Shutdown; Pressure Relief Procedure - Graco ProControl 1KS Operation

System Operation

Shutdown

Overnight Shutdown
1. Leave the power on.
2. Run Recipe 0 to purge solvent through meters and
gun.
Service Shutdown
1. Follow Pressure Relief Procedure on page 94.
2. Close main air shutoff valve on air supply line and
on ProControl 1KS.
3. Shut off ProControl 1KS power (0 position). F
105.
4. If servicing EasyKey, also shut off power at main cir-
cuit breaker.
F . 105. Power Switch
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94

Pressure Relief Procedure

NOTE: The following procedures relieve all fluid and air
pressure in the ProControl 1KS system. Use the proce-
dure appropriate for your system configuration.
Relieve pressure when you stop spraying, before
changing spray tips, and before cleaning, checking, or
servicing equipment.
Single Color Systems
.
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1. While in Mix mode (gun triggered), shut off the A
and B fluid supply pumps/pressure pots. Close all
fluid shutoff valves at the pump outlets.
2. With the gun triggered, push the manual override on
the A and B dose valve solenoids to relieve pres-
sure. See F
NOTE: If a Dose Time alarm (E-7, E-8) occurs, clear
the alarm.
0 = OFF
3. Do a complete system purge, following the instruc-
tions under Purging Using Recipe 0, page 99.
4. Shut off the fluid supply to the solvent purge valve
(SPV) and the air supply to the air purge valve
(APV), F
TI12657a
5. With the gun triggered, push the manual override on
the A and B purge valve solenoids to relieve air and
solvent pressure. See F
pressure is reduced to 0.
NOTE: If a Purge Volume alarm (E-11) occurs, clear
the alarm.
. 106.
IG
. 108.
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. 106. Verify that solvent
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3A1080H