BLACKMER GNX2A Installation, Operation And Maintenance Instructions

BLACKMER POWER PUMPS
INSTALLATION OPERATION AND MAINTENANCE INSTRUCTIONS
MODELS: GNX(H)2A, GNX(H)2.5A, GNX(H)3A, GNX(H)4A

TABLE OF CONTENTS

PUMP DATA
Technical Data .................................................... 2
Initial Pump Start Up Information ........................ 2
INSTALLATION
Pre-Installation Cleaning ..................................... 3
Location and Piping ............................................. 3
Mounting ............................................................. 3
Coupling Alignment ............................................. 4
Motor Coupling Installation..............................4
Gear Reducer Alignment - GNX(H) Models ....... 4
Pump Rotation .................................................... 6
To Change Pump Rotation .................................. 6
Check Valves ...................................................... 6
OPERATION
Pre-Start Up Check List ...................................... 7
Start Up Procedures ............................................ 8
Running the Pump in Reverse Rotation .............. 9
Flushing the Pump .............................................. 9
Pump Relief Valve ............................................... 9
Relief Valve Setting and Adjustment ................... 9
PUMP MAINTENANCE
Pump Lubrication ................................................. 10
Strainers............................................................... 11
Vane Replacement .............................................. 11
Pump Disassembly .............................................. 11
Parts Replacement .............................................. 11
Pump Assembly ................................................... 12
GEAR REDUCER MAINTENANCE ............................ 14
PUMP TROUBLE SHOOTING .................................... 16
GEAR REDUCER TROUBLE SHOOTING ................. 17
NOTE: Numbers in parentheses following individual parts
indicate reference numbers on Blackmer Parts Lists.
Blackmer pump manuals and parts lists may be obtained
from Blackmer's website (www.blackmer.com) or by
contacting Blackmer Customer Service.
PUMP PUMP PARTS LIST
MODEL 2" 2.5"
GNX(H) 101-C01 101-C02
Page
3" 4"
101-C03 101-C04
961224
INSTRUCTIONS NO. 101-C00
SAFETY DATA
This is a SAFETY ALERT SYMBOL.
When you see this symbol on the product, or in the
manual, look for one of the following signal words and be
alert to the potential for personal injury, death or major
property damage
Warns of hazards that WILL cause serious personal injury,
death or major property damage.
Warns of hazards that CAN cause serious personal injury,
death or major property damage.
Warns of hazards that CAN cause personal injury
or property damage.
NOTICE:
Indicates special instructions which are very
important and must be followed.
NOTICE:
Blackmer Pumps MUST only be installed in systems, which
have been designed by qualified engineering personnel.
The system MUST conform to all applicable local and
national regulations and safety standards.
This manual is intended to assist in the installation and
operation of the Blackmer power pumps, and MUST be kept
with the pump.
Pump service shall be performed by qualified technicians
ONLY. Service shall conform to all applicable local and
national regulations and safety standards.
Thoroughly review this manual, all instructions and hazard
warnings, BEFORE performing any work on the pump.
Maintain ALL system and pump operation and hazard
warning decals.
Section 101
Effective Mar 2019
Replaces Oct 2018