Replace The Encoder; Required Tools - Graco Core E1 Operation, Repair, And Parts

Replace the Encoder

Required Tools

• 2.5 mm Allen wrench
• 3/16 in. Allen wrench
• Torque wrench capable of 30 in-lb (3.4 N•m)
• Medium strength thread locking compound
De-energize the System
1. Turn the TPC switch (ZP) to OFF and unplug the
power cord.
ZP
2. Wait five minutes for power to dissipate prior to
servicing.
Encoder Disassembly
1. Use a 2.5 mm Allen wrench to remove the four
screws (215) from the top of the motor (201).
2. Remove the plastic cover (214) and metal cable
support plate (209).
3. Disconnect 8-pin encoder connector from the 8-pin
connector on the motor cable.
4. Use a 2.5 mm Allen wrench to remove two encoder
mounting fasteners.
5. Use a 3/16 in. Allen wrench to remove the encoder
(216) from the motor shaft.
NOTE: The fastener may rotate several times as the
motor ball screw moves towards the end of its
travel prior to the fastener loosening.
Do not use the ball end of an Allen wrench to
remove the encoder. Damage could occur.
3A8503C
TPC
ti40939a
NOTICE
Encoder Reassembly
1. Add a drop of medium strength thread locking
compound to the threads of the encoder (216) stem.
2. Use a 3/16 in. Allen wrench to install the encoder
(216) into the motor shaft and torque to 20-25 in-lb
(2.3-2.8 N•m).
NOTE: The fastener may rotate several times as the
motor ball screw moves towards the end of its
travel prior to the fastener tightening.
3. Use a 2.5 mm Allen wrench to install two encoder
mounting screws. Torque to 10-15 in-lb (1.1-1.7 N•m).
NOTE: The encoder (216) does not require specific
mounting orientation.
4. Connect the 8-pin encoder connector to the 8-pin
connector on the motor cable.
5. Install the metal cable support plate (209) and
plastic cover (214).
6. Use a 2.5 mm Allen wrench to install the four
screws (215) into the top of the motor (201) and
torque them to 20-25 in-lb (2.3-2.8 N•m).
215
214
209
201
Repair
216
ti40974a
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