AD-31 Handguns Manual.pdf - 第5页

5 108 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…

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.

108 835A

Description

4203001

Figure 1 Typical AD-31 Handgun

1. Gun Body

2. Nozzle

3. Pivot Sleeve

4. Trigger

5. Handle

6. Trigger Lock

7. Gun Slot (for hanging

gun)

Nordson Series AD-31 Handguns may be used only for

manually dispensing hot melt adhesives, sealants, and

other thermoplastic materials.

The Series AD-31 Handguns include several models for

a variety of dispensing patterns, including solid or

foamed extrusion beads, atomized spray patterns, and

swirl spray patterns. For handling high viscosity or filled

materials, the AD-31 LBS extrusion handgun

incorporates a large ball-and-seat and larger flow paths.

Depending on the applicator design, handguns employ

either a preset thermostatic temperature sensor or an

RTD (resistance temperature detector) sensor. RTD

sensing provides temperature control precision by

reducing temperature fluctuations that could negatively

affect flow and cause char formation. A wide operating

temperature range of 65_ to 230 _C (150_ to 450 _F)

provides additional application versatility.

A typical AD-31 extrusion handgun is shown in Figure 1.

The gun consists of the following components:

S Gun Body

S Handle

S Pivot Sleeve

S Trigger Lock

S Trigger

S Nozzle

S Gun Slot (for hanging gun)