Graymills Dual Head Peristaltic OMI - Manual (Page 3)

SERVICING PUMP
PUMP HEAD ADAPTER REPLACEMENT
To attach new adapter to pump head in case of damage to adapter
For Dual Head Peristaltics, the following:

Stop pump and disconnect power supply.

Press Release Lever and remove Pump Head Assembly from motor.

Unscrew and pivot three Quick Release screws and remove outside half of Pump Head.

Unscrew four (4) cap screws to remove old Male Adapter from inside Pump Head.

Attach new Male Adapter onto the shaft side of new Pump Head Assembly with four(4) cap screws.

Place one large key into the short keyway of the Shaft.

Align this key with keyway of hollow shaft in motor and press Pump Head assembly into motor. If
necessary rotate Rotor Assembly slightly until key and keyway align.

Press Release Lever and continue pressing Pump Head assembly into motor to close the gap between
two mating Adapters.

Remove pressure from Release Lever 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.

Ensure o-ring is on the shaft.

Install new hose and secure with outside Pump Head and three Quick Release Screws.

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.
REPLACEMENT PARTS LIST
Description Small Peristaltic
PPS-DV-DH Large Peristaltic
PPL-DV-DH
Replacement Pump Head Only 401-35349-78 401-36347-78
Replacement Head Assembly PPS-DH PPL-DH
Replacement Head Assembly with Adapter PPS-DHA PPL-DHA
Motor 397-91472 397-91472
Male Adapter (one/head) 539-39187-31 539-39187-31
Female Adapter (two/motor) 539-39191-31 539-39191-31
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
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
Fuse 5.0 Amp(two/Remote Control) 780-91518 780-91518
Boot Rubber for Toggle Switch 770-08481 770-08481
Lever-Hand Release 623-39192-35 623-39192-35
Retractable Pin 756-91475 756-91475
© 2013 Graymills Corporation Specifications May Change without Prior Notification
Graymills
3705 N Lincoln Avenue Chicago, IL 60613
773-248-6825 Fax 773-477-8673 www.graymills.com