AST PCH GMP-025 Series User Manual

SHUT-DOWN PROCEDURES
The following is the recommended procedure for removing,
inspecting, cleaning and reinstalling GMP pumps. Please use
all safety devices such as but not limited to gloves and eye
protection. When working with solvents do so in a well-
ventilated area free of combustible items. Take every effort not
to mar or damage any surfaces that come in contact with
materials.
 Disassembly
o Remove tank & inlet [assuming all material has been
removed from tanks].
 Open bleed valve on top of inlet block, if supplied.
 Remove tank straps, if supplied.
 Remove (3) of the 4 bolts attaching inlet to back of
pump
 Loosen fourth bolt to allow inlet to come off pump and
drain any remaining material. Remove bolt and tank
after enough material is drained.
 Discard o-ring between inlet & pump (12498).
 Clear any foreign objects, crystallized or partially
hardened material from tank & inlet block.
 Cleaning of residues from pump
o Partially disassemble & clean pump
 Remove four bolts attaching inlet to back of pump.
Back of pump should pull off shaft & front section.
Excessive force should be used only with extreme
caution to prevent damage to the pump (Be careful to
not lose the two alignment pins, which prevent incorrect
assembly of pump. Clean pins if necessary).
 Clean bolts of any material.
 Prevent any damage to all interior surfaces of pump
.
 Carefully remove outer stator ring housing. Assuming
that any crystallized material is located between stator
(internal teeth) and rotor (external teeth), soak area in
contact with material in a compatible solvent to soften.
 Gently remove & clean stator. Rotor should be carefully
cleaned at this time while still mounted on pump shaft.
Use nylon brushes instead of steel if possible to
preserve surface finished.
 Keep all
parts, except for o-rings.
 All residues of old material are to be removed from all
internal surfaces of the pump parts.
 Test to see if pump shaft can be turned.
 Check to see if motor will turn by turning on the
machine briefly.

Remove chain and turn sprocket. Use a wrench, if
necessary.

If pump shaft will turn, further disassembly is
unnecessary unless material is leaking from shaft
seals (check behind drive sprocket).
 Once completely clean, re-assemble pumps. *Note:
Mechanical side of pumps cannot be assembled
incorrectly if the two (2) guide pins are in place. Use
new o-rings. The use of petrolatum grease is
#60065-02: Page #10
PUMP CLEANING PROCEDURE
recommended to lubricate all internal surfaces
immediately before installation and may make re-
assembly easier along with future servicing of pump.
 Lubricate pumps using zerks supplied. Use only
petrolatum grease for this purpose.
 Load Material into machine per operator’s manual.
 Test machine per operator’s manual.
o Check cured material for uniform cure and consistency.
o See “Troubleshooting” section in operator’s manual if any
problems are observed.
 Restock any items used in procedure.
The following is the recommended procedure for storing
equipment for a shot period of time. Please note that some
items included in this procedure are not included with all
supplied equipment. Please use all safety devices such as but
not limited to gloves and eye protection. When working with
solvents do so in a well-ventilated area free of combustible
items. Take every effort not to mar or damage any surfaces
that come in contact with materials.
 Pump Unit Dry
o Pump remaining material.
 Remove static mixer and/or spray attachment.
 Operate machine until no material is being dispensed.
Check that hoses are allowed to drain completely
(hoses should lead “downhill” towards dispense valve).
 Clean dispense valve & reapply layer of compatible
lubricant.
o Flush System
 Use only a cleaning solution most effective for removing
your material. Consult manufacturer for
recommendations. Carefully observe all health and
safety precautions listed on all labeling.
 Fill each tank a minimum of 1/3 with a compatible
cleaning solution.

Set pump speed control to slow setting.

Operate machine until cleaning solution begins to come
out of the machine.

Allow machine to sit for a period of time, depending on
the effectiveness of the cleaning solution, not more than
one hour. Most solvents will not damage any
component unless allowed to remain in system.

Continue pumping cleaning solution into container until
machine is again empty. Observe cleaner as it is being
pumped. As solution is pumped, it should appear to
become clean. If this is not observed, the same
cleaner, after impurities have settled, can be re-loaded
into machine and procedure repeated – if
it is pumped
out immediately
. Do not allow any settled material back
into s
y
stem.
SHORT-TERM SHUTDOWN PROCEDURE
(CONTINUED ON PAGE #11)

AST PCH GMP-025 Series Specifications

General

Brand	AST
Model	PCH GMP-025 Series
Category	Paint Sprayer
Language	English