Heater Repairs - Graco InvisiPac HM10 Instructions Manual

Repair
Install the Fluid Pressure Relief Valve
1. Install the pressure relief valve (630). Torque to
24-30 ft-lb.
2. Clean drained fluid from the side of the melter.
3. Roll the melter jacket (632) back around the melter
and secure with fasteners (633).
4. Reconnect the air tube to the pressure relief valve
(630).
5. Rotate the melter back into place on the mounting
studs. Secure the melter bracket plate (635) with
fasteners (215).
6. Install the equipment covers. See F
page 82.
98

Heater Repairs

DANGER
SEVERE ELECTRIC SHOCK HAZARD
This equipment can be powered by more than 240V.
Contact with this voltage will cause death or serious
injury.
•
. 68 on page
IG
This equipment stays pressurized until pressure is
manually relieved. To help prevent serious injury from
pressurized fluid, such as skin injection, splashing
fluid and moving parts, follow the Pressure Relief
Procedure, page 26 before servicing the equipment.
The equipment surfaces and components can
become very hot. To avoid severe burns, wear
protective gloves and clothing that will insulate your
hands and body from the hot surfaces and adhesive
material.
Moving parts can pinch, cut, or amputate body parts.
To help prevent serious injury from moving parts, do
not operate equipment with the protective covers
removed.
Check Melter and Pump Heater Resistance
1. Access the Electrical Enclosure. Follow the steps
2. Remove the heater wires from the AMZ.
3. Verify that the resistance of each heater is between
NOTE: If the heater connector is plugged in, the heaters
should have a parallel resistance value of 26–32 ohms.
Turn off and disconnect all power before
disconnecting any cables and before accessing
the electrical enclosure or servicing electrical
components.
on page 83.
52–64 ohms.
3A7259C