Follow our step-by-step instructions and video walkthroughs to assemble, tune, and calibrate your Riley Hopkins 250+ manual screen printing press.
REQUIRED TOOLS BEFORE YOU BEGIN
- Two 9/16 inch combination wrenches
- One 1/2 inch combination wrench
- Standard shop hammer
- One 1/8 inch hex wrench (included with press)
SINGLE STATION ASSEMBLY PRTB-RH250-4X1
Step 1. Attach Mounting Feet
Position the mounting feet under the main press base assembly. Secure tightly using the supplied 5/16 inch hex cap screws, flat washers, and lock washers with a 1/2 inch combination wrench.
Step 2. Install Printhead Assemblies
Mount each printhead into the hinge point of the color rotary wheel. Slide the pivot bolt through with flat washers and tighten with the nyloc nut using two 9/16 inch combination wrenches. Tighten until snug while allowing smooth pivot travel.
Step 3. Attach Spring Assemblies (Caution Extreme Force)
Hook the mesh-covered springs into the lower brackets with the hooks facing upward. Stretch and secure the top hooks into the printhead tabs with caution. Carefully lower the printheads until they rest on the lower stop bolts.
Step 4. Mount Upper Stop Bolts and Sleeves
Slide the blue protective rubber hose sleeves over the upper stop bolts. Thread the bolts into the upper printhead tabs with washers and low-profile nyloc nuts using two 9/16 inch combination wrenches. Avoid overtightening to prevent hinge friction.
Step 5. Mount and Lock Down Platen
Slide the 16x16 inch neck platen bracket onto the print station arm. Position to your printing preference. Lock firmly into place by tightening the side knob first, then tightening the two bottom knobs.
MULTI STATION ASSEMBLY 4X2 4X4 6X2 6X4
Step 1. Assemble Core and Printheads
Bolt the printhead assemblies to the color wheel hinge points using two 9/16 inch combination wrenches. Hook the mesh-covered springs with hooks facing upward, lower the heads, and install the upper stop bolts with blue rubber sleeves.
Step 2. Match Station Numbers
Mount each print station arm to the center rotary hub using the 3/8-16 x 1 inch bolts and washers. Ensure the stamped number on the arm matches the number on the center rotary face. Leave hardware hand snug so the arm can be adjusted.
Step 3. Seat Locating Roll Pins
Visually align the pin holes on the station arm and rotary hub. Tap the two 3/16 inch roll pins in approximately 1/2 inch using a hammer to lock in factory alignment. After pins are seated, fully tighten the station arm bolts using two 9/16 inch wrenches.
Step 4. Mount Platens and Adjust Gates
Slide platens onto each station arm and secure the side knob first, followed by the lower knobs. Check the bearing gate assembly. If gate adjustment is needed, loosen the 5/16 inch nuts with a 1/2 inch wrench, adjust the 1/8 inch set screw clockwise to tighten, and re-lock.
Step 5. Calibrate Level and Zero Micros
Clamp a screen frame into the clamp assembly and lower it over the platen. Loosen the front 5/16 inch hardware with a 1/2 inch wrench to level the head flat across the platen. Use the top pointers to return XYZ micros to center zero before running jobs.
START PRINTING RIGHT AWAY
Now that your Riley Hopkins 250+ press is built, read our official quickstart guide to learn screen setup, off-contact leveling, and print registration.
EQUIP YOUR SHOP FOR PRODUCTION