FIGURE C - Determining the Pumping Range in cm SPECIFICATIONS tether length 8 15 23 30 38 46 56 pumping range 20 28 38 53 71 79 91 Cable Flexible 18 gauge, 2 conductor, water-resistant. (standard) Flexible 18 gauge, 3 conductor, water-resistant. (SPDT) Use only as a guide. Pumping ranges are based on testing in nonturbulent conditions. Range may vary due to water temperature and cable shape. Note: As the tether length increases, so does the variance of the pumping range. Float 7.0 cm diameter x 12.3 cm (2.74 x 4.83 inch), high impact, corrosion resistant, polypropylene housing for use in sewage and non-potable water. PULSAR Process Measurement user guide Operating Temperature Range Water up to 60 oC (140 oF). FIGURE D - Tether arrangement Maximum Water Depth 9 m (30 feet) or 90 kPa (13 psi) Max. Pump Running Current 10 A @ 125 V AC 50/60 Hz Single Phase 8 A @ 250 V AC 50/60 Hz Single Phase Max. Pump Starting Current 60 A @ 125 / 250 V AC 50/60 Hz Single Phase Note: This switch must be used with pumps that provide integral thermal overload protection. The switch is not recommended for controlling: ⇒ loads less than 100 mA 12 V AC ⇒ non-arcing electric loads This equipment is suitable for IEC 664 category II installations © This equipment is protected by double insulation PREVENTATIVE MAINTENANCE Periodically inspect the product. Check that the cable hasn’t become worn or that the housing hasn’t been damaged so as to impair the protection of the product. Replace the product immediately if any damage is found or suspected. P U L S A R Process Measurement Limited Cardinal Building Tel: +44 (0)1684 891371 Enigma Commercial Centre Fax: +44 (0)1684 575985 Sandy’s Road Malvern WR14 1JJ email firstname.lastname@example.org United Kingdom web http:\\www.pulsar-pm.com ©PULSAR Process Measurement Limited 2010 Version 4.0 June 2010 M-800-0050-D Micro Master P U L S A R p o i n t 800-50 Micro Master Pump Switch Mechanically-activated, wide-angle switch designed for performance and reliability. INSTALLATION FIGURE A - Wiring Diagrams Determine the pumping range for the installation (see Figures B and C). Do not tether less than 8 cm (3 inches) from the pipe. APPLICATIONS The Micro Master pump switch provides automatic control of pumps in sump, sewage and non-potable water applications. The Micro Master pump switch is not sensitive to rotation and can be used in either calm or turbulent applications. The SPDT version can be wired to work in either pump up (Normally Closed) or pump down (Normally Open) applications. Tighten the strap around the discharge pipe keeping the switch cable between the strap and the pipe to prevent slippage. Space small ties at least 2.5 cm (1 inch) apart (see Figure D). To re-adjust ties, press small tie tabs down. To lock the releasable tab, run the remaining strap between the tab and the head. Pull tightly To eliminate any obstructions to the switch, tuck the strap back through the head (see Figure D). Wire switch as shown in Figure A. Check installation. Allow system to cycle to ensure proper operation. FIGURE B - Installation of MicroMaster Pump Switch OPTIONS ! WARNING ! ⇒ 3 m or 10 m cable ⇒ Pump up, Pump down or SPDT versions ⇒ with an adjustable mounting strap or with a cable weight. FEATURES ⇒ ELECTRICAL SHOCK HAZARD Disconnect power before installing or servicing this product. ⇒ Mechanically activated, snap action contacts. ⇒ Do not use this product as a mains isolating switch. ⇒ High impact, corrosion resistant, polypropylene float housing. ⇒ This product is not approved for use in Hazardous Areas ⇒ Adjustable pumping range of 20 to 91 cm (8 to 36 inches) ⇒ Includes standard mounting strap or cable weight ⇒ The SPDT version can be wired as pump up (NC) or pump down (NO) ⇒ For use in non-potable water and sewage applications ⇒ Two-year warranty. ⇒ CE Approved. ⇒ Failure to follow these precautions could result in serious injury or death. ⇒ Keep these instructions in a safe place after installation.
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