
OPERATING
INSTRUCTIONS
Plastic Mustard Dispenser
Model No. 398-SL
The Prince Castle Plastic Mustard Dispenser has a
lightweight plastic shell which includes a cover with
tether attachment to reduce loss. The dispenser has
positive pump action which provides accurate portions everytime, plus all internal parts are colored
yellow, providing easy identification.
TABLE OF CONTENTS PAGE
Assembly ...................................................................... 2
Operating ....................................................................... 2
Cleaning ........................................................................ 2
Proper Maintenance ..................................................... 3
Parts List................................................................ 3 & 4
LIMITED WARRANTY
This product is warranted to be free from defects in
material and/or workmanship for a period of one
year from the date of original installation. Any
component which proves to be faulty during the
warranty period will be replaced without cost to the
customer.
SPECIFICATIONS
Height Diameter Shipping Wgt.
9-1/2 (24.1cm) 6-1/2 (16.5cm) 3 lbs. (1.4kg)
Printed in 1999
Prince Castle Inc.
355 East Kehoe Blvd. l Carol Stream, IL 60188
Tel: (630) 462-8800
Toll Free: 1-800-PCASTLE
l Fax: (630) 462-1460
398-508

INSTALLATION
1. After you have removed the dispenser from the
carton, inspect the unit for signs of damage. If there
is damage to the unit:
l Notify carrier within 24 hours after delivery.
l Save carton and packing materials for inspection
purposes.
l Contact your Prince Castle Dealer for replace-
ment or the the Prince Castle Customer Sales
Department at 1-800-722-7853 if purchased
directly.
2. Verify that all parts have been received.
3. Wash all parts before using.
4. Place dispenser in Prep Pan.
7. Insert assembly into shell. Make sure cylinder,
spring and piston are nested over diffuser.
IMPORTANT: Before filling dispenser, shake mustard container vigorously. Be sure lid on mustard
gallon is tightly sealed.
5. Fill the lower cavity of the empty container with
mustard (approximately 2 inches).
FILL WITH MUSTARD
APPROXIMATELY
2 INCHES
6. Assemble all internal parts of the spring assembly.
8. Make sure there is a tray or towel under dispenser.
(Do to consistency, mustard may drip.)
9. Fill dispenser.
10. Assemble the activating lever (item A) through the
lever stop. Guide the plunger rod (item B) into the
center hole. Push down against the springing
action of the piston, and guide the end of the lever
into the TEE slot of the container.
PISTON PUSH ROD
PISTON SPRING
CYLINDER
CHECK VALVE
CHECK VALVE SPRING
2

OPERATION
1. The dispenser must be primed after filling. Hold
lever down to force air out of cylinder. Shake
dispenser side to side or swirl (or both) to remove
air trapped around spring and cylinder area due to
thickness of mustard.
2. Pump dispenser a number of times to prime. If
dispenser is not working properly alternate pumping and shaking.
CALIBRATION
Set Brix cup under dispenser and dispense 47 shots of
mustard into cup. Allow the lever to return fully after
each shot. 47 shots will dispense 1 fl.oz. (30 ml) of
mustard into the Brix cup. If the amount of mustard
dispensed into the cup is above or below 1 fl.oz. (30
ml), move adjusting cam from hole #3 to hole #2 to
DECREASE volume, or move to hole #4 to INCREASE the amount of mustard dispensed. Repeat
this adjustment until dispenser is calibrated.
IMPORTANT: If dispenser is not primed air in the
piston, cylinder and diffuser area will cause improper
operation
3. Depressing the actuating lever one time will
deliver approximately 1/28 oz. of mustard.
CLEANING
1. Remove mustard from container.
2. Fill with warm water and press actuating lever
several times to pump water through dispenser.
3. Disassemble all parts and wash thoroughly.
TROUBLESHOOTING
1. Use mustard which is at room temperature.
2. Rotate rubber diffuser daily. Allow one diffuser to
dry out while using another one. This helps
diffuser maintain its shape for proper dispensing.
3. To check if diffuser is working properly, assemble
without any mustard. Turn the dispenser upsidedown, press down on the center of the diffuser.
There should not be any movement between the
diffuser and the center of the plastic cylinder.
4. If there is movement between the diffuser and the
plastic cylinder, or if diffuser is soft, it should be
replaced.
IMPORTANT: The lower numbered holes dispense less
mustard. The higher numbered holes dispense more
mustard. For all hole number settings, the arrow mark on
the side of the adjusting cam must always point towards
the handle of the dispenser.
PARTS LIST
ITEM PART DESCRIPTION
1 398-30 Container w/Handle
2 404-7 Check Valve Spring
3 398-8 Check Valve
4 398-9 Cylinder
4a 398-13 Cylinder, Valve, and
Spring Assembly
5 398-20 Piston Spring
6 398-6 Piston Push Rod
7 398-4 Adjusting Cam
8 398-3 Lever
8a 398-14 Lever and Cam Assembly
9 404-13S Tether (pkg. of 6)
10 404-2S Lid w/Tether (pkg. of 3)
* Not Shown
3