MYERS WHR Manuals

WHR/WHRH and WHRE WASTE HANDLING SUMP PUMPS Installation and Servicing Instructions for Myers WHR/WHRH and WHRE Submersible Sump Pumps Single & Three Phase Power Single & Double Seal 23833A201 (Rev. 6/09) SINGLE SEAL PUMPS DOUBLE SEAL PUMPS 23833A201 2 TYPICAL SECTIONAL DRAWINGS FOR WHR/WHRH AND WHRE SINGLE AND DOUBLE SEAL WASTE HANDLING PUMPS SINGLE SEAL FIG. 1 WHR WHRH WHRE DOUBLE SEAL FIG. 2 WHR-DS WHR-SD L/D WHRH-DS WHRH-DS L/D WHRE-DS WHRE-DS L/D GENERAL DESCRIPTION AND USES The WHR and WHRH Series are solids handling pumps that can be used to pump RAW SEWAGE for COMMERCIAL and DOMESTIC use, but are not intended to handle large rags, mop heads, or strings. All pumps can be used for normal sump duty where extra capacity is required. The WHRE Series is for pumping sump water and EFFLUENT from septic tanks only. DO NOT USE FOR RAW SEWAGE. RECESSED IMPELLERS All of the pumps are of the recessed impeller type that provides a clear volute passage for solids as no solids pass through the impeller. All of the pumps listed can be used to pump septic tank EFFLUENT or GROUND sewage as used in some pressure sewer systems. DOUBLE SEAL PUMPS All double seal models have two seals with an oil chamber between the seals so that seal faces of both lower and upper seals are oil lubricated for longer life and greater protection against water leaking into the motor windings. These double seal units are made with and without a seal leak probe. The leak probe in the oil seal chamber detects any water leakage into the chamber and turns on a red signal light in the control panel. Pumps should be removed from sump and seals replaced after seal light shows in the panel. Control panels must be used for pumps having the seal leak probe. Double seal pumps without the seal leak probe, should be pulled and seal leak checked in 12 to 18 months. LEVEL CONTROLS All pumps must use sealed level control switches for automatic operation. MLC and MFLC controls have sealed mercury* switches that are 1 H.P. rated at 230 volts. ALC and AWS-1 controls have sealed mechanical switches that are rated 2 H.P. at 230 volts. Simplex single phase pumps can be made automatic by attaching MFLC or MLC controls to pump. These switches have a fixed draw off level of 8 to 10” and can be used up to 1 H.P. For higher H.P. ratings two mercury* switch (or SMNO) controls with a magnetic starter can be used. The ALC and AWS-1 controls can be used for simplex single phase pumps with ratings up to 2 H.P. 3 23833A201 Plug in cords can be used on all the single phase pumps without seal leak detector. The cord has a GROUND pin that plugs into a grounded receptacle. The grounded receptacle cannot be used in the wet sump or basin due to DANGER of current leakage. Sealed junction boxes must be used in wet sumps or basins to make connections to motor cord. The AWS-1 control also acts as a sealed junction box for connecting power cord to pump cord. SAFETY WARNING All pumps single or three phase must have a GROUND WIRE that is connected to a screw in the metal pump housing. This wire goes to the control box and is connected to a good outside GROUND such as a metal water pipe or GROUND STAKE driven at least 6 feet into the ground. MOTOR TYPES All single phase pump motors are of the permanent split capacitor type that do not require a start switch or start relay. Automatic reset overload switches are attached directly to the motor windings. Three phase pump motors require a magnetic starter with 3 leg overload protection. INSTALLATION Pumps can be installed inside sealed basin with proper venting for either simplex or duplex systems. SIMPLEX or DUPLEX basin systems are available. See Figs. 3 and 4. It is not recommended that basins be used for RAW SEWAGE inside the home, but are for use in office buildings and small industrial buildings and factories. *This product contains mercury and must be disposed of according to local and federal codes.