M

PUMP HEAD REMOVAL/INSTALLATION for “Quick Change” pump
Installing or removing a complete Pump Head, Male Adapter and Hose assembly.
Once the retrofit kit is installed on the pump, installation/removal of pump head is the same for both the retrofit and the
factory-built version:
• Stop pump and disconnect power supply.
• Pull Retractable Pin and remove current Pump Head Assembly from motor. The head can be removed with hose in
head, thus speeding changeovers.
• Align pump head with male adapter with female adapter on case. If necessary rotate Pump Head slightly until pump
head mates with adapter.
• Pull Retractable Pin and continue pressing Pump Head assembly into motor to close the gap between two mating
Adapters.
• Rotate and Lock Pump Head as desired.
• Remove pressure from Retractable Pin to allow spring pin to engage with Male Adapter. Rotate and pull on Pump
Head to ensure it is properly secured and will not pull off.
• Pump Head Assembly is now ready for operation
PUMP HEAD REPLACEMENT
For replacing a cracked or split plastic pump half, please see the instructions in the OMI #795-09456.
Changing Pump Direction
Specifics of switch operation for speed and direction control are in OMI #795-09456.
Fusing for the Quick Change Single Head Model
For 115 and 230VAC pump operation, use two (2) fuses, Part #780-91518 (5 x20mm, 5.0 Amp, 250VAC, Type FST, Slow Blow)
REPLACEMENT PARTS LIST
Description
Small Peristaltic
PQS Head
Large Peristaltic
PQL Head
Replacement Pump Head Only
401-35349-78
401-36347-78
Replacement Head Assembly w/Adapter
401-39597
401-39600
Replacement Head Assembly with M/F Adapter
C-39598
C-39601
Male Adapter (one/head)
539-39187-36
539-39187-36
Female Adapter (one/case)
539-39635-36
539-39604-36
O-Ring replacement kit (12 pieces)
C-37515
C-37514
Hose 3/8” ID x 5/8” OD (50 ft)
729-90598-50
Hose 5/8” ID x 7/8” OD (50 ft)
729-90597-50
Ball Bearings (two/head)
760-09251
760-09256
Coupling Set- ½” Bore
769-09254
Coupling Set- 5/8” Bore
769-09260
Swivel Lock Fastener (three/head)
402-34971
402-34971
Key, 1/8” sq. x 9/16” long.
758-08118-81 (two/head)
Key, 3/16” sq. x 7/8” long.
758-09258 (one/head)
758-09258 (three/head)
Double Barb Fitting- 3/8” x 3/8”
730-09310
Double Barb Fitting- 5/8” x 5/8”
730-09309
Retractable Pin
756-91475
756-91475
© 2006 Graymills Corporation Specifications May Change without Prior Notification
Graymills 3705 N Lincoln Avenue Chicago, IL 60613
773-248-6825 Fax [phone] www.graymills.com