User's Manual

Installation
312753E 7
Installation
Hydraulic & Chemical Hose
Installation
Before Disconnecting Hydraulic Fitting or
Proximity Switch
• Turn off the hydraulic pump
• Depressurize the hydraulic system
• Allow the fluid to cool
Before Disconnecting a Chemical Fitting or
Nozzle Grip Assembly
• Turn off the proportioner
• Bleed the chemical pressure to ZERO
• Allow the fluid to cool
Install Hydraulic Hose
The fittings are identified on the MixHead body and the
hoses are color-coded to aid in identification and proper
installation.
When connecting the hoses, do not allow any dirt or for-
eign matter to enter the lines.
After mounting the MixHead, install the hydraulic and
chemical hoses as follows:
1. Install the hydraulic hoses for the cleanout plunger
to the fittings on the MixHead as follows:
a. Install the “close” hose to the Cleanout Plunger
Close Fitting (Q).
b. Install the “open” hose to the Cleanout Plunger
Open Fitting (B).
2. Install the hydraulic hoses for the material plunger to
the hydraulic fittings on the MixHead as follows:
a. Install the “close” hose to the Material Plunger
Close Fitting (N).
b. Install the “open” hose to the Material Plunger
Open Fitting (P).
3. Purge all air from the hydraulic fluid lines using the
procedure in the Bleeding Air from Hydraulic
Fluid Lines section on page 8.
4. Manually cycle the cleanout plunger back and forth
to check for proper operation. Check for hydraulic
leaks and retighten fittings as required. Make sure
the proximity switch is securely tightened and mak-
ing contact, and then return the cleanout plunger to
the “retract” position.
When hoisting the MixHead from an overhead posi-
tion, always lift by the top eyebolt.
Handle the MixHead with care. The internal moving
parts are precisely machined for proper alignment.
Any disturbance of this alignment may result in Mix-
Head failure.
Do not come into contact with Isocyanate. See Iso-
cyanate Hazard on page 5.
NOTICE
The person performing the installation must under-
stand the operation of the MixHead hydraulic power
source and chemical flow system.
Before disconnecting a chemical fitting or nozzle grip
assembly, turn off the proportioner, bleed the chemi-
cal pressure to ZERO, and allow the fluid to cool.
See FIG. 1 on page 6.
Follow hydraulic fluid lines air purging procedure
carefully to avoid skin injection hazard.