or service technician

working with the unit should be aware of

less-obvious dangers that often cannot be

completely minimized at production sites:

S Exposed surfaces of the unit which cannot be

practically safeguarded. They may be hot and take

time to cool after the unit has been operating.

S The possibility that electrical potentials may remain

in the unit after the unit was de-energized

S Hot melt material and vapors

S Hydraulically or pneumatically operated parts of the

unit

S Parts winding something up or down which are not

covered

Action in the Event of Unit Malfunction

If the unit malfunctions, switch it off immediately.

S Turn the circuit breaker or main power switch OFF.

S Have the unit repaired by qualified personnel only.

108 835A

Safety

Danger of Burns

Contact with hot melt materials or hot areas of the unit

may produce a severe skin burn.

WARNING: Hot! Risk of burns. Wear

heat-protective clothing, safety goggles, and/or

heat-protective gloves.

S Be extremely careful when using hot melt material.

Even solidified material may still be very hot.

S Always wear protective clothing which safely covers

all exposed parts of the body.

In case of burns:

S Immediately cool affected skin areas using cold,

clean water.

S Do not forcefully remove hot melt material from the

skin.

S Immediately seek medical attention.

Maintenance/Repair

Allow only qualified personnel to perform the

procedures described in this document. When

performing such tasks, wear protective clothing and

equipment.

WARNING: Even when the circuit breaker or

main power switch is OFF, the unit is still

electrically energized. Complete the following

steps prior to maintenance or repair:

S Disconnect, lock out, and tag external power

supply.

S To ensure the external power supply is

disconnected, attempt to operate the unit. If the unit

does not energize, proceed with maintenance or

repair work.

S If the unit energizes, repeat the disconnect, lock

out, and tag procedure. Re-test the unit.

S Follow the specific instructions provided in this

manual to release the system pressure in the entire

unit.

S Secure pneumatically- or hydraulically-operated

equipment against uncontrolled movement.

S Only use parts which do not compromise the safety

of the unit. Only use genuine Nordson parts.

S Always use tools with insulated handles when

removing or installing components.

Cleaning

NOTE: Always refer to the material manufacturer’s

Material Safety Data Sheet (MSDS) or material

information sheet before working with any hot melt

material.

WARNING: Never clean any aluminum part or

flush any system using halogenated hydrocarbon

fluids. Examples of common halogenated

hydrocarbons are: dichloromethylene,

1,1,1-trichloroethylene, and perchloroethylene.

Halogenated hydrocarbons may react violently

with aluminum parts.

WARNING: Fire, open flame, and smoking are

prohibited when cleaning fluids are used.

Observe all explosion prevention regulations.

Cleaning fluids may only be heated using

temperature-controlled and explosion-protected

heaters.

S Never use an open flame to clean the unit or

components of the unit.

S Use only cleaning fluids designed or intended to be

used with the hot melt material being used in the

unit. Never use paint fluids under any

circumstances.

S Note the flash point of the cleaning fluid used. Only

use a controlled heating method to heat fluids.

S Ensure sufficient room ventilation to draw off

generated vapors. Avoid prolonged breathing of

vapors.

108 835A

Safety

Thermoplastic Hot Melt Material

NOTE: Always refer to the material manufacturer’s

Material Safety Data Sheet (MSDS) or material

information sheet before working with any hot melt

material.

S Ensure the work area is adequately ventilated.

S Do not exceed recommended processing

temperatures. Doing so creates a danger to

personnel due to decomposition of the material.

Equipment and Material Disposal

Dispose of equipment and materials used in operation

and cleaning according to local regulations.

Polyurethane Reactive (“PUR”) Hot Melt Material

NOTE: Always refer to the material manufacturer’s

Material Safety Data Sheet (MSDS) or material

information sheet before working with any hot melt

material.

WARNING: Exercise extreme caution and

always provide adequate ventilation when using

reactive materials.

WARNING: Only use PUR material in units that

are designed to process such material. Using

PUR material in units that cannot process them

can cause damage to the unit and premature

reaction of the hot melt material.

WARNING: PUR material contains isocyanate

ingredients which will irritate skin, mucous

membranes of eyes and respiratory passages.

WARNING: Persons with existing asthmatic

conditions may experience difficulty in breathing.

Because isocyanate ingredients are found in various

concentrations in reactive materials produced by

different manufacturers, it is imperative that the material

manufacturer’s MSDS or material information sheet be

consulted BEFORE using reactive material. Pay

particular attention to the discussion of material toxicity,

health effects, and reactivity condition.

There are certain universal safety guidelines that should

be followed when using any reactive material:

S Recommended processing temperatures must not

be exceeded.

S When handling and using reactive material, always

wear thermally protective gloves and long-sleeved

clothing.

S Wear chemical goggles to reduce the potential of

eye contact.

S Have eye washes available and provide a cold

water source for burn treatment.

S The regular use of barrier cream for hands and face

is recommended for skin protection.

S Do not eat, drink, smoke, or store food in working

areas where PUR material is being processed.

S Wash hands thoroughly after working with reactive

material.

S Remove hot melt material vapors using suitable

extraction ventilation equipment.

S Use appropriate respiratory equipment where there

is the danger of inhaling isocyanate vapors or other

ingredients contained in the PUR material in

concentrations exceeding permissible limit values.

S In case of very high concentrations of harmful

substances, or if you are unsure of the

environmental conditions, respiratory protective

equipment (operating independent of the

surrounding air) must be used.

S Do not operate the unit with PUR materials if you

are unsure that ALL adequate safety measures

have been taken.