Moyno Grinders Service Manual - Moyno - #1

MOYNO® 500 PUMPS Page: 1 of 6 Date: March 1, 1998

Housing: Cast iron

Pump Rotor: Chrome plated AISI 416

stainless steel Pump Stator:NBR (Nitrile) Shaft: AlSl 416 stainless steel

Bearings: Prelubricated, fully sealed

ball bearings Seal: Mechanical

(carbon/ceramic) Cutter Ring: Hardened steel Cutter Disc: Cast iron Cutter Tips: Carbide

Pump rotation must be clockwise when facing shaft to prevent rotor unscrewing from shaft. Check direction of rotation before startup.

Maximum speed is 1750 rpm and is the recommended speed for most effective grinding.

Self-Priming. Pump is not self-priming. Pumping elements should be located at or below water line. Be sure suction lines are airtight.

DO NOT RUN DRY. Unit depends on liquid pumped for lubrication. For proper lubrication, flow rate should be at least 10% of rated capacity.

Pressure and Temperature Limits. Maximum discharge pressure is 80 feet of water or 35 psig. Unit is suitable for service at 10° to 160°F.

Storage. Always drain pump for extended storage periods.

Mounting Position. Pump may be mounted in any position. When mounting vertically, it is necessary to keep bearings above seals to prevent possible seal leakage into bearings.

Pump is not self priming. Be sure pumping elements are located at or below water line.

Piping. Piping to pump should be self-supporting to avoid excessive strain on pump housings; 4" NPT male connection on suction port, 1-1/4" NPT female connection on discharge port. Be sure suction lines are airtight. A non-clogging type check valve should be used in discharge piping to prevent flow back through pump. Use pipe "dope" or tape to facilitate disassembly and to provide seal.

Drive. Any 56 frame, C-face, 1 HP, 1750 rpm, motor may be selected to meet code or application requirements. Motor is bolted directly to pump flange using hardware supplied with pump.