Graco 24T918 Instruction Manual page 64

Repair
Replace Heater Over-Temperature Switch
251
255
ti21052a
F . 43
IG
Disassembly (see F . 43):
IG
1. Close the bleed-type ball valve installed at the
system air inlet to relieve all air pressure in the
system.
2. Turn main power switch OFF.
3. Disconnect cable from ADM then remove shroud.
4. Remove air tube (36) from relief valve. Pull the air
tube through the metal shroud (27). See F
page 65.
5. Use 7/16 in. socket to remove nuts (3) then remove
metal shroud (27).
6. Disconnect the wire connectors from the over-tem-
perature switch (251).
7. Remove the screws (255) securing the over-tem-
perature switch (251) to the melter assembly (5),
then remove the switch.
Re-assembly (see F . 43):
IG
1. Use the two screws (255) to secure the new
over-temperature switch (251) to the melter.
2. Connect wire connectors to new over-temperature
switch.
3. Use 7/16 in. socket to install nuts (3) to secure
metal shroud (27).
4. Route relief valve air tube (36) through the metal
shroud then attach to the relief valve.
64
5. Feed ADM cable through shroud then install shroud
and connect cable to ADM.
6. Open system air inlet ball valve.
7. Turn main power switch ON.
Replace Heater Rod
210
206
. 45,
IG
F . 44
IG
Disassembly (see F
NOTE: This procedure is for replacing any of the above
heater rods.
1. Turn main power switch OFF.
2. If replacing the melter heater rod (209), Remove
Melter Assembly. See page 60.
3. Disconnect cable from ADM then remove
shroud (29).
209
206
. 44):
IG
206
210
209
333347F