Component Identification
8 311238ZAM
De-icing Control (F)
Open with knob or flat blade screwdriver to reduce icing.
If needed, adjust enough warm feed air bleed to elimi-
nate icing.
Integrated Air Control Module
Accessory
Bleed-type Master Air Valve (B)
• Required in your system to relieve air trapped
between it and the air motor when the valve is
closed.
• Be sure the valve is easily accessible from the
pump and located downstream from the air regula-
tor.
Air Regulator (C)
Adjusts air pressure to the motor and fluid outlet pres-
sure of pump. Locate it close to the pump. Install a
gauge (D) to read air pressure.
Safety Relief Valve (M)
Automatically opens to relieve air pressure, to prevent
pump overpressurization.
Air Filter (E)
Removes harmful dirt from compressed air supply.
Low noise models have exhaust baffles that can
accumulate ice easily.
Accessory Air Control Kits include air line compo-
nents in an integrated assembly. Order the kits
separately. See manual 311239 for installation
instructions.
• NXT011 with locking air regulator and 110 psi
(0.76 MPa, 7.6 bar) relief valve
• NXT031 with locking air regulator and 75 psi
(0.51 MPa, 5.1 bar) relief valve
• NXT021 with non-locking air regulator and 110
psi (0.76 MPa, 7.6 bar) relief valve.
Trapped air can cause the pump to cycle unexpect-
edly, which could result in serious injury from splashing
or moving parts.
Graco recommends using an air filter with a mini-
mum measurement of 40 micron.
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